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Journal articles on the topic 'Elemental powder'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Chen, Yitao, Xinchang Zhang, Mohammad Masud Parvez, and Frank Liou. "A Review on Metallic Alloys Fabrication Using Elemental Powder Blends by Laser Powder Directed Energy Deposition Process." Materials 13, no. 16 (2020): 3562. http://dx.doi.org/10.3390/ma13163562.

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The laser powder directed energy deposition process is a metal additive manufacturing technique, which can fabricate metal parts with high geometric and material flexibility. The unique feature of in-situ powder feeding makes it possible to customize the elemental composition using elemental powder mixture during the fabrication process. Thus, it can be potentially applied to synthesize industrial alloys with low cost, modify alloys with different powder mixtures, and design novel alloys with location-dependent properties using elemental powder blends as feedstocks. This paper provides an over

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2

Nadakuduru, Vijay, De Liang Zhang, Peng Cao, and Brian Gabbitas. "Thermomechanical Consolidation of Ti/Al/Cr Composite (Composition: Ti-47Al-2Cr (at %)) Powders." Materials Science Forum 618-619 (April 2009): 501–4. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.501.

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The present study aims to develop a process to make ultrafine grained (UFG) Ti-47Al-2Cr (at %) alloy using elemental Ti, Al and Cr powders. The process involves mechanical milling of a mixture of the elemental powders to produce a Ti/Al/Cr composite powder, compaction of the milled powder, and consolidation of the powder compact using hot isostatic pressing (HIP) or powder compact forging. This paper is to give an overview of microstructure and the mechanical properties of the alloy samples obtained using the above processing technique. Inhomogeneous microstructures with high amounts of (α2) T

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3

Wendhausen, Paulo A. P., Aline Silva, André L. Slaviero, and Ricardo Machado. "On the Use of Elemental Powders to Process Fe-50Co Alloys by Powder Injection Molding." Materials Science Forum 530-531 (November 2006): 230–35. http://dx.doi.org/10.4028/www.scientific.net/msf.530-531.230.

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Aiming to obtain components with higher density, this work evaluated the technical and economical viabilities to replace the pre-alloyed Fe49Co2V by an elemental powder alloy of iron and cobalt (Fe-50Co). Using an elemental alloy could increase the density of the final material due to the driving force created by the chemical gradient between the powders. The results showed that is possible to achieve higher densities in an elemental powder Fe-50Co alloy sinterized at the same temperature and in shorter times than the Fe49Co2V alloy. The analysis of economical viability showed that the replace

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4

Yan, Lei, Xueyang Chen, Wei Li, Joseph Newkirk, and Frank Liou. "Direct laser deposition of Ti-6Al-4V from elemental powder blends." Rapid Prototyping Journal 22, no. 5 (2016): 810–16. http://dx.doi.org/10.1108/rpj-10-2015-0140.

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Purpose This paper aims to achieve Ti-6Al-4V from Ti, Al and V elemental powder blends using direct laser deposition (DLD) and to understand the effects of laser transverse speed and laser power on the initial fabrication of deposit’s microstructure and Vickers hardness. Design/methodology/approach Two sets of powder blends with different weight percentage ratio for three elemental powder were used during DLD process. Five experiments with different processing parameters were performed to evaluate how microstructure and Vickers hardness change with laser power and laser transverse speed. Energ

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5

Vázquez, Mairym, Oscar Marcelo Suárez, Michael Thompson, et al. "Effect of Ce Content on Properties of Al-Ce-Based Composites by Powder-in-Tube Method." Journal of Composites Science 5, no. 10 (2021): 255. http://dx.doi.org/10.3390/jcs5100255.

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Al-Ce based alloys have gained recent interest and have proven to have excellent strength without heat treatment and high thermal stability. Challenges with the production of Al-Ce samples from elemental powders arise due to the elemental material before alloying being susceptible to rapid oxidation. The methodology for making superconductive wire, powder-in-tube, was used as a consolidate Al and Ce elemental powder, and Al-8 wt % Ce-10 wt % Mg composite powder into bulk nanostructured material. Powder samples are fabricated in an inert controlled atmosphere, then sealed in a tube to avoid oxi

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6

Chen, Yu, Yang Yu, Wen Cong Zhan, and Er De Wang. "Nanocrystalline Ni-30wt%Fe Supersaturated Solid Solution Synthesized by Mechanical Alloying." Applied Mechanics and Materials 490-491 (January 2014): 38–42. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.38.

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Ni-30wt%Fe elemental power mixture was mechanically milled under argon atmosphere for variuos times up to 25h.The evolution of Ni-Fe alloying during milling and the microstructure of the as-milled powders were characterized by XRD, EPMA (electron probe microanalysis), SEM and TEM, respectively. The results show that nanocrystalline Ni (Fe) supersaturated solid solution alloy powders with 30wt. % Fe in composition can be synthesized by mechanical milling of the elemental powder mixture. Both the content of Fe dissolved and the microstrain developed in the as-synthesized Ni (Fe) solid solution p

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7

Polozov, Igor A., Evgenii Borisov, and Vera Popovich. "Effect of Selective Laser Melting Process Parameters and Heat Treatment on Microstructure and Properties of Titanium Alloys Produced from Elemental Powders." Key Engineering Materials 822 (September 2019): 549–55. http://dx.doi.org/10.4028/www.scientific.net/kem.822.549.

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This work investigates the Selective Laser Melting (SLM) process for the in-situ synthesis of Ti-5Al and Ti-6Al-4V alloys using elemental powder mixture. Elemental spherical powders were used to prepare a powder mixture and then samples were produced by SLM using different volume energy density. The effects of volume energy density during SLM on samples’ relative density, chemical composition, microstructure and microhardness before and after heat treatment have been studied. It was shown that volume energy density during the SLM process significantly effects the density, microstructure of Ti-

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8

Polozov, Igor, Vadim Sufiiarov, and Anatoliy Popovich. "Investigation of Ti-6Al-4V Alloy In Situ Manufactured Using Selective Laser Melting from Elemental Powder Mixture." Solid State Phenomena 299 (January 2020): 646–51. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.646.

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This paper presents the results of the study of Selective Laser Melting (SLM) process for the in-situ synthesis of Ti-6Al-4V alloy from elemental powder mixture. Elemental spherical powders of Ti, Al and V were used to prepare a powder mixture, and then bulk specimens were produced by SLM using different process parameters. The effects of SLM process parameters on samples’ relative density, their chemical composition, the formed microstructure and microhardness before and after heat treatment have been studied. It was shown that volume energy density during the SLM process significantly effect

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9

Mushove, Tafadzwa, Hilda Kundai Chikwanda, Christopher Machio, and Sehliselo Ndlovu. "Ti-Mg Alloy Powder Synthesis via Mechanochemical Reduction of TiO₂ by Elemental Magnesium." Materials Science Forum 618-619 (April 2009): 517–20. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.517.

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This paper reports the preliminary results of an investigation on the synthesis of a Ti-Mg alloy powder through mechanochemical processing of TiO2 and Mg powders. TiO2 was mixed with elemental Mg according to a nominal stoichiometric composition with 15% excess Mg. The powder mixture was mechanically milled in a Simoloyer high energy ball mill for 5 different durations. Contamination was minimised by processing under a high purity argon atmosphere. Changes in phase composition were studied by XRD techniques. TiO2 was reduced, as shown by the formation of MgO. The extent of the reduction, as in

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10

Silva, Aline, Paulo A. P. Wendhausen, Ricardo Machado, and Waldyr Ristow. "Magnetic Properties Obtained for Fe-50Co Alloy Produced by MIM with Elemental Powders." Materials Science Forum 534-536 (January 2007): 1353–56. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1353.

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In order to obtain specific magnetic properties, it is of paramount importance to increase the alloy density of components fabricated by powder metallurgy. An alternative to increase the density of alloys such as Fe-49Co-2V would be the use of elemental Fe and Co instead of the prealloyed powder. Trying to give some insight on the industrial application of this strategy, this paper investigates the replacement of more conventional pre-alloyed Fe-49Co-2V powders with elemental Fe and Co. A previous analysis shows that it is possible to achieve higher densities using elemental Fe and Co powders

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11

Martínez-Franco, E., Thomas Klassen, Rüdiger Bormann, and D. Jaramillo-Vigueras. "Nanocrystalline Intermetallic Mg₂Ni Produced in a Batch Scale Mill." Materials Science Forum 509 (March 2006): 141–46. http://dx.doi.org/10.4028/www.scientific.net/msf.509.141.

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Nanocrystalline intermetallic Mg2Ni is successfully produced on a batch production scale from elemental powder blends by mechanical alloying using a high-energy rotor ball mill (Simoloyer). Different ball-to-powder mass ratios are used in order to provide results for scaling to industrial production. Transformation of elemental Mg-Ni powders into the Mg2Ni intermetallic is observed by x-ray diffraction. Particle morphology during milling is observed by scanning electron microscopy. A relatively low Fe contamination is estimated by energy dispersive spectrometry.

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Tomolya, Kinga, Márton Benke, Dóra Janovszky, and Árpád Kovács. "Hf Particles Reinforced Cu-Zr-Al Amorphous Powder Produced by Milling." Materials Science Forum 752 (March 2013): 30–36. http://dx.doi.org/10.4028/www.scientific.net/msf.752.30.

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This research work dealt with production of amorphous powder with nominal composition of (Cu55Zr45Al10)97Hf3 (at%). Combining the mechanical milling and alloying, powder of crystalline Cu-Zr-Al alloy mixed with Hf elemental powder were milled in order to produce a homogenous and amorphous alloy powder The master alloy and the powders milled for different time were analyzed by X-Ray Analysis (XRD) and Scanning Electron Microscopy (SEM). Particle size distribution and hardness were controlled during milling and at the end of procedure. The milling caused dissolving of the hafnium. The 25 h milli

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13

Oraeluno, Jude N., Ogbonna Okorie, Nkemakolam Nwachukwu, and Favour M. Alozie. "Comparative Characterization of Processed and Unprocessed Raphia vinifera Gum as a Potential Pharmaceutical Excipient." Medical and Pharmaceutical Journal 4, no. 2 (2025): 122–33. https://doi.org/10.55940/medphar2025142.

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Background: The pharmaceutical industry is increasingly relying on natural, plant-derived gums due to their biocompatibility, biodegradability, and versatility. Raphia vinifera gum, a natural polysaccharide, has potential as a pharmaceutical excipient. Objective: To derive both unprocessed/processed gum powders from the cut stem of the Raphia vinifera plant and to characterize/standardize the powders. Methods: The derived powders were evaluated for their physicochemical properties, phytochemical screening, elemental composition, microbial profiling, and acute toxicity test determinations using

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14

Kim, Youn Che, and Myung Jin Suk. "Expansion Behavior of Iron-Copper Compact from (FeCu) Pre-Alloyed Powder." Materials Science Forum 534-536 (January 2007): 517–20. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.517.

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Dilatometric curves of iron-copper compact made from elemental or pre-alloyed powder were compared in order to study its expansion mechanism. The compacts from a mixture of elemental iron and copper powders showed the maximum expansion at the copper powder content of 7.44mass% and at the sintering temperatures above the copper melting-point. In the case of the compacts from a mixture of iron pre-alloyed powder of (Fe- 3.44mass%Cu) and copper powder, the maximum expansion which is lower than the former case was obtained at the additive copper powder content of 4.00mass%. But the compact from a

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15

Haušild, Petr, Jaroslav Čech, Veronika Kadlecová, et al. "Technological Aspects of Fe-Al-Si Intermetallic Alloy Preparation by Mechanical Alloying." Key Engineering Materials 810 (July 2019): 101–6. http://dx.doi.org/10.4028/www.scientific.net/kem.810.101.

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In this paper, recently developed ternary FeAl20Si20 (wt.%) alloy with promising high-temperature oxidation and wear resistance was prepared by mechanical alloying in a high-energy ball mill. The possibility to speed-up the mechanical alloying process by replacing aluminium (and partly silicon) elemental powder by the pre-alloyed powder (AlSi30) with relatively fine dispersion of Si in the Al-Si eutectic was examined. The microstructure, phase composition and mechanical properties after various time of mechanical alloying were characterized. The effect of using the pre-alloyed powders on kinet

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16

Park, Hyung-Sang, Kwang-Seon Shin, and Yong-Seog Kim. "Effect of mechanical alloying on combustion synthesis of MoSi2." Journal of Materials Research 16, no. 11 (2001): 3060–68. http://dx.doi.org/10.1557/jmr.2001.0423.

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Characteristics of the combustion synthesis of MoSi2 using elemental Mo and Si powder mixtures prepared by mechanical alloying were investigated. The mechanical alloying resulted in powders of pseudolamellar structure and a partial conversion of the elemental powders to hexagonal MoSi2 phase. Combustion reaction of the mixture was ignited around 670 °C, which is much lower than that with the powder prepared by low-energy ball milling. A mathematical model was developed to demonstrate the possibility of the ignition of the combustion reaction of the lamellar structure via a solid-state diffusio

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17

Yang, Fei, Brian Gabbitas, Ajit Pal Singh, Stella Raynova, Hui Yang Lu, and Barry Robinson. "Preparation of Titanium Alloy Parts by Powder Compact Extrusion of a Powder Mixture and Scaled up Manufacture." Key Engineering Materials 704 (August 2016): 75–84. http://dx.doi.org/10.4028/www.scientific.net/kem.704.75.

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Blended Elemental Powder Metallurgy (BE-PM) is a very attractive method for producing titanium alloys, which can be near-net shape formed with compositional freedom. However, a minimization of oxygen pick-up during processing into manufactured parts is a big challenge for powder metallurgy of titanium alloys. In this paper, different approaches for preparing titanium alloy parts by powder compact extrusion with 0.05-0.1wt.% of oxygen pick-up during manufacturing are discussed. The starting materials were a powder mixture of HDH titanium powder, other elemental powders and a master alloy powder

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18

Giffoni, Y. A., Erika Coaglia Trindade Ramos, Ana Sofia Ramos, Hugo Ricardo Zschommler Sandim, and M. T. T. Pacheco. "Preparation of Nb-40Ti Powders by High-Energy Milling." Materials Science Forum 498-499 (November 2005): 146–51. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.146.

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Porous Ti-Nb alloys are promising candidates for biomedical applications. In the present study, alloy powders containing 60 wt-% Nb were prepared by high-energy milling of Nb, Ti, and/or TiH2 powders. The high-energy milling process was carried out in a planetary ball mill. The starting and as-milled materials were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM). Elemental (Nb, and Ti) and TiH2 powder mixtures with composition Nb-40wt%Ti were mechanically alloyed for 2 to 30 h. The formation of a BCC Nb(Ti) solid solution by high-energy milling using elemental

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19

Li, Bing-Yun, Li-Jian Rong, and Yi-Yi Li. "Porous NiTi alloy prepared from elemental powder sintering." Journal of Materials Research 13, no. 10 (1998): 2847–51. http://dx.doi.org/10.1557/jmr.1998.0389.

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An elemental powder sintering (EPS) technique has been developed for the synthesis of porous NiTi alloy, in which Ni and Ti powders are used as the reactants and TiH2 powder is added as a pore-forming agent and active agent. Effects of various experimental parameters (sintering temperature, sintering time, and TiH2 content) on the porosity, pore size, and pore distribution as well as phase composition in experimental alloys are investigated. It is found that in order to avoid the formation of carcinogenic pure Ni phase, the porous NiTi alloy should be synthesized over a temperature of 1223 K.

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20

Huang, Gonghao, Zefeng Fan, Liu Li, Yanjin Lu, and Jinxin Lin. "Corrosion Resistance of Selective Laser Melted Ti6Al4V3Cu Alloy Produced Using Pre-Alloyed and Mixed Powder." Materials 15, no. 7 (2022): 2487. http://dx.doi.org/10.3390/ma15072487.

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Metallic elemental powder mixture and pre-alloyed metallic powder are both frequently used powder feedstock in the additive manufacturing process. However, little research has been conducted to compare the corrosion behavior of selective laser melting (SLM) alloys, fabricated by pre-alloyed metallic powder and mixed metallic powder. Hence, it is important to investigate the corrosion behavior of SLMed alloys, as well as the corresponding cast ingot, with the aim to better understand the feasibility of designing new materials. In this work, the SLM-produced Ti6Al4V3Cu alloys were manufactured u

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Ivasishin, O. M., D. G. Savvakin, D. V. Oryshych, O. O. Stasiuk, and Li Yuanyuan. "Hydride Approach in Blended Elemental Powder Metallurgy of Beta Titanium Alloys." MATEC Web of Conferences 321 (2020): 03009. http://dx.doi.org/10.1051/matecconf/202032103009.

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The physical bases of hydrogenated titanium powders application in blended elemental powder metallurgy (BEPM) of titanium alloys were earlier developed. Hydrogen as temporary alloying addition for titanium strongly affects diffusion processes upon transformation of powder blends into alloys ensuring production of α+β and metastable β titanium alloys which mechanical properties meet standard requirements. At the same time, synthesis of metastable β alloys is complicated by a big amount of alloying elements which diffusion redistribution upon sintering has a strong impact on microstructure evolu

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Li, Xiaoqun, Yaqing Hou, Weidong Cai, et al. "Study on Crack Behavior of GH3230 Superalloy Fabricated via High-Throughput Additive Manufacturing." Materials 17, no. 17 (2024): 4225. http://dx.doi.org/10.3390/ma17174225.

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This study utilized Fe, Co, Ni elemental powders alongside GH3230 pre-alloyed powder as raw materials, employing high-throughput additive manufacturing based on laser powder bed fusion in situ to alloying technology to fabricate the bulk samples library for GH3230 superalloy efficiently. A quantitative identification algorithm for detecting crack and hole defects in additive manufacturing samples was developed. The primary focus was to analyze the composition variations in specimens at varying Fe, Co, and Ni elemental compositions and their impact on crack formation. Experimental results demon

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Rabin, B. H., J. K. Wright, R. N. Wright, and C. H. Sellers. "Grain growth behavior in Fe3Al alloys fabricated by different methods." Journal of Materials Research 9, no. 6 (1994): 1384–91. http://dx.doi.org/10.1557/jmr.1994.1384.

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Grain sizes were measured after various heat treatments in three Fe3Al alloys having similar composition that were fabricated using the techniques of ingot metallurgy (cast and wrought), hot extrusion of prealloyed powder, and hot isostatic pressing (HIP) of elemental powders. The ingot metallurgy (I/M) material exhibited normal grain growth behavior at temperatures above 750 °C, in agreement with previous observations. Both powder metallurgy (P/M) materials displayed unusual resistance to grain growth compared to the I/M alloy. In the case of the prealloyed P/M material, the initial (recrysta

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24

Duriagina, Z. A., O. S. Filimonov, V. V. Kulyk, I. A. Lemishka, and R. Kuziola. "Investigation of structural-geometric parameters and elemental composition of spherical VT20 alloy powders." Journal of Achievements in Materials and Manufacturing Engineering 2, no. 95 (2019): 49–56. http://dx.doi.org/10.5604/01.3001.0013.7914.

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Purpose: Identification of structural-geometrical parameters, technological properties and elemental composition of spherical powders in a wide fraction range with respect to the VT20 alloy has been carried out. This is important for evaluating the optimum filling of a given volume by mixture of powders of different fractions during 3D printing. Design/methodology/approach: During the investigation of spherical Ti-alloy powders, a comprehensive approach was performed using Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), Dynamic Light Scattering (DLS) and Inducti

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Strauch, Anna Luise, Volker Uhlenwinkel, Matthias Steinbacher, et al. "Comparison of the Processability and Influence on the Microstructure of Different Starting Powder Blends for Laser Powder Bed Fusion of a Fe3.5Si1.5C Alloy." Metals 11, no. 7 (2021): 1107. http://dx.doi.org/10.3390/met11071107.

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This paper examines different blends of starting materials for alloy development in the laser powder bed fusion (LPBF) process. By using blends of individual elemental, ferroalloy and carbide powders instead of a pre-alloyed gas-atomized starting powder, elaborate gas-atomization processes for the production of individual starting powders with varying alloy compositions can be omitted. In this work the model alloy Fe3.5Si1.5C is produced by LPBF from different blends of pure elemental, binary and ternary powders. Three powder blends were processed. The base material for all powder blends is a

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Jeong, Y. K., Y. S. Kim, and S. T. Oh. "Fabrication of Cu-Based SiC Composites by Spark Plasma Sintering of Cu-Nitrate Coated SiC Powders." Archives of Metallurgy and Materials 62, no. 2 (2017): 1407–10. http://dx.doi.org/10.1515/amm-2017-0217.

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AbstractAn optimum route to fabricate the Cu-based SiC composites with homogeneous microstructure was investigated. Three methods for developing the densified composites with sound interface between Cu and SiC were compared on the basis of the resulting microstructures. Starting with three powder mixtures of elemental Cu and SiC, elemental Cu and PCS coated SiC or PCS and Cunitrate coated SiC was used to obtain Cu-based SiC composites. SEM analysis revealed that the composite fabricated by spark plasma sintering using elemental SiC and Cu powder mixture showed inhomogeneous microstructure. Con

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Zhang, Haibo, Jieshuai Li, and Yingqiu Li. "Effect of Powder Recycling on the Organization and Mechanical Properties of GH4169 Alloy by Laser Metal Deposition." Coatings 13, no. 3 (2023): 659. http://dx.doi.org/10.3390/coatings13030659.

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The purpose of this research is to prepare GH4 169 alloy specimens by laser metal deposition, by investigating the changes in powder morphology, powder particle size, and elemental content during the cycling process. As well as the pore defects and microstructure of deposited samples prepared from recycled powder, we analyzed the changes in powder properties during the cycling process and the effects of using recycled powder on the organization and properties of LMD-deposited specimens. It was shown that the average particle size of the powder increased with the increase in the size of powder

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28

Coelho, Rodrigo Estevam, Ana Cris R. Veloso, Rodinei Medeiros Gomes, Tadeu Antonio de Azevedo Melo, and Severino Jackson Guedes de Lima. "Effect Ni Addition of the Cu-Al Powder by Mechanical Alloying." Materials Science Forum 498-499 (November 2005): 141–45. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.141.

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In the present work is shown the results for solid interaction of a Cu-13.4Al-2Ni (wt%) elemental powders. Together with this mixture was placed tungsten carbide balls into a cylindrical vial under argon atmosphere. The weight ratio of the balls to powder was 20 to 1. A planetary ball mill (Fritsch Pulverizette 5) was used to perform MA at 250 rpm. The elemental powder was milled at 10min, 5 and 10 hours and a small amount of the powders were collected and analyzed via X-ray diffraction, using Cu Kα radiation (λ=0.15418 nm) and differential thermal analyses from 25 up to 450oC at a heating rat

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Todai, Mitsuharu, Takeshi Nagase, Takao Hori, et al. "Fabrication of the Beta-Titanium Alloy Rods from a Mixture of Pure Metallic Element Powders via Selected Laser Melting." Materials Science Forum 941 (December 2018): 1260–63. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1260.

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The powder-bed additive manufacturing (AM) process offers advantages in terms of reduced material waste, ability to create complex shape and a decrease in the lead time from design to manufacturing. Recently, custom-made implant of Ti alloys is being developed by selective laser melting (SLM) in additive manufacturing (AM) process. However, the difficulty in the fabrication of titanium alloys due to their pre-alloyed powder cost, resulting in a limited usage of titanium alloys. To overcome this disadvantage, it is effective to fabricate the Ti alloys by SLM from mixture of pure elemental powde

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Li, Chunlong, Hongya Yu, Guangze Han, and Zhongwu Liu. "FeSiCr-Based Soft Magnetic Composites with SiO2 Insulation Coating Prepared Using the Elemental Silicon Powder Hydrolysis Method." Metals 13, no. 8 (2023): 1444. http://dx.doi.org/10.3390/met13081444.

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In this work, FeSiCr powders were coated with a SiO2 insulation layer for soft magnetic composites (SMCs) through elemental silicon powder hydrolysis, without using any expensive precursors. The effects of the reaction temperature and ammonia concentration on the structure and performance of SMCs were investigated. Through the elemental silicon powder hydrolysis process, the formation of an FeSiCr–SiO2 core-shell structure effectively reduced the core loss, increased resistivity, and improved the quality factor of SMCs. SMCs prepared with 0.10 mL/g ammonia concentration at 50 °C exhibited the

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Hu, Chen-Ti, and Sanboh Lee. "Exothermic behavior of several elemental powder mixes." Materials Science and Engineering: A 329-331 (June 2002): 69–77. http://dx.doi.org/10.1016/s0921-5093(01)01551-9.

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Bose, A., B. Moore, R. M. German, and N. S. Stoloff. "Elemental Powder Approaches to Ni3Al-Matrix Composites." JOM 40, no. 9 (1988): 14–17. http://dx.doi.org/10.1007/bf03258543.

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Asahi, Nobuo. "Mechanical alloying of Al70Pd20Mn10 elemental powder mixture." Materials Science and Engineering: A 226-228 (June 1997): 67–69. http://dx.doi.org/10.1016/s0921-5093(97)80025-1.

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Dahms, M., and S. Schwantes. "Titanium aluminide foils by elemental powder processing." Materials Science and Engineering: A 151, no. 1 (1992): L27—L29. http://dx.doi.org/10.1016/0921-5093(92)90198-a.

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Khuraibut, Y. "Elemental Sulfur Formation from Black Powder Deposits." Materials Performance 60, no. 6 (2021): 50–54. https://doi.org/10.5006/mp2021_60_6-50.

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The black powder in gas and associated processing equipment is a global phenomenon that many operating companies have had, and which some are still suffering. The composition of black powder has been found to vary significantly in chemical composition. However, the constituents mainly consist of iron sulfides and iron oxides. Another major concern is the possible formation of elemental sulfur, which could be produced as a by-product of oxidation of iron sulfides. It also can be produced from hydrogen sulfide (H2S) dissociation at elevated temperatures or by microbiological reactions involving

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Gudimetla, Kondaiah, B. Chaithanyakrushna, K. Chandra Sekhar, Balasubramanian Ravisankar, and S. Kumaran. "Densification and Consolidation of Al 5083 Alloy Powder by Equal Channel Angular Pressing." Applied Mechanics and Materials 592-594 (July 2014): 112–16. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.112.

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In this present work the elemental powders pertaining to composition of Al5083 alloy was milled using planetary ball mill (Insmart systems) for 20 h. The elemental powders are loaded in HSS vial with 10:1 ball to powder ratio at 250 RPM. Various parameters such as crystalline size, particle size and morphology have studied using X-ray diffraction analysis and scanning electron microscopy. The crystallite size of the powders determined using Williamson Hall analysis of XRD is 23 nm after 20 h of milling. These nanocrystalline Al-5083 alloy powders were consolidated using ECAP with and without a

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Ewald, Simon, Fabian Kies, Steffen Hermsen, Maximilian Voshage, Christian Haase, and Johannes Henrich Schleifenbaum. "Rapid Alloy Development of Extremely High-Alloyed Metals Using Powder Blends in Laser Powder Bed Fusion." Materials 12, no. 10 (2019): 1706. http://dx.doi.org/10.3390/ma12101706.

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The design of new alloys by and for metal additive manufacturing (AM) is an emerging field of research. Currently, pre-alloyed powders are used in metal AM, which are expensive and inflexible in terms of varying chemical composition. The present study describes the adaption of rapid alloy development in laser powder bed fusion (LPBF) by using elemental powder blends. This enables an agile and resource-efficient approach to designing and screening new alloys through fast generation of alloys with varying chemical compositions. This method was evaluated on the new and chemically complex material

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Zhang Fengying, 张凤英, 陈静 Chen Jing, 谭华 Tan Hua, 林鑫 Lin Xin, and 黄卫东 Huang Weidong. "Powder Delivery Behavior During Laser Solid Forming from Blended Elemental Powders." Chinese Journal of Lasers 36, no. 5 (2009): 1267–72. http://dx.doi.org/10.3788/cjl20093605.1267.

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Kobashi, Makoto, and Naoyuki Kanetake. "Morphological Control of Porous Structure in Al-Ti Intermetallics Foam Manufactured by Reactive Precursor Process." Materials Science Forum 794-796 (June 2014): 790–95. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.790.

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In this paper, a novel processing method (reactive precursor method) to manufacture high-melting point porous Al-Ti intermetallics is investigated. Especially, morphological control of porous structure is focused. In the reactive precursor process, precursors are made by blending aluminum and titanium powders. The precursor is heated to ignite an exothermic reaction (so called “combustion reaction”) between the elemental powders. Pore formation is a well-known intrinsic feature of the combustion reaction, and we tried to control the pore morphology. Fundamentally, the closed-cell structure can

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Farva, Umme, and Chan Park. "Quaternary Chalcogenide Nanocrystals: Synthesis of Cu2ZnSnSe4 by Solid State Reaction and their Thermoelectric Properties." MRS Proceedings 1543 (2013): 137–42. http://dx.doi.org/10.1557/opl.2013.949.

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ABSTRACTIn this paper, synthesis of Cu2ZnSnSe4 (CZTSe) materials by using simple and cost-effective solid state reaction method from the elemental Cu, ZnO, SnO and elemental Se powders are carried out. The SEM images show spherical, non-uniform size with aggregation of nanopowders. The phase separation and thermal analysis of the milled powders suggested that most of the starting powders reacted because of a mechanical alloying effect during milling process. After the solid state reaction at above 500 °C, the nanopowders crystallized into stannite single phase, which are confirm by XRD spectra

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Krinitcyn, M. G., I. A. Firsina, A. V. Baranovskiy, and M. P. Ragulina. "Formation of bulk samples from the Ti3AlC2 MAX-phase powder by selective laser sintering." Physics and Chemistry of Materials Treatment 2 (2021): 27–33. http://dx.doi.org/10.30791/0015-3214-2021-2-27-33.

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Bulk samples from the powder of the MAX-phase Ti3AlC2 were obtained by selective laser sintering (SLS). A complex structural-phase study was carried out using optical and electron microscopy, as well as X-ray phase analysis, the elemental and phase composition of the samples was determined, and the morphology of the initial powders and bulk SLS samples was described. This study allowed to describe the elemental and phase composition, as well as the morphology of both the initial powders and bulk SLS samples. Modes of selective laser sintering are established at which the maximum presence of th

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Shehu, Salisu, Abdulmumin Z. Abubakar, Umar H. Danmalam, Najma Ilyas, and Nuhu M. Danjuma. "Pharmacognostic and elemental analysis of the rhizome of C. spectabilis (Fenzl) Schumann (Costaceae)." Journal of Pharmacy & Bioresources 18, no. 1 (2021): 25–31. http://dx.doi.org/10.4314/jpb.v18i1.3.

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The extract from the rhizome of Costus spectabilis (Costaceae) has been used to treat many illnesses including eye infections and cataract. The present study aimed to establish the pharmacognostic features of the rhizome by evaluating its macro-morphological characteristics, micro-morphological features using its anatomical section, physicochemical constants and elemental profile of its powder according to standard methods. Macro-morphology revealed features typical of a rhizome. Microscopical examination shows vascular bundles scattered throughout the ground tissue of starch-filled cellulosic

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Salim, Sharifah Aishah Syed, Julie Juliewatty Mohamed, Zainal Arifin Ahmad, and Zainal Arifin Ahmad. "Effect of Nickel on Titanium Carbide Synthesized via Tungsten Inert Gas (TIG) Method." Advanced Materials Research 620 (December 2012): 384–88. http://dx.doi.org/10.4028/www.scientific.net/amr.620.384.

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Numerous methods have been used to produce high purity TiC. There is no previous study has been reported on the formation using single elemental powders of Titanium (Ti) and Carbon (C) with addition Nickel (Ni) by tungsten inert gas (TIG) weld method. In this work, TiC was synthesized via TIG method by arc melting elemental powder mixture of Ti and C at ~5 second (s) and 80 ampere (A). The effect Ni contents on TiC formation was investigated. The mixed raw material was ball milled for 24 hours followed by synthesis via TIG method. The arced samples were characterized by X-ray diffraction (XRD)

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Jia, Ming Tu, De Liang Zhang, and Brian Gabbitas. "Comparison of Blended Elemental (BE) and Mechanical Alloyed (MA) Powder Compact Forging into Ti-6Al-4V Rocker Arms." Key Engineering Materials 520 (August 2012): 82–88. http://dx.doi.org/10.4028/www.scientific.net/kem.520.82.

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Ti-6Al-4V rocker arms for internal combustion engines were produced by forging of compacts of blended powder consisting of elemental hydride-dehydride (HDH) titanium powder and Al60V40 (wt%) master alloy powder or mechanical alloyed (MA) powder synthesized by high energy mechanical milling of a mixture of HDH titanium and Al60V40 master alloy powders. The powder compacts were made by warm compaction, and their relative density was 90%. The mechanical properties and microstructures of as-forged parts made using blended powder were improved significantly with increasing holding time at forging t

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Ma, Xilin, Yaqing Hou, Heping Liu, Hao Qiu, and Xiaoqun Li. "Numerical Simulation of the Evaporation Behavior of Fe-Mn Heterogeneous Powder in Selective Laser Melting Process." Materials 17, no. 9 (2024): 2029. http://dx.doi.org/10.3390/ma17092029.

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Multi-material additive manufacturing using heterogeneous powders as raw materials is one of the important development directions of metal additive manufacturing technology. The evaporation behavior of heterogeneous powders in the selective laser melting (SLM) process has a significant influence on the accuracy of chemical composition control and the quality of the final product. In this paper, the fusion process of Fe20Mn (80 wt.% Fe and 20 wt.% Mn) heterogeneous powder, Fe and Mn elemental powders, and Fe20Mn pre-alloyed powder is numerically simulated using FLOW-3D® software and partially v

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Kayani, Saif Haider, Hafiz Muhammad Salman Ajmal, Byung-Joo Kim, Nho-Kwang Park, and Kwangjun Euh. "Influence of Powder Size on Pore Characteristics and Intermetallic Phase Kinetics in Porous Ti-Al Alloys." Crystals 14, no. 6 (2024): 559. http://dx.doi.org/10.3390/cryst14060559.

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This study investigates the impact of varying powder size on porosity, pore parameters, and intermetallic phase reaction during the reactive sintering of porous TiAl alloys. Ti52Al48 alloys were prepared using coarse (200 mesh) and fine (325 mesh) Ti powders through elemental powder metallurgy and were subsequently sintered at different temperatures, 600 and 1200 °C. Our findings reveal a consistent pore morphology and intermetallic phase microstructure across both alloys. However, samples containing fine Ti powder exhibited a higher number density of small pores compared to those incorporatin

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Sharma, Rahul, Ramesh Chandra Agarwala, and Vijaya Agarwala. "Development of Electroless Ni-P/NRAM Nanocomposite Powder with Enhanced Microwave Absorption Properties." Advanced Materials Research 67 (April 2009): 59–64. http://dx.doi.org/10.4028/www.scientific.net/amr.67.59.

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Nano radar absorbing material (NRAM) i.e. BaMe2Fe16O27 (Me2+=Fe2+) powder (10 nm) is coated with amorphous Ni-P nano layer (5-10 nm) by using electroless (EL) technology to develop EL Ni-P/NRAM nanocomposite powder. The experimental processes parameters and EL Ni-P bath composition were optimized to obtain the deposition. As-deposited nanocomposite powder was microwave annealed (MWA) with increasing radiation power from 160 to 760 watts for 5 minutes. The surface morphology, elemental contents, phase transformation and magnetic properties of NRAM powders were examined under field emission scan

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Li, Zihou, Chao Wang, Wenjing Fu, Hailin Nie, Wenxi Wang, and Jun Luo. "Highly correlated deposition characteristics between individual elemental powders and elemental powder blends of MoNbTaTi in laser melt deposition." Surface and Coatings Technology 494 (October 2024): 131418. http://dx.doi.org/10.1016/j.surfcoat.2024.131418.

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Matsuura, Kiyotaka, Yusuke Hikichi, and Yuki Obara. "Self-Propagating High-Temperature Synthesis of Carbide- and Boride-Aluminides." Advances in Science and Technology 45 (October 2006): 1024–28. http://dx.doi.org/10.4028/www.scientific.net/ast.45.1024.

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TiC- and TiB2-FeAl composites have been produced using the Self-propagating High-temperature Synthesis (SHS) method under Pseudo Hot Isostatic Pressing (PHIP). When mixtures of the elemental powders were heated to a temperature near the melting point of Al under a PHIP of 150 MPa, the powder mixtures exothermically reacted and produced TiC particle dispersed and TiBB2 particle dispersed FeAl-matrix composites. As the volume factions of TiC and TiB2 particles increased from 0.3 to 0.8, the average particle size increased from approximately 1 to 10 μm and the average Vickers hardness increased f

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Müller, Michael, Bastian Heinen, Mirko Riede, Elena López, Frank Brückner та Christoph Leyens. "Additive Manufacturing of β-NiAl by Means of Laser Metal Deposition of Pre-Alloyed and Elemental Powders". Materials 14, № 9 (2021): 2246. http://dx.doi.org/10.3390/ma14092246.

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The additive manufacturing (AM) technique, laser metal deposition (LMD), combines the advantages of near net shape manufacturing, tailored thermal process conditions and in situ alloy modification. This makes LMD a promising approach for the processing of advanced materials, such as intermetallics. Additionally, LMD allows the composition of a powder blend to be modified in situ. Hence, alloying and material build-up can be achieved simultaneously. Within this contribution, AM processing of the promising high-temperature material β-NiAl, by means of LMD, with elemental powder blends, as well a

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