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Artykuły w czasopismach na temat „Structural properties of al4c3 powder”

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Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

MOHAMMAD SHARIFI, E., M. H. ENAYATI, and F. KARIMZADEH. "FABRICATION AND CHARACTERIZATION OF AL-AL4C3 NANOCOMPOSITE BY MECHANICAL ALLOYING." International Journal of Modern Physics: Conference Series 05 (January 2012): 480–87. http://dx.doi.org/10.1142/s2010194512002371.

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Aluminum carbide ( Al 4 C 3) seems to be an ideal reinforcement for producing aluminum matrix composites. Al 4 C 3 has high hardness and shear strength as well as a high melting point. The dispersion of Al 4 C 3 particles in the matrix produces a pinning effect that reduces aluminum grain growth, which improves the mechanical properties. In this study, aluminum powders were mixed with 4.5 wt.% graphite and mechanically alloyed using a high-energy ball mill in order to produce Al - Al 4 C 3 nanocomposite. The structural evaluation of powder particles after different milling times was studied by
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Li, Fei, Yiming Jiang, Gaoyang Mi, Mingyang Zhang, and Chunming Wang. "Microstructure Evolution and Mechanical Properties of 20%SiCp/Al Joint Prepared via Laser Welding." Materials 15, no. 17 (2022): 6046. http://dx.doi.org/10.3390/ma15176046.

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SiC particles-reinforced Al matrix composites (SiCp/AMCs) have been widely used in the aerospace structural components. In this work, 20 vol% SiCp/2A14 joint was fabricated by laser welding technology. The effects of different laser power/welding velocity on the 20 vol% SiCp/2A14 joint forming, microstructure evolution and mechanical properties were studied in detail. The results showed that, under the same heat input, the high power/high welding velocity was beneficial to reduce the porosity of SiCp/2A14 joint and inhibited the formation of brittle phase of Al4C3. At 8 kW-133 mm/s welding par
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Luo, Shixuan, Ruifeng Li, Peiyuan He, Hangyu Yue, and Jiayang Gu. "Investigation on the Microstructure and Mechanical Properties of CNTs-AlSi10Mg Composites Fabricated by Selective Laser Melting." Materials 14, no. 4 (2021): 838. http://dx.doi.org/10.3390/ma14040838.

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CNT-AlSi10Mg composites fabricated by SLM have drawn a lot attention in structural application due to its excellent strength, elasticity and thermal conductivities. A planetary ball milling method was used to prepare the carbon nanotube (CNT)-AlSi10Mg powders, and the CNT-AlSi10Mg composites were fabricated by selective laser melting (SLM). The density, microstructure and mechanical properties of CNT-AlSi10Mg composites were studied. The density of the test samples increased at first and then decreased with increasing scan speed. When the laser scan speed was 800 mm/s, the test sample exhibite
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4

Evdokimov, I. A., R. R. Khayrullin, R. Kh Bagramov, et al. "Nanostructured strain hardened aluminum-magnesium alloys modified by C60 fullerene obtained by powder metallurgy. Part 1. Effect of magnesium concentration on the structure and phase composition of powders." Izvestiya vuzov. Poroshkovaya metallurgiya i funktsional’nye pokrytiya, no. 3 (November 16, 2020): 76–84. http://dx.doi.org/10.17073/1997-308x-2020-3-76-84.

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This paper provides the first part of the study on the magnesium effect on the structural phase composition, physical and mechanical properties of nanostructured aluminum-magnesium composite materials with the composition AlxMgy + 0.3 wt.% C60 fullerene. Composite powders were obtained by the simultaneous mechanical activation of initial materials in a planetary ball mill in an argon atmosphere. It was found that the obtained powders have a complex hierarchical structure made up of 50–200 μm aggregates consisting of 5–10 μm strong high-density agglomerates, which in turn are a combination of n
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Wei, Jun Cong, Xiu Mei Ji, Jian Kun Huang, Chun Hui Gao, and Jun Bo Tu. "Effects of Sodium Salt on Hot Mechanical Properties and Microstructure of MgO-Al-C Bricks." Advanced Materials Research 690-693 (May 2013): 662–65. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.662.

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The effects of addition of silicon powder (1 wt. %) and Na2CO3 (converting to additional 0.5%, 1% Na2O) on the hot modulus of rupture (HMOR) of MgO-Al-C bricks were investigated. MgO-Al-C refractories were prepared by using fused magnesia and graphite flake as main starting materials, and Si, Na2CO3 or both as additives. Its phase composition and microstructure were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and EDS. The results showed that the HMOR of MgO-Al-C bricks increased slightly with addition of Si powder. However, the HMOR decreased when adding Na2CO
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6

Balog, Martin, Roman Florek, Martin Nosko, and František Šimančík. "Self-Propagating Synthesis of Ti-Al-C Powder Mixtures." Key Engineering Materials 520 (August 2012): 347–52. http://dx.doi.org/10.4028/www.scientific.net/kem.520.347.

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Self-propagating synthesis of Ti-Al-C powder mixture was used for fabrication of master alloys suited to industrial scale manufacturing of Al-TiC composites. The cold compacted powder pellets were heated in a protective atmosphere until the melting point of aluminium. Then the temperature of pellets increased rapidly due to intense exothermic reaction between molten Al and Ti, resulting in simultaneous formation of Al3Ti and Al4C3. When the temperature exceeded ~1090°C, TiC particles started to form as a result of the mutual reaction between Al3Ti and Al4C3. Resulting reaction products consist
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7

Ji, Xinghua, Cheng Zhang, and Shufeng Li. "In Situ Synthesis of Core-Shell-Structured SiCp Reinforcements in Aluminium Matrix Composites by Powder Metallurgy." Metals 11, no. 8 (2021): 1201. http://dx.doi.org/10.3390/met11081201.

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SiCp reinforced aluminium matrix composites (AMCs), which are widely used in the aerospace, automotive, and electronic packaging fields along with others, are usually prepared by ex situ techniques. However, interfacial contamination and poor wettability of the ex situ techniques make further improvement in their comprehensive performance difficult. In this paper, SiCp reinforced AMCs with theoretical volume fractions of 15%, 20%, and 30% are prepared by powder metallurgy and in situ reaction via an Al-Si-C system. Moreover, a combined method of external addition and an in situ method is used
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8

Besterci, Michal, and Katarína Sülleiová. "THEORETICAL-EXPERIMENTAL POSSIBILLITIES OF MICROSTRUCTURE QUANTIFICATION OF DISPERSION STRENGTHENED MATERIALS." Acta Metallurgica Slovaca 25, no. 1 (2021): 65–72. http://dx.doi.org/10.36547/ams.25.1.9.

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The present paper is devoted to the possibilities to classify the spatial arrangement of the elements (features) of a stochastic process with geometrical objects. The fundamental quantities describing point processes were introduced. Experimental possibilities of structural objects determination, possibilities of evaluation of the size distribution of the secondary phases, testing of planar point structures (estimation of the process intensity, square method and characteristics of the second order) were estimated. Interparticle distances, namely mean interparticle distance, mean minimum distan
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9

Besterci, Michal, Katarína Sülleiová, and Oksana Velgosová. "Kinetics of Mechanical Alloying, Mechanical Properties of Micro and Nanostructural Al-C Systems." High Temperature Materials and Processes 31, no. 4-5 (2012): 359–69. http://dx.doi.org/10.1515/htmp-2012-0068.

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AbstractA method of mechanical alloying process is described. Carbon transformation to Al4C3 is characterized within the different heat treatment schedules and nine commercial carbon powders are tested. The micromechanism of carbon incorporation into the metallic powder, and its compacting are described. The influence of dispersed carbides on mechanical properties is evaluated together with the influence of deformation on microstructure and properties. It was proved that the transformation efficiency of carbon to Al4C3 by heat treatment of aluminium with the porous furnace black and electrogra
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10

Simon, A., D. Lipusz, P. Baumli, et al. "Microstructure And Mechanical Properties Of Al-WC Composites." Archives of Metallurgy and Materials 60, no. 2 (2015): 1517–21. http://dx.doi.org/10.1515/amm-2015-0164.

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Abstract The scope of the research work is the production and characterization of Al matrix composites reinforced with WC ceramic nanoparticles. The synthesis process was powder metallurgy. The produced composites were examined as far as their microstructure and mechanical properties (resistance to wear, micro/macrohardness). Intermetallic phases (Al12W and Al2Cu) were identified in the microstrucutre. Al4C3 was not detected in the composites. Adding more than 5 wt% WC to the aluminum, microhardness and wear resistance exceed the values of Al alloy. Composites having weak interface bond perfor
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11

Kolev, Mihail, Rumyana Lazarova, Veselin Petkov, Yana Mourdjeva, and Diana Nihtianova. "Investigating the Effects of Graphene Nanoplatelets and Al4C3 on the Tribological Performance of Aluminum-Based Nanocomposites." Metals 13, no. 5 (2023): 943. http://dx.doi.org/10.3390/met13050943.

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The study investigates the effects of graphene nanoplatelets (GNPs) on the tribological properties of aluminum-based nanocomposites, both annealed after extrusion and non-annealed. It also examines the role of nanosized Al4C3 (aluminum carbide), which forms in the annealed Al/GNPs nanocomposite, on the tribological performance of the nanocomposites. The nanocomposites were fabricated using the powder metallurgy method. The microstructure of the composite materials was characterized using SEM, EDS, XRD and TEM techniques. The coefficient of friction (CF) and mass wear of the composites were mea
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12

Ni, Yuanlin, and Ruiying Luo. "Microstructure and Mechanical Properties of Carbon/Carbon Composites Infiltrated with Ti–6Al–4V Titanium Alloy." Crystals 10, no. 1 (2020): 29. http://dx.doi.org/10.3390/cryst10010029.

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In this work, chemical vapor infiltration (CVI) was combined with reactive melt infiltration (RMI) using Ti–6Al–4V titanium alloy powder to prepare Cf/C–TiC composites. The microstructure and composition of Cf/C–TiC composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The flexural properties of the composites were also analyzed. The results indicated that the Ti–6Al–4V titanium alloy infiltrated the Cf/C preform and reacted with the pyrolytic carbon (PyC) to form a TiC–VC and Al4C3 matrix, and no residual Ti, Al, or V was detected. Moreover, Al4C3 wa
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13

Rudianto, H., C. Edtmaier, I. Dlouhy, and F. Soukal. "Effect of Ultrasonication Dispersion Technique on Sintering Properties of CNT Reinforced Al-Zn-Mg-Cu Powder." Archives of Metallurgy and Materials 62, no. 2 (2017): 1131–35. http://dx.doi.org/10.1515/amm-2017-0165.

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Abstract CNT has been researched significantly due to its properties especially mechanical and conductivity properties. Due to strong affinity between particles, dispersion has been remained a problem for its applications. Ultrasonication technique was used to disperse CNT on aluminum powder. Ultrasonication has successfully dispersed CNT on aluminum powder in ethanol. Low energy ball milling for 1h under argon gas with 5:1 ball to powder ratio was used to optimize dispersion of CNT on aluminum. CNT concentration in this research is ranged from 0.1 up to 3wt%. Premix Al-5.5Zn-2.5Mg-0.5Cu powde
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14

Xie, Xin Liang, Ying Chun Xie, Zhan Qiu Tan, et al. "Additive Manufacturing of a CNT/Al6Si Composite with the Nanolaminated Architecture via Cold Spray Deposition." Materials Science Forum 941 (December 2018): 2173–77. http://dx.doi.org/10.4028/www.scientific.net/msf.941.2173.

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Cold spraying (CS) is a solid-state layer-by-layer deposition technique, allowing to fabricate complex-shaped metallic components, such as metal matrix composites (MMCs). It has been demonstrated that introduction of a nacre-like nanolaminated architecture in man-made MMCs can perfectly beat the conflict between strength and ductility (toughness). In this work, the fully dense carbon nanotubes (CNTs) reinforced Al6Si (hereafter called CNT/Al6Si) MMC with the nanolaminated architecture is successfully realized by flake powder metallurgy followed by CS. It is revealed that the nanolaminated arch
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15

Dobeš, Ferdinand, and Petr Dymáček. "Estimation of Anisotropy of Creep Properties in Al and Mg Alloys by Means of Small Punch Test." Key Engineering Materials 734 (April 2017): 137–43. http://dx.doi.org/10.4028/www.scientific.net/kem.734.137.

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Small punch test was used to evaluate the properties of light alloys in various directions. Three different materials were studied: (i) magnesium alloy WE54 prepared by a powder metallurgical route with final hot extrusion, (ii) aluminium alloy reinforced with 20 vol. % of Saffil fibres with planar orientation, and (iii) Al-Al4C3 composite prepared by mechanical alloying and subjected to equal channel angular pressing as a final step. Tests were performed under constant force at elevated temperatures. The observed orientation dependence of creep properties is strongly material dependent. The r
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16

Lazarova, Rumyana, Lubomir Anestiev, Yana Mourdjeva, Kateryna Valuiska, and Veselin Petkov. "Microstructural Evolution, Strengthening Mechanisms, and Fracture Behavior of Aluminum Composites Reinforced with Graphene Nanoplatelets and In Situ–Formed Nano-Carbides." Metals 15, no. 3 (2025): 285. https://doi.org/10.3390/met15030285.

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The microstructure and mechanical properties of GNP-reinforced aluminum composites obtained by powder metallurgy and hot extrusion (at 400 °C, 500 °C, and annealing at 3 h at 610 °C), were investigated. It was found that: (i) depending on the processing applied, the composites showed an increase in yield strength (YS) and ultimate strength (US) of up to 283%, and 78%, respectively; (ii) depending on the size of the ex situ GNP and in situ Al4C3 reinforcements, two fracture mechanisms are observed: ductile and brittle–ductile; (iii) annealing for 3 h at 610 °C did not improve the mechanical pro
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17

Zhang, Hai Ping, Wen Long Xiao, Kei Ameyama, Guo Fu Ji, Ming Juan Yang, and Chao Li Ma. "Enhanced Tensile Properties of Graphene-Al5083 Composite Prepared by Hot Pressing and Hot Extrusion." Materials Science Forum 849 (March 2016): 424–29. http://dx.doi.org/10.4028/www.scientific.net/msf.849.424.

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Graphene, with outstanding mechanical properties of 1TPa of Young’s modulus and 130GPa of tensile strength, has been considered as an excellent reinforcement in composites. Graphene nanoplates (GNP) reinforced Al5083 alloy composites were successfully fabricated by powder metallurgy method. Flake-like Al5083 powder was firstly added into a GNP-alcohol solution and then dried in vacuum oven at 343 K for 5 h. The composite powders were sintered at 723K under pressure of 300 MPa for 1 h, followed by extrusion at 623 K. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission e
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18

Kolev, Mihail, Rumyana Lazarova, Veselin Petkov, and Rositza Dimitrova. "Effects of Graphene Nanoplatelets and Nanosized Al4C3 Formation on the Wear Properties of Hot Extruded Al-Based Nanocomposites." Lubricants 13, no. 2 (2025): 67. https://doi.org/10.3390/lubricants13020067.

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This study investigates the influence of graphene nanoplatelets (GNPs) and the formation of nanosized Al4C3 on the tribological performance of hot extruded aluminum-based nanocomposites. Al/GNP nanocomposites with varying GNP contents (0, 0.1, 0.5, and 1.1 wt.%) were fabricated through powder metallurgy, including ball milling, compaction, and hot extrusion at 500 °C, which was designed to facilitate the formation of nanosized carbides during the extrusion process. The effect of GNPs and nanosized carbides on the tribological properties of the composites was evaluated using dry friction pin-on
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Shrivastava, Pankaj, Syed Nasimul Alam, Taraknath Maity, and Krishanu Biswas. "Effect of graphite nanoplatelets on spark plasma sintered and conventionally sintered aluminum-based nanocomposites developed by powder metallurgy." Materials Science-Poland 39, no. 3 (2021): 346–70. http://dx.doi.org/10.2478/msp-2021-0029.

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Abstract In this work, aluminum (Al)-based nanocomposites reinforced with graphite nanoplatelets (GnPs) have been fabricated by conventional sintering as well as spark plasma sintering (SPS) techniques, and their microstructure and mechanical properties have been studied. The powder metallurgy (PM) route has been adopted to fabricate the various Al–GnP nanocomposites. Characterization of the powder mixtures and the nanocomposites has been carried out through different characterization techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission
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Pan, Jun Ling, Qiu Ming Peng, Jian Xin Guo, and Hui Li. "Grain Refining Behavior of Zr, Al2Y and Al4C3 Particles in Magnesium Alloys by the First-Principles Calculations." Materials Science Forum 816 (April 2015): 370–74. http://dx.doi.org/10.4028/www.scientific.net/msf.816.370.

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Grain refining is one of the most important issues in the applications of Mg alloys, which directly determines mechanical properties and deformability. Therefore the understanding of grain refining mechanism during solidification will be benefit to develop new grain refiners. Herein refining role was elucidated by the first principles calculations based on adsorption behavior of a Mg atom on the closest-packed planes of grain refiners (Zr (001), Al2Y(311) and Al4C3(102)). Taking into account different sites, the site with the maximum adsorption energy value generally corresponded to the most p
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Carpenter, R. W., W. Braue, and R. A. Cutler. "Liquid-Phase reaction zones in wurtzite SiC alloys." Proceedings, annual meeting, Electron Microscopy Society of America 45 (August 1987): 306–7. http://dx.doi.org/10.1017/s0424820100126354.

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A relatively new method for densification of SiC compacts to produce high strength structural ceramics involves solid solution formation between wurtzite structure type α(2H)SiC and Al2OC or AIN. The solid solutions have the wurtzite structure and extend from 2 to 100 mol. % of the Al compounds. It is also known that Al2O3, and Al4C3 form a eutectic near 2150K. In the present work analytical methods were used to examine the solid/liquid reaction path followed by a powder compact of compositionxSiC+y(Al2O3+A14C3)= xSiC.3yAl2OC,where x=l and y=0.02, heat treated in nitrogen atmosphere near the e
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Nurguzhin, Marat, Marat Janikeyev, Myrzakhan Omarbayev, et al. "Structure and Properties of Al–CNT-Based Composites Manufactured by Different Methods: A Brief Review." Materials 18, no. 1 (2025): 214. https://doi.org/10.3390/ma18010214.

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Aluminum–carbon nanotube (Al–CNT) composites represent a cutting-edge class of materials characterized by their exceptional mechanical, thermal, and electrical properties, making them highly promising for aerospace, automotive, electronics, and energy applications. This review systematically examines the impact of various fabrication methods, including conventional powder metallurgy, diffusion and reaction coupling, as well as adhesive and reaction bonding on the microstructure and performance of Al–CNT composites. The analysis emphasizes the critical role of CNT dispersion, interfacial bondin
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23

Rumyana Lazarova. "Microstructural Explanation of the Mechanical Properties of Al – GNPs Composites with Al4C3 Produced by Powder Metallurgy Method and Extrusion." Journal of Information Systems Engineering and Management 10, no. 43s (2025): 900–909. https://doi.org/10.52783/jisem.v10i43s.8495.

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The microstructure of aluminum-based composites with graphene reinforcement in the range of 0.1 to 1.1 wt. %, obtained by powder metallurgy and extrusion, has been characterized. The first series of composites was produced by extrusion at a temperature of 500 °C, at which in situ aluminum nanoscale carbides were formed, and the second by extrusion at 400 °C and subsequent annealing at 610 °C for three hours, at which nano- and microscale carbides were formed. The methods used for investigation are mechanical testing, optical microscopy, SEM and TEM. The mechanical properties and failure mechan
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24

Moriyasu, H., J. Kita, H. Suemasu, Ian J. Davies, S. Koda, and K. Itatani. "Effect of Surface-Modified Si-Al-C® Fibre Addition on the Mechanical Properties of Silicon Carbide Composite." Advances in Science and Technology 71 (October 2010): 127–32. http://dx.doi.org/10.4028/www.scientific.net/ast.71.127.

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The effect of surface modified Si-Al-C® fibre with carbon interface (SA/C fibre) addition on the densification of silicon carbide (SiC) composite was examined. An acid treatment (H2SO4 and HNO3) was carried out at 50°C for 3 h in order to add COO- group to the surface of SA/C fibre and to enhance the dispersibility of SA/C fibre in the SiC powder due to the mixing operation in the polar solvent. Commercially available ultrafine SiC powder (specific surface area: 47.5 m2∙g-1) was mixed with acid-treated SA/C fibre and sintering aid (4.8 mass% Al4C3 and 1.2 mass% B4C) in the presence of acetone.
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Ivanov, D. A., S. D. Shlyapin, and G. E. Valiano. "Mechanism of destruction of the Al–Al4C3–Al2O3 alumo-matrix dispersion-hardened composite material with a layered structure on static and shock loading." Izvestiya vuzov. Poroshkovaya metallurgiya i funktsional’nye pokrytiya, no. 4 (December 15, 2020): 66–75. http://dx.doi.org/10.17073/1997-308x-2020-4-66-75.

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Alumo-matrix dispersion-hardened composite materials are widely used in engineering due to the combination of high strength and low density, allowing the production of lightweight endurable structural elements for various purposes. They are used for manufacturing abrasive, triboengineering products, parts of the internal combustion engine cylinder-piston group, airframe and other special products. The paper is aimed to study the fracture mechanism of a layered dispersion-hardened Al–Al2O3–Al4C3 composite on static loading and impact. Specimens were obtained by liquid phase sintering of PAP-2 p
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Kozieł, J., L. Błaż, G. Włoch, J. Sobota, and P. Lobry. "Precipitation Processes during Non-Isothermal Ageing of Fine-Grained 2024 Alloy." Archives of Metallurgy and Materials 61, no. 1 (2016): 169–76. http://dx.doi.org/10.1515/amm-2016-0030.

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Mechanical alloying and powder metallurgy procedures were used to manufacture very fine-grained bulk material made from chips of the 2024 aluminum alloy. Studies of solution treatment and precipitation hardening of as-received material were based on differential scanning calorimetry (DSC) tests and TEM/STEM/EDX structural observations. Structural observations complemented by literature data lead to the conclusion that in the case of highly refined structure of commercial 2024 alloys prepared by severe plastic deformation, typical multi-step G-P-B →θ” →θ’ →θ precipitation mechanism accompanied
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Jayaseelan, Joel, Ashwath Pazhani, Anthony Xavior Michael, Jeyapandiarajan Paulchamy, Andre Batako, and Prashantha Kumar Hosamane Guruswamy. "Characterization Studies on Graphene-Aluminium Nano Composites for Aerospace Launch Vehicle External Fuel Tank Structural Application." Materials 15, no. 17 (2022): 5907. http://dx.doi.org/10.3390/ma15175907.

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From the aspect of exploring the alternative lightweight composite material for the aerospace launch vehicle external fuel tank structural components, the current research work studies three different grades of Aluminium alloy reinforced with varying graphene weight percentages that are processed through powder metallurgy (P/M) route. The prepared green compacts composite ingots are subjected to microwave processing (Sintering), hot extruded, and solution treated (T6). The developed Nano-graphene reinforced composite is studied further for the strength–microstructural integrity. The nature of
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Fukuda, Koichiro, Miyuki Hisamura, Yusuke Kawamoto, and Tomoyuki Iwata. "Synthesis, crystal structure, and thermoelectric properties of a new layered carbide (ZrC)3[Al3.56Si0.44]C3." Journal of Materials Research 22, no. 10 (2007): 2888–94. http://dx.doi.org/10.1557/jmr.2007.0372.

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A new quaternary layered carbide, (ZrC)3[Al3.56Si0.44]C3, has been synthesized and characterized by x-ray powder diffraction and thermopower and electrical conductivity measurements. The crystal structure was successfully determined using direct methods and further refined by the Rietveld method. The crystal is trigonal (space group R3m*, Z = 3) with lattice dimensions a = 0.331389(7), c = 4.90084(7) nm, and V = 0.46610(1) nm3. The final reliability indices calculated from the Rietveld refinement were Rwp = 9.53% (S = 1.70), Rp = 7.22%, RB = 1.81%, and RF = 0.94%. The crystal structure is comp
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Thongsamrit, Wannisa, Thanida Charoensuk, Panissa Saetang, Pongsakorn Jantaratana, Chesta Ruttanapun, and Chitnarong Sirisathitkul. "Effects of Carbon Doping and Annealing Temperature on Magnetic MnAl Powders and MnAl Polymeric Composites." Applied Sciences 11, no. 5 (2021): 2067. http://dx.doi.org/10.3390/app11052067.

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Process parameters leading to magnetic polymer composites, an essential ingredient in the additive manufacturing of rare-earth-free magnets, are investigated. The induction melting of manganese (Mn) and aluminum (Al), and subsequent annealing at 450, 500, or 550 °C for 20 min, gave rise to ferromagnetic τ–MnAl phase, as well as other phases. The nonmagnetic Al4C3 and oxide phases were then removed by the magnetic separation. Magnetic powders from the magnetic separation were incorporated in polylactic acid (PLA) matrix via a solution route. The remanent magnetization as high as 4.3 emu/g in th
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Seretis, Georgios V., Georgios Kouzilos, Aikaterini K. Polyzou, Dimitrios E. Manolakos, and Christopher G. Provatidis. "Effect of Graphene Nanoplatelets Fillers on Mechanical Properties and Microstructure of Cast Aluminum Matrix Composites." Nano Hybrids and Composites 15 (May 2017): 26–35. http://dx.doi.org/10.4028/www.scientific.net/nhc.15.26.

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Recently, many studies on the production of graphite/graphene reinforced aluminum-matrix composites using different fabrication methods, such as powder or semi-powder method, have been performed. However, cast aluminum/graphite or aluminum/graphene composites have not been widely investigated and the research on this production method mainly focuses on 3D graphite particle reinforcements. In this study, the use of a 2D graphene structure, i.e. graphene nanoplatelets (GNPs), in the production of cast Al/GNP composites is investigated. Graphene nanoplatelets reinforced cast aluminum matrix compo
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31

Singh, Raj Bahadur, Sanjeev Kumar, and Khemraj Sahu. "Development of Graphitic 2024 Al Alloy by Mechanical Alloying." Key Engineering Materials 962 (October 12, 2023): 3–10. http://dx.doi.org/10.4028/p-o43vbb.

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In this study, the 2024 Al powder with different weight fractions of graphite is mechanically milled using a high-energy ball mill for 3 hours each in the nitrogen environment. The milled powder is compacted at an elevated temperature. X-ray diffraction is used to phase analysis of milled powder as well as compacted specimens. Optical microscopy is used for microstructural analysis and hardness measurements are done for the evaluation of mechanical properties. The hot compacted specimens are also tested for their wear properties. Results show that there is no new phase formed during mechanical
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32

Sun, Liang, Yimin Gao, Katsumi Yoshida, Toyohiko Yano, and Wen Wang. "Prediction on structural, mechanical and thermal properties of Al4SiC4, Al4C3 and 4H-SiC under high pressure by first-principles calculation." Modern Physics Letters B 31, no. 09 (2017): 1750080. http://dx.doi.org/10.1142/s0217984917500804.

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A theoretical study is conducted by first-principles theory to study the structural, electronic, elastic and thermal properties of Al4SiC4, Al4C3 and 4H-SiC phases under pressure. The calculated results indicated that the volumetric shrinkage of Al4SiC4 declines to 16% compared with 4H-SiC for 12% and its length of lattice parameter along c-axis decreases faster than that of along other axes in cell structures. The mechanical properties of Al4SiC4 like elastic constants and elastic moduli increase continuously under pressure. The thermal expansion coefficient of three compounds under pressure
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33

Sirelkhatim, Amna Hassan, Shahrom Mahmud, Seeni Azman, et al. "Structural, Optical and Antibacterial Properties of ZnO Commercial Powder Grades." Advanced Materials Research 795 (September 2013): 19–23. http://dx.doi.org/10.4028/www.scientific.net/amr.795.19.

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We investigated the structural, optoelectronic and antibacterial properties of two commercial ZnO powder namely White (rubber grade) and Pharma (pharmaceutical grade) in order to study the correlation between the structural-optical property and the antibacterial efficacy. Transmission electron microscopy (TEM) micrographs showed rod-like morphology for the Pharma specimen and grainular shape for the White sample. X-ray diffractometry (XRD) results confirmed the superior crystallinity of the Pharma powder and photoluminescence (PL) data also showed higher UV photocatalysis of the Pharma powder
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34

Kuppan, M., S. Kaleemulla, N. Madhusudhana Rao, N. Sai Krishna, M. Rigana Begam, and M. Shobana. "Structural and Magnetic Properties of Ni DopedSnO2." Advances in Condensed Matter Physics 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/284237.

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Nickel (Ni) doped SnO2powder samples were prepared using solid-state reaction with dopant concentrations in the range of 3 at.% to 15 at.%. The influence of Ni doping on structural, optical, and magnetic properties of the powder samples has been investigated. All the Ni doped powder samples exhibited tetragonal structure of SnO2. A decrease in optical band gap was observed with increase of Ni doping levels. The vibrating sample magnetometer measurements revealed that the Ni doped SnO2powder samples were ferromagnetic at room temperature.
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35

Deev, I. S., I. I. Sokolov, N. N. Panina, et al. "Properties and structural features of nanodisperse powder fillers." Polymer Science Series D 6, no. 4 (2013): 285–90. http://dx.doi.org/10.1134/s1995421213030179.

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Rao, K. Srinivasa, and S. Buddhudu. "Structural, Thermal and Dielectric Properties of BiNbO4Ceramic Powder." Ferroelectrics Letters Section 37, no. 6 (2010): 101–9. http://dx.doi.org/10.1080/07315171.2010.527806.

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37

Loudjani, N., N. Bensebaa, L. Dekhil, S. Alleg, and J. J. Suñol. "Structural and magnetic properties of Co50Ni50 powder mixtures." Journal of Magnetism and Magnetic Materials 323, no. 23 (2011): 3063–70. http://dx.doi.org/10.1016/j.jmmm.2011.06.059.

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38

Pisareva, T. A., E. V. Kharanzhevskiy, and S. M. Reshetnikov. "Electrical capacity of Al – C nanocomposites obtained by mechanical activation and short-pulse laser processing of powder materials." Physics and chemistry of Materials treatment 1 (2025): 5–17. https://doi.org/10.30791/0015-3214-2025-1-5-17.

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The work investigates the possibility of obtaining the electrode material of supercondensers by mechanactivation and short-income laser processing of the Al – C system. After mechanical grinding, the obtained powder materials were subjected to short-pulse laser treatment on the surface of the substrate — aluminum foil. An increase in the concentration of graphite in the Al – C composite does not lead to an increase in specific capacity, which is associated with the content of graphite-like carbon located on the surface of the electrode. The obtained electrodes based on nanocomposite have a hom
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LIU, Y. S., Q. L. HUANG, Q. L. FENG, N. M. HU, and O. ALBERT. "STRUCTURAL FEATURES AND MECHANICAL PROPERTIES OF PLLA/PEARL POWDER SCAFFOLDS." Journal of Mechanics in Medicine and Biology 13, no. 01 (2013): 1350020. http://dx.doi.org/10.1142/s0219519413500206.

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In order to improve the mechanical properties of scaffolds for bone tissue engineering, the present study aims to bring calcium carbonate (CaCO3) with signaling molecules, namely pearl powder, into poly(L-lactic acid) (PLLA). PLLA/aragonite and PLLA/vaterite scaffolds were successfully fabricated by the freeze-drying method. Both composite scaffolds had a similar porous structure but a different saturated content of pearl powders. For both scaffolds, the porosity decreases and yield strength increases as pearl powder content increases. Introducing pearl powders into PLLA can improve the mechan
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40

Alkan, Ümit, Yaşar Karabul, Ayşe Evrim Bulgurcuoğlu, Mehmet Kılıç, Zeynep Güven Özdemir, and Orhan İçelli. "Polypropylene/basalt thick film composites: structural, mechanical and dielectric properties." e-Polymers 17, no. 5 (2017): 417–25. http://dx.doi.org/10.1515/epoly-2017-0035.

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AbstractIn this work, polypropylene/volcanic basalt rock (PP/VBR) thick film composites with different VBR powder mass ratio varying from 0.5 wt.% to 20.0 wt.% were prepared by using the hot press technique. The effects of VBR powder doping on mechanical, structural and dielectric properties of PP were investigated by stress-strain measurements, Fourier transform infrared analysis, thermal gravimetric analysis, scanning electron microscopy and dielectric spectroscopy methods. The highest tensile strength, percentage strain and energy at break were achieved for 0.5 wt.% VBR powder doped PP comp
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41

Aynur Valeh Sharifova. "Features of manufacturing case of hydraulic cylinders of structural powder steel." World Journal of Advanced Research and Reviews 24, no. 3 (2024): 975–81. https://doi.org/10.30574/wjarr.2024.24.3.3734.

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This work examines the dependence of the structure and properties of iron-based powder materials used for body parts of hydraulic cylinders on their composition and manufacturing technology. The role and importance of powder structural materials in industrial areas, the features of the production of parts for hydraulic devices and the characteristic features of methods for strengthening parts made from these materials are also explored here. During the research, powder materials containing Fe-Cu and Fe-Cu-graphite were used to prepare the hydraulic cylinder body part. The influence of the dens
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42

Aynur, Valeh Sharifova. "Features of manufacturing case of hydraulic cylinders of structural powder steel." World Journal of Advanced Research and Reviews 24, no. 3 (2024): 975–81. https://doi.org/10.5281/zenodo.15187065.

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This work examines the dependence of the structure and properties of iron-based powder materials used for body parts of hydraulic cylinders on their composition and manufacturing technology. The role and importance of powder structural materials in industrial areas, the features of the production of parts for hydraulic devices and the characteristic features of methods for strengthening parts made from these materials are also explored here. During the research, powder materials containing Fe-Cu and Fe-Cu-graphite were used to prepare the hydraulic cylinder body part. The influence of the dens
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43

Wong-Ng, W., J. Guo, Y. Yan, and J. A. Kaduk. "Structural and thermoelectric properties of Pb4In2.6Bi3.4Se13." Powder Diffraction 36, no. 3 (2021): 151–58. http://dx.doi.org/10.1017/s0885715621000385.

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Quaternary selenide, Pb4In2.6Bi3.4Se13 (x = 2.4 member of the Pb4(InxBi6-xSe13 solid solution), was synthesized by a solid-state technique, and its structure was determined using powder X-ray diffraction (XRD). Pb4In2.6Bi3.4Se13 crystallizes in the orthorhombic space group Pbam (No. 55) with Z = 4. Lattice parameters and calculated density were determined to be a = 22.152(5) Å, b = 27.454(5) Å, and c = 4.1354(6) Å, V = 2515.0(11) Å3, and Dx = 7.490 g cm−3. The structure consists of Z-shaped ribbon units and corner-shared infinite one-dimensional [InSe4]∞ chains running parallel to the c-axis.
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Hong, Seong Min, Cheol Gi Kim, and Chong Oh Kim. "Magnetic and Structural Properties of Nitrified FINEMET Powder Using by Mechanical Milling Method." Materials Science Forum 558-559 (October 2007): 1313–16. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.1313.

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The magnetic and structural properties of FINEMET [Fe73.5Si13.5B9Nb3Cu1 wt %] amorphous powder were investigated after nitrification and mechanical milling. Fe-based amorphous powder were nitrified and crystallized simultaneously at 550°Cusing by ammonia(NH3) gas. Nitrified powder exhibited iron nitride phase such as γ′-Fe4N, Fe3N and α″-Fe16N2. Nitrified particles were more brittle than raw particles. As a result, nanometer sized nitride powder were fabricated by high energetic ball milling method. The saturation magnetization(Ms) and coercivity(Hc) of nitrified powder were increased due to n
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45

Hu, Jianian, Jian Zhang, Guoqiang Luo, Yi Sun, Qiang Shen, and Lianmeng Zhang. "Design and Synthesis of C-O Grain Boundary Strengthening of Al Composites." Nanomaterials 10, no. 3 (2020): 438. http://dx.doi.org/10.3390/nano10030438.

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This research presents an approach for C-O grain boundary strengthening of Al composites that used an in situ method to synthesize a C-O shell on Al powder particles in a vertical tube furnace. The C-O reinforced Al matrix composites (C-O/Al composites) were fabricated by a new powder metallurgy (PM) method associated with the hot pressing technique. The data indicates that Al4C3 was distributed within the Al matrix and an O-Al solution was distributed in the grain boundaries in the strengthened structure. The formation mechanism of this structure was explained by a combination of TEM observat
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Kumar, Lailesh, Syed Nasimul Alam, and Santosh Kumar Sahoo. "Mechanical properties, wear behavior and crystallographic texture of Al–multiwalled carbon nanotube composites developed by powder metallurgy route." Journal of Composite Materials 51, no. 8 (2016): 1099–117. http://dx.doi.org/10.1177/0021998316658946.

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Aluminum (Al)-based metal matrix composites reinforced with multiwalled carbon nanotubes were developed by powder metallurgy route. The Al and multiwalled carbon nanotubes powder mixtures were consolidated under a load of 565 MPa followed by sintering at 550℃ for 2 h in inert atmosphere. Al–1, 2, and 3 wt.% multiwalled carbon nanotube composites were developed. In the present study, the microstructure, mechanical properties, sliding wear behavior, and crystallographic texture of various Al–multiwalled carbon nanotube composites were investigated. The multiwalled carbon nanotubes produced by lo
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Ku, Harry, Peter Wong, J. Huang, H. Fung, and Mohan Trada. "Flexural Properties of Epoxy Composites Filled with Glass Powder: Preliminary Results." Advanced Materials Research 410 (November 2011): 309–12. http://dx.doi.org/10.4028/www.scientific.net/amr.410.309.

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Epoxy resin was filled with glass powder with a view to increasing strength of the composite for structural applications by a research Centre on composites, University of Southern Queensland (USQ). In order to reduce costs, the Centre wishes to fill as much glass powder as possible subject to maintaining sufficient strength of the composites in structural applications. This project varies the percentage by weight of the glass powder in the composites which are then subjected to flexural tests. The results show that composite with 25 % by weight of the glass powder produces the highest flexural
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Kostelanská, Klára, Barbora Blahová Prudilová, Sylva Holešová, Jakub Vlček, David Vetchý, and Jan Gajdziok. "Comparative Study of Powder Carriers Physical and Structural Properties." Pharmaceutics 14, no. 4 (2022): 818. http://dx.doi.org/10.3390/pharmaceutics14040818.

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High specific surface area (SSA), porous structure, and suitable technological characteristics (flow, compressibility) predetermine powder carriers to be used in pharmaceutical technology, especially in the formulation of liquisolid systems (LSS) and solid self-emulsifying delivery systems (s-SEDDS). Besides widely used microcrystalline cellulose, other promising materials include magnesium aluminometasilicates, mesoporous silicates, and silica aerogels. Clay minerals with laminar or fibrous internal structures also provide suitable properties for liquid drug incorporation. This work aimed at
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Kim, Soo Ho, Kwang Hoon Lee, Baek Seok Seong, Gyeung-Ho Kim, Jong Sung Kim, and Young Soo Yoon. "Synthesis and structural properties of lithium titanium oxide powder." Korean Journal of Chemical Engineering 23, no. 6 (2006): 961–64. http://dx.doi.org/10.1007/s11814-006-0015-1.

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Kandiah, Khishn Kumar, Amirul Syafiq Bin Abdul Jaafa, Vengadaesvaran Balakrishnan, et al. "Study on structural and luminescence properties of Eu-doped CBP phosphors." Journal of Polymer Science and Engineering 6, no. 1 (2023): 2939. http://dx.doi.org/10.24294/jpse.v6i1.2939.

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Europium (Eu) doped Calcium borophosphate (CBP) phosphors were synthesized via solid-state diffusion method. The prepared Europium (Eu) doped Calcium borophosphate (CBP) powder was heated up to 600 ℃ for 6 h for a complete diffusion of ions in the powder system. XRD results showed that the prepared phosphors exhibit a well-crystallized hexagonal phase. The complete diffusion inside the CBP/Eu powder system has been confirmed by the presence of elements such as P, O, Bi, Ca, C, Eu, and B. Apart from that, the synthesized powder system has shown a down-conversion property where the Eu3+ activate
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