Log in

Relevant bibliographies by topics / Compacts / Journal articles

To see the other types of publications on this topic, follow the link: Compacts.

Journal articles on the topic 'Compacts'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Compacts.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Narayana Swamy, K. S., Sonnappa Devaraj, and H. Krihnanppa Chandra Mohan. "Aluminum 4.5 wt. % Copper Alloy Powder Sintering Temperature Effect on Microstructure and Mechanical Properties of Spark Plasma Sintered Compact." Key Engineering Materials 937 (December 22, 2022): 47–54. http://dx.doi.org/10.4028/p-0zq05z.

Full text

Abstract:

The aluminum 4.5 wt. % copper alloy was melted in an electrical resistance furnace and atomized to produce the powder of 350 µm to 500 µm size of different shapes and sizes. The atomized powder was graded using standard set of sieves. The powder is compacted with the help of spark plasma sintering by applying the required pressure and temperature simultaneously. The sintering pressure of 25 MPa and temperatures of 480 °C and 540 °C was employed to produce sintered compacts at two different temperatures. The density of the sintered compact was measured using Archimedes principle. The surface to

APA, Harvard, Vancouver, ISO, and other styles

2

Shen, Ye Qing, and Min Deng. "Capillary Absorption of Liquid by Powder Compact and its Application on Preparation of Repeatable Cement Compacts." Advanced Materials Research 163-167 (December 2010): 2916–19. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2916.

Full text

Abstract:

Preparation of repeatable cement compacts may contribute to quantitively research of processing, structure and properties of cement materials. Capillary absorption of liquid by powder compact was briefly reviewed. Deviation degree of absorption coefficient (Dac) was designed for evaluation on repeatable preparation of cement compacts. Dry cement was compacted in special moulds. A group of orthogonal experiments were designed to investigate repeatable preparation of the compacts. Results show the most important factor influencing on repeatable preparation is the cavity size of mould. The influe

APA, Harvard, Vancouver, ISO, and other styles

3

Orlov, I. V. "Hilbert compacts, compact ellipsoids, and compact extrema." Journal of Mathematical Sciences 164, no. 4 (2010): 637–47. http://dx.doi.org/10.1007/s10958-010-9766-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Rajković, V., D. Božić, D. Vračarić, and E. Romhanji. "Properties of Dispersion-Hardened Copper Made by Internal Oxidation of Prealloyed Copper Powder Containing 2.5 wt. % Al." Materials Science Forum 494 (September 2005): 493–98. http://dx.doi.org/10.4028/www.scientific.net/msf.494.493.

Full text

Abstract:

Prealloyed copper powder containing 2.5wt. %Al was processed in a planetary ball mill to evaluate matrix hardening due to formation of Al2O3 particles in situ by internal oxidation. After milling, the powders were heat treated in hydrogen in order to reduce copper oxide formed on particle surfaces during milling. The compacts were made by hot pressing. The examinations show that the compacts possess a good combination of high strength and high electrical conductivities. After 5h of milling the microhardness of the prealloyed compact was 3 to 4 times higher than that of the as-received electrol

APA, Harvard, Vancouver, ISO, and other styles

5

Devaraj, S., H. K. Chandra Mohan, K. S. Narayana Swamy, and R. Ranganatha. "Conventional sintering of copper powder with and without addition of different weight percentage of aluminium powder." Journal of Mines, Metals and Fuels 69, no. 12A (2022): 8. http://dx.doi.org/10.18311/jmmf/2021/30086.

Full text

Abstract:

Cu-Al powder for different weight percentages of 5, 10 and 15 was ball milled for 30 min. The compacts of pure Cu, Cu- 5 wt.% Al, Cu-10 wt.% Al and Cu-15 wt.% Al was compacted using metallic die by applying 70 kN force. The compacts were kept in a heat treatment electrical resistance furnace at 600oC for 8hr for conventional sintering. The conventional sintered compacts were tested to measure the behaviour of the alloy. The density of the sintered compact of Cu, Cu-5 wt.% Al, Cu-10 wt.% Al and Cu-15 wt.% Al were calculated using water displacement method. The surface topography of the sintered

APA, Harvard, Vancouver, ISO, and other styles

6

Bailey, Kenneth W. "Evaluating the Economic Impacts of Regional Milk Pricing Authorities: The Case of Dairy Compacts." Agricultural and Resource Economics Review 29, no. 2 (2000): 208–19. http://dx.doi.org/10.1017/s1068280500005347.

Full text

Abstract:

Congress consented to the creation of the Northeast Interstate Dairy Compact in the 1996 Federal Agriculture Improvement and Reform Act. Interest is now growing in expanding this compact and creating new multi-regional dairy compacts. Dairy compacts provide a floor for Class I fluid prices and thus stabilize and enhance farm milk prices in compact regions. This analysis indicates that multi-regional dairy compacts will result in clear economic tradeoffs between dairy farmers, processors, retailers, and consumers. While dairy farmers within the compact region may economically benefit from highe

APA, Harvard, Vancouver, ISO, and other styles

7

Hempel, Nele-Johanna, Matthias M. Knopp, Korbinian Löbmann, and Ragna Berthelsen. "Studying the Impact of the Temperature and Sorbed Water during Microwave-Induced In Situ Amorphization: A Case Study of Celecoxib and Polyvinylpyrrolidone." Pharmaceutics 13, no. 6 (2021): 886. http://dx.doi.org/10.3390/pharmaceutics13060886.

Full text

Abstract:

Microwave-induced in situ amorphization of a drug into a polymeric amorphous solid dispersion (ASD) has been suggested to follow a dissolution process of the drug into the polymeric network, at temperatures above the glass transition temperature (Tg) of the polymer. Thus, increasing the compact temperature, above the Tg of the polymer, is expected to increase the rate of drug dissolution in the mobile polymer, i.e., the rate of amorphization, in a direct proportional fashion. To test this hypothesis, the present study aimed at establishing a linear correlation between the compact temperature a

APA, Harvard, Vancouver, ISO, and other styles

8

Li, Zhi, and Stavros A. Argyropoulos. "Determination of Thermal Conductivity of Mn-Al Powder Compacts using An Inverse Heat Transfer Procedure." High Temperature Materials and Processes 31, no. 4-5 (2012): 581–92. http://dx.doi.org/10.1515/htmp-2012-0095.

Full text

Abstract:

AbstractThe effective thermal conductivities of various Mn-Al powder compact compositions were measured using an Inverse Heat Transfer Procedure, and extensive validation work was also carried out. Specially fabricated cylindrical compact specimens were used equipped with two thermocouples at strategic locations. The porosity of these specimens was also measured.The estimated effective thermal conductivities of various Mn-Al compacts were in the range of 5.5 to 10.5 W m−1 °C−1, which are much lower than that of Al (237 W m−1 °C−1), and close to that of Mn (7.8 W m−1 °C−1). The effective therma

APA, Harvard, Vancouver, ISO, and other styles

9

Zhu, Y. M., Xia Wan Wu, and Zhi Hong Li. "Sintering and Crystallization of Glass-Ceramics for Optical Fiber Ferrule." Key Engineering Materials 336-338 (April 2007): 1840–42. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1840.

Full text

Abstract:

The crystallization and sintering of the Li2O-Al2O3-SiO2 glass powder compacts were studied. Results showed the relative densities of the sintered compacts with lower crystallization temperatures were higher than those with higher crystallization temperatures. A small amount of residual glass in the crystallized compact was good for sintering and densification. Compared with the heat treatment time, the heat treatment temperature was an important factor for the crystallization and sintering of glass powder compacts. The crystallized compacts with a small amount of residual glass should be sint

APA, Harvard, Vancouver, ISO, and other styles

10

Kumar, D., J. Balasubramaniam, and J. Pandit. "A Study of Mucoadhesive Bond Strength of Buccoadhesive Compacts for Systemic Drug Delivery: In-vitro/ In-vivo correlation." Scientia Pharmaceutica 69, no. 2 (2001): 123–41. http://dx.doi.org/10.3797/scipharm.aut-01-14.

Full text

Abstract:

Compacts prepared from binary combinations of Carbopol® 934 P (CP), Polycarbophil (Noveon® AA1, PC) and Hydroxy propyl cellulose (Klucel®, HPC) and coated on all but one flat surface with Poly Methyl Methacrylate - PMMA (chloroformic solution) were evaluated for mucoadhesive bond strength on a modified mucoadhesive bond strength apparatus using rabbit stomach mucosa (SM) and small intestine mucosa (SIM). In -vitro mucoadhesion tests indicated that the detachment force increased linearly with concentration of CP/PC in the compacts. Mucoadhesion of the compacts with SIM were higher when compared

APA, Harvard, Vancouver, ISO, and other styles

11

Shen, Ye Qing, and Min Deng. "Application of Capillary Absorption on Characterization of Structure of Cement Compacts Containing Micro Silica Fume." Advanced Materials Research 250-253 (May 2011): 614–17. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.614.

Full text

Abstract:

Effect of packed structure on behavior of capillary absorption was briefly reviewed. Silica fume blended cement was pressed at pressure of 18MPa in a special mould to prepare packed structure. Structure of blended cement compacts was characterized by method of capillary ethanol absorption. Results show that linear correlation coefficient between absorption weight and square root of absorption time for each compact is more than 0.999. Micro silica fume is randomly filled into the skeleton of the compact. With increase of silica fume addition, porosity of the compacts and total length of average

APA, Harvard, Vancouver, ISO, and other styles

12

Gharaibeh, Shadi F., Wasfy M. Obeidat, and Nizar Al-Zoubi. "Effect of post-compaction heating on characteristics of microcrystalline cellulose compacts." e-Polymers 22, no. 1 (2022): 536–43. http://dx.doi.org/10.1515/epoly-2022-0049.

Full text

Abstract:

Abstract Compacts of microcrystalline cellulose were prepared at applied compression pressures of 21, 32, 43, 53, and 64 MPa. Compacts were subjected to elevated temperatures of 125°C, 150°C, and 175°C according to a 5-min heating program. The effect of these thermal treatments on compact volumes, densities, porosities, tensile strengths, and weight loss was determined. There was no change in the volumes of the compacts due to thermal treatments in most of the conditions. However, the densities of the compacts decreased while the porosities increased as a consequence of weight loss. Moreover,

APA, Harvard, Vancouver, ISO, and other styles

13

Boribayeva, Aidana, Gulfairuz Iniyatova, Aruzhan Uringaliyeva, and Boris Golman. "Porous Structure of Cylindrical Particle Compacts." Micromachines 12, no. 12 (2021): 1498. http://dx.doi.org/10.3390/mi12121498.

Full text

Abstract:

The porous compacts of non-spherical particles are frequently used in energy storage devices and other advanced applications. In the present work, the microstructures of compacts of monodisperse cylindrical particles are investigated. The cylindrical particles with various aspect ratios are generated using superquadrics, and the discrete element method was adopted to simulate the compacts formed under gravity deposition of randomly oriented particles. The Voronoi tessellation is then used to quantify the porous microstructure of compacts. With one exception, the median reduced free volume of V

APA, Harvard, Vancouver, ISO, and other styles

14

Ahmad, Mohamad Azmirruddin, Fazira Suriani Mohamed Fadzil, Mazlan Mohamad, Mohamad Hasnan Abdul Hamid, and Mohd Asri Selamat. "Microstructure and Mechanical Properties Study of CoCrMo Parts Sintered under Control Atmosphere." Advanced Materials Research 1133 (January 2016): 85–89. http://dx.doi.org/10.4028/www.scientific.net/amr.1133.85.

Full text

Abstract:

Their excellent properties, such as corrosion resistance, fatigue strength and bio-compatibility, made Cobalt-chromium-molybdenum (CoCrMo) were used in total hip and knee replacements and dental devices. The green CoCrMo compacts specimens in rectangle shape were fabricated by powder pressing technique. The effects of sintering temperature and atmosphere on the mechanical properties and microstructure of the CoCrMo compacts which is sintered at 1300°C-1400°C under two different inert gases sintering atmosphere (Ar2/N2H2) were investigated. The experimental results show that the grain boundarie

APA, Harvard, Vancouver, ISO, and other styles

15

Liu, Yan Chun, An Ze Shui, Xue Tan Ren, and Ling Ke Zeng. "Sintering Shrinkage Anisotropy of Spherical Alumina Powder Compacts with Particle Orientation." Key Engineering Materials 334-335 (March 2007): 293–96. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.293.

Full text

Abstract:

Spherical alumina powder and dispersant were mixed with distilled and deionized water, and ball milled to make alumina slurry. The slurry was dried in a high magnetic field to make a compact. Subsequently, the compact was cold-isostatic-pressed (CIP) to enhance the homogeneity in particle packing density. Anisotropy of shrinkage during sintering was examined for the alumina compacts in detail. Particle orientation existed in the spherical alumina powder compacts prepared in 10T, and made them shrink anisotropically during sintering. Sintering shrinkage was larger in the direction parallel to m

APA, Harvard, Vancouver, ISO, and other styles

16

Çavdar, U., E. Atik, and A. Ataç. "Mechanical properties and hardness results of the medium frequency induction sintered iron based powder metal bushings." Science of Sintering 46, no. 2 (2014): 195–203. http://dx.doi.org/10.2298/sos1402195c.

Full text

Abstract:

In this study; iron based powder metal (PM) bushing compacts were sintered via medium frequency induction heating system. Iron based powders were mixed with 2 wt.% copper (Cu), 0.3 wt.% carbon (C) and 1 wt.% zinc stearat (Zn-st) via V-Type mixer. PM compacts were sintered by 2 different sintering processes. One of them was conventional sintering method other was medium frequency induction sintering method. In conventional sintering process, PM bushing compacts were sintered under inert environmental at 1120?C for 30 minutes. In medium frequency induction sintering process, PM bushing compacts

APA, Harvard, Vancouver, ISO, and other styles

17

Izui, Hiroshi, and Genki Kikuchi. "Sintering Performance and Mechanical Properties of Titanium Compacts Prepared by Spark Plasma Sintering." Materials Science Forum 706-709 (January 2012): 217–21. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.217.

Full text

Abstract:

Titanium alloys were produced by blended elemental powder metallurgy (P/M) method. We focused on the effect of alloying elements (Fe, Mo, and Al) on the consolidation and mechanical properties of Ti compacts prepared by spark plasma sintering. The effects of amount of alloying elements and sintering temperature on the relative density and tensile properties of Ti compacts were investigated. The addition of β-stabilizing elements (Fe and Mo) significantly improved the densification of Ti compacts, where the relative density ratio of Ti-5 wt% Mo specimen became higher than 99.9 %, and Ti-5 wt% F

APA, Harvard, Vancouver, ISO, and other styles

18

Zhou, Rui, Lian Hong Zhang, and Yu Hong Liu. "Investigation of Residual Stress in Green Compacts of Metal Powder Using X-Ray Diffraction." Advanced Materials Research 554-556 (July 2012): 461–64. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.461.

Full text

Abstract:

Residual stresses in green compacts have a significant influence on the quality of the compact and post-compaction processes like part handling. In this study, the latest European and American standard for residual stress measurement by X-ray diffraction have been used to obtain more exact residual stresses in surface of green compacts as experimental evidence for simulation. The influence of kinds of powders, compacting pressure and friction on residual stresses in green compact has been studied.

APA, Harvard, Vancouver, ISO, and other styles

19

Kwon, Y. S., and K. T. Kim. "Densification Forming of Alumina Powder—Effects of Power Law Creep and Friction." Journal of Engineering Materials and Technology 118, no. 4 (1996): 471–77. http://dx.doi.org/10.1115/1.2805944.

Full text

Abstract:

High temperature forming processes of alumina powder compacts were analyzed by using constitutive equations which are capable of predicting densification and grain growth under diffusional creep and power law creep. Experimental results for alumina powder compacts were compared with finite element calculations by using the constitutive equations. The effects of friction between alumina powder compact and punches during sinter forging of alumina powder compacts were also investigated. Densification mechanism maps of alumina powder, which can be used for the optimization of various process varia

APA, Harvard, Vancouver, ISO, and other styles

20

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

21

Miura, Hideshi, Hiroyuki Maeda, Makoto Uemura, Teruie Takemasu, and Masaaki Otsu. "Establishment of Laser Sintering Technique for Titanium Powder." Materials Science Forum 534-536 (January 2007): 465–68. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.465.

Full text

Abstract:

This paper investigates the characteristic of single-layered and multi-layered compacts made by selective laser sintering using titanium powder. The surface texture and tensile strength were investigated by using single-layered compacts. There were few defects in surface of specimen laser sintered in vacuum, and the roughness was smoother than that of the specimen laser sintered in argon. Maximum tensile strength of single-layered compact laser sintered in vacuum was about 200MPa. The shrinkage and mechanical strength were investigated by using multi-layered compacts. There was a unique tenden

APA, Harvard, Vancouver, ISO, and other styles

22

Zou, Qin, Ming-Zhi Wang, Wen Gong, Qiang-Hua Yu, Yan-Guo Li, and Yu-Cheng Zhao. "Nanopolycrystalline Diamond Sintered from Onion-Like Carbon." Journal of Nanomaterials 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/271494.

Full text

Abstract:

The onion-like carbons (OLCs) annealed at 900–1400°C were used as raw materials to synthesize additive-free D-D type nanopolycrystalline diamond (nPCD) compacts in the industrial sintering conditions of 5.5 GPa, 1200°C, and 15 min. The results showed that the OLCs were transformed into additive-free D-D type nPCD compacts in industrial sintering conditions. The nPCD compacts contained a large number of nanotwins. The purities and performances of nPCD compacts were homogeneous in three dimensions. The purity and physical and mechanical performances of the nPCD compact (denoted as nPCD11) sinter

APA, Harvard, Vancouver, ISO, and other styles

23

Roper, Cindy G. "Interstate Water Compacts: Partnerships for Transboundary Water Resource Management." Journal of South Carolina Water Resources, no. 2 (June 1, 2015): 24–33. http://dx.doi.org/10.34068/jscwr.02.04.

Full text

Abstract:

While there are both successes and challenges related to the use of interstate water compacts, in their most effective forms they allow states to take a comprehensive, holistic approach to water management. Successful compacts tend to encompass the natural hydrologic boundaries of the water basin. They are more likely to utilize a commission type governance structure with sufficient authority to carry out the mission and goals of the compacting agreement. Successful compacts are flexible and allow for future developments (including climate change) while being cognizant of the need to protect a

APA, Harvard, Vancouver, ISO, and other styles

24

Raynova, Stella, De Liang Zhang, D. Polo, L. Gonthier, W. Egea, and V. N. Nadakuduru. "Tensile Properties and Fracture Behaviour of Induction Sintered Ti and Ti-6Al-4V (wt %) Powder Compacts." Advanced Materials Research 275 (July 2011): 196–99. http://dx.doi.org/10.4028/www.scientific.net/amr.275.196.

Full text

Abstract:

Induction heating of powder compacts could be a very effective method for metal powder consolidation to get the final product or as an intermediate consolidation step to produce feedstock for metal powder forging or extrusion. Our study has proven that only a few minutes of induction heating, of Ti and Ti-6Al-4V (wt %) powder compacts, increases their density dramatically and causes a significant sintering effect, as evidenced by the formation of interparticle diffusion bonding and reflected by the tensile properties of the induction sintered powder compacts. This paper presents and discusses

APA, Harvard, Vancouver, ISO, and other styles

25

Usta, Mustafa Cem, Can Rüstü Yörük, Mai Uibu, Tiina Hain, Andre Gregor, and Andres Trikkel. "CO2 Curing of Ca-Rich Fly Ashes to Produce Cement-Free Building Materials." Minerals 12, no. 5 (2022): 513. http://dx.doi.org/10.3390/min12050513.

Full text

Abstract:

In this study, fly ash (FA) compacts were prepared by accelerated carbonation as a potential sustainable building material application with the locally available ashes (oil shale ash (OSA), wood ash (WA) and land filled oil shale ash (LFA)) of Estonia. The carbonation behaviour of FAs and the performance of 100% FA based compacts were evaluated based on the obtained values of CO2 uptake and compressive strength. The influence of different variables (compaction pressure, curing temperature, CO2 concentration, and pressure) on the CO2 uptake and strength development of FA compacts were investiga

APA, Harvard, Vancouver, ISO, and other styles

26

Atasoy, Ahmet, and Ahmet Ersoy. "Sintering of Y-SiALON Ceramic." Solid State Phenomena 147-149 (January 2009): 902–7. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.902.

Full text

Abstract:

In this study, two different starting compositions were prepared according to two cation values, and then the mixture was compacted uniaxially in a die and the green compacts were subjected to cold isostatic pressing. They were sintered at 1700 °C and 1750 °C for 30 and 120 min under nitrogen atmosphere. The sintered compacts were analyzed for hardness, densification phase and microstructure. The compacts were analyzed using X-Ray, SEM-EDS techniques. The density of the samples was measured by the Archimedes method. The results showed that starting composition was suitable for manufacturing of

APA, Harvard, Vancouver, ISO, and other styles

27

CHIBA, AKIRA, and YASUHIRO MORIZONO. "FABRICATION OF TRICALCIUM PHOSPHATE COMPACTS BY UNDERWATER-SHOCK CONSOLIDATION." International Journal of Modern Physics B 22, no. 09n11 (2008): 1783–88. http://dx.doi.org/10.1142/s0217979208047419.

Full text

Abstract:

The present study is to fabricate dense tricalcium phosphate (TCP) compacts by our newly developed underwater-shock consolidation technique and to investigate the characteristics of the compacts. By adding Al 2 O 3 powder to β-TCP powder, the biocomposites were fabricated to improve the fracture toughness. Sound compacts of α- and β-TCP powders and β-TCP/ Al 2 O 3 biocomposite powder were fabricated without any cracks and tears. The relative densities of α- and β-TCP compacts were about 85% in as-compacted state and more 94% after annealing at 1373K for 7.2ks. Compressive strengths of α- and β

APA, Harvard, Vancouver, ISO, and other styles

28

Ngai, Tungwai Leo, Zhi Yu Xiao, Yuan Biao Wu, and Yuan Yuan Li. "Studies on Preparation of Ti₃SiC₂ Particulate Reinforced Cu Matrix Composite by Warm Compaction and Its Tribological Behavior." Materials Science Forum 534-536 (January 2007): 929–32. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.929.

Full text

Abstract:

Conventional powder metallurgy processing can produce copper green compacts with density less than 8.3 g/cm3 (a relative density of 93%). Performances of these conventionally compacted materials are substantially lower than their full density counterparts. Warm compaction, which is a simple and economical forming process to prepare high density powder metallurgy parts or materials, was employed to develop a Ti3SiC2 particulate reinforced copper matrix composite with high density, high electrical conductivity and high strength. In order to clarify the warm compaction behaviors of copper powder

APA, Harvard, Vancouver, ISO, and other styles

29

Wen, Chan Chao, and Wen Shyong Kuo. "Experimental Study on Shear Failure Behaviors and Wear Resistance of Copper-Electroplated Graphite Compacts." Advanced Materials Research 934 (May 2014): 53–59. http://dx.doi.org/10.4028/www.scientific.net/amr.934.53.

Full text

Abstract:

This work examines the processing and some mechanical properties of copper-electroplated graphite compacts. Shear and wear tests were conducted. Natural graphite (NG) flakes were compressed to make graphite compacts. No polymer binder was added in the compact. For reinforcing and preventing the NG particles from peeling off, a copper layer was electroplated on the compact. The density of green graphite compact approached a limit when the forming pressure was higher than 100 MPa. The results indicated that the shear strengths increase 150% and the wear resistance is improved more than ten times

APA, Harvard, Vancouver, ISO, and other styles

30

Pavlov, Dmitriy A. "Constructive description of Hölder classes on some multidimensional compact sets." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 8, no. 3 (2021): 430–41. http://dx.doi.org/10.21638/spbu01.2021.305.

Full text

Abstract:

We give a constructive description of Hölder classes of functions on certain compacts in Rm (m > 3) in terms of a rate of approximation by harmonic functions in shrinking neighborhoods of these compacts. The considered compacts are a generalization to the higher dimensions of compacts that are subsets of a chord-arc curve in R3. The size of the neighborhood is directly related to the rate of approximation it shrinks when the approximation becomes more accurate. In addition to being harmonic in the neighborhood of the compact the approximation functions have a property that looks similar to

APA, Harvard, Vancouver, ISO, and other styles

31

Wang, Zhan Lei, Hong Yu Xu, Yi Fan Li, and Qun Mei. "Research on Explosive Compaction Technology and Properties of WC/Cu Composites." Advanced Materials Research 634-638 (January 2013): 1994–99. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.1994.

Full text

Abstract:

This paper uses the explosive compaction method to produce Cu-matrix composites. The powders of Cu and WC were prepared by high-energy ball-milling. Experiments have been performed to compact powders of Cu and WC using cylindrical configuration. The results showed that the detonation velocity had effects on the density of the compacts. The effect has been detailedly studied. The compacted WC/Cu composites have been subjected to hot rolling. The microstructure, hardness, electrical conductivity and softening temperature of the composites have also been mentioned.

APA, Harvard, Vancouver, ISO, and other styles

32

Minamino, Yoritoshi, Yuichiro Koizumi, Nobuhiro Tsuji, Naoko Hirohata, Kiyoshi Mizuuchi, and Yoshihira Ohkanda. "Bulk Fe-Al-C Nanoalloys Made by Mechanically Alloying with Subsequent Spark Plasma Sintering and Their Mechanical Properties." Solid State Phenomena 101-102 (January 2005): 103–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.101-102.103.

Full text

Abstract:

Three kinds of bulk nanocrystalline Fe-24at%Al-Xat%C (X=1,2,4) alloy were produced from Fe and Al powders with addition of methanol by MA with subsequent SPS at 1273K under 64MPa. Their microstructure and mechanical properties were investigated. The compacts have the relative densities of 99.97% (1at%C) to 99.6% (4at%C). The structure of compacts with 1at%C is composed of Fe3Al grains of 1.5µm in diameter and nano k-carbides (Fe3AlC0.5) precipitates, while those of compacts with 2 and 4at%C are composed of nanocrystalline Fe3Al of about 80nm in diameter, nano k-carbides and a-grains of about 1

APA, Harvard, Vancouver, ISO, and other styles

33

Surzhikov, A. P. "ANALYSIS OF THE APPLICABILITY OF PHYSICAL MODELS TO DESCRIBE DENSIFICATION OF LITHIUM FERRITE COMPACTS DURING SINTERING IN THE FIELD OF INTENSE ELECTRON BEAM." Eurasian Physical Technical Journal 17, no. 2 (2020): 138–45. http://dx.doi.org/10.31489/2020no2/138-145.

Full text

Abstract:

The paper analyzes the possibility of describing the accelerated sintering of lithium-titanium compacts under high-power radiation effects in terms of classical physical models developed by Kuczynski and Johnson based on the kinetic analysis of ferrite compact densification. LiTi ferrites synthesized by ceramic technology in laboratory conditions were investigated. The first portion of the compacts was sintered in air in thermal ovens at 900–1100°C for 30 minutes at a heating rate of 900 °C/min. The second portion of the compacts was sintered in a similar mode but using a radiation-thermal met

APA, Harvard, Vancouver, ISO, and other styles

34

Ternero, Fátima, Eduardo S. Caballero, Raquel Astacio, Jesús Cintas, and Juan M. Montes. "Nickel Porous Compacts Obtained by Medium-Frequency Electrical Resistance Sintering." Materials 13, no. 9 (2020): 2131. http://dx.doi.org/10.3390/ma13092131.

Full text

Abstract:

A commercially pure (c.p.) nickel powder was consolidated by Medium-Frequency Electrical Resistance Sintering (MF-ERS). In this consolidation technique, a pressure and the heat released by a high-intensity and low-voltage electrical current are concurrently applied to a metal powder mass. A nickel powder with a high tap porosity (86%) and a low applied pressure (only 100 MPa) is chosen in order to be able to obtain compacts with different levels of porosity, to facilitate the study of the porosity influence on the compact properties. The influence of current intensity and heating time on the g

APA, Harvard, Vancouver, ISO, and other styles

35

Zhuraev, T. F., Z. O. Tursunova, and K. R. Zhuvonov. "Covariant Functors and Shapes in the Category of Compacts." Contemporary Mathematics. Fundamental Directions 65, no. 1 (2019): 21–32. http://dx.doi.org/10.22363/2413-3639-2019-65-1-21-32.

Full text

Abstract:

In this paper, we consider covariant functors F : Comp → Comp acting in category of shape-preserving compact sets [2], inﬁnite compact sets, and shape equivalence [9]. Also we study action of compact functors and shape properties of the compact space X consisting of connected components ОX of the compact X as well as shape identity ShX = ShY of inﬁnite compacts X and Y for the space P (X) of probability measures and its subspaces.

APA, Harvard, Vancouver, ISO, and other styles

36

Ismail, Roslina, and Iskandar Idris Yaacob. "Synthesis and Characterization of Nanocrystalline Ni₃Al Intermetallic via Mechanical Alloying and Reaction Synthesis." Key Engineering Materials 306-308 (March 2006): 1121–26. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.1121.

Full text

Abstract:

Stoichiometric nanocrystalline Ni3Al was prepared by mechanical alloying of elemental Ni and Al powders under argon gas atmosphere for different time (4-48h). The nanostructured Ni3Al powders were consolidated into bulk compacts and sintered in a small DTA furnace under flowing Argon to observe the exothermic reaction between the stoichiometric Ni and Al. The estimated crystallite size showed that the mechanically alloyed Ni3Al grain size decrease from 127 nm to 9.36nm with increasing mechanical alloying time from 4h to 48h. Agglomerations of the powder particles prevalently occurred as observ

APA, Harvard, Vancouver, ISO, and other styles

37

Muraz, Gilbert. "Multiplicateurs compacts." Bulletin of the Belgian Mathematical Society - Simon Stevin 4, no. 5 (1997): 601–12. http://dx.doi.org/10.36045/bbms/1105737763.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Lim, Joong Yeon, Jung Min Seo, and Beong Bok Hwang. "A Numerical Analysis of Powdered Metal Compaction Processes for Two-Level Flanged Solid Cylindrical Components." Materials Science Forum 475-479 (January 2005): 3251–54. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3251.

Full text

Abstract:

A finite element method for the compaction process of metallic powder is introduced in the present work. Basic equations for the finite element formulation are summarized. A yield criterion, which is modified by describing asymmetric behavior of powder metal compacts, is introduced and applied to a certain class of powdered metal compaction processes. Two-level flanged solid cylindrical components are analyzed in three different compacting methods with three different compact geometries. The simulation results are summarized in terms of relative density distribution within compacts, pressure d

APA, Harvard, Vancouver, ISO, and other styles

39

Dominik, Martin, Barbora Vraníková, Petra Svačinová, et al. "Comparison of Flow and Compression Properties of Four Lactose-Based Co-Processed Excipients: Cellactose® 80, CombiLac®, MicroceLac® 100, and StarLac®." Pharmaceutics 13, no. 9 (2021): 1486. http://dx.doi.org/10.3390/pharmaceutics13091486.

Full text

Abstract:

The utilization of co-processed excipients (CPEs) represents a novel approach to the preparation of orally disintegrating tablets by direct compression. Flow, consolidation, and compression properties of four lactose-based CPEs—Cellactose® 80, CombiLac®, MicroceLac® 100, and StarLac®—were investigated using different methods, including granulometry, powder rheometry, and tablet compaction under three pressures. Due to the similar composition and the same preparation technique (spray drying), the properties of CPEs and their compacts were generally comparable. The most pronounced differences we

APA, Harvard, Vancouver, ISO, and other styles

40

Paranin, S., Victor Ivanov, Alexey Nikonov, et al. "Densification of Nano-Sized Alumina Powders under Radial Magnetic Pulsed Compaction." Advances in Science and Technology 45 (October 2006): 899–904. http://dx.doi.org/10.4028/www.scientific.net/ast.45.899.

Full text

Abstract:

An influence of aggregation degree of alumina nanopowder and of radial magnetic pulsed compaction conditions on the powder densification and on the density distribution inside compacts has been investigated experimentally. The usage of radial magnetic pulsed compaction allows to compact alumina nanopowders up to high densities at low degree of aggregation. The compacts homogeneity is attained by appropriate compaction pulse duration and by the usage of powder packing prior to compaction until the condition with high local sound speed is achieved.

APA, Harvard, Vancouver, ISO, and other styles

41

Clasen, Rolf, and Christian Oetzel. "Near Net Shaping with Bimodal Powders on Shaped Membranes via EPD." Key Engineering Materials 412 (June 2009): 45–50. http://dx.doi.org/10.4028/www.scientific.net/kem.412.45.

Full text

Abstract:

The electrophoretic deposition (EPD) is a very promising process for shaping compacts, especially for nanopowders. Up till now EPD is not used on a large-scale production of ceramic products. Additionally, the higher cost of nanopowders was also a barrier for the development of new products. As the deposition rate at EPD is independent of particle size, it is an ideal process for shaping compacts of powder mixtures with nanopowders. Silica and zirconia powders were used as model systems to demonstrate the advantages of EPD. Applications might be the preparation of high-purity silica glass for

APA, Harvard, Vancouver, ISO, and other styles

42

Kishimura, Hiroaki, Yuki Yano, and Hitoshi Matsumoto. "Consolidation of Mg₂Si Powder Using Shockwave Generated by Projectile Impact." Materials Science Forum 767 (July 2013): 177–82. http://dx.doi.org/10.4028/www.scientific.net/msf.767.177.

Full text

Abstract:

A series of shock compaction experiments on as-received and ball-milled Mg2Si powder were conducted. The crystalline size in the shocked compacts obtained from the ball-milled powder was equivalent to that of the compacts obtained from the as-received powder. Although the shock pressure was higher than the phase transition pressure, the crystal structure reverted to its original structure under ambient conditions. For the shocked compact obtained from the ball-milled powder, a MgO peak appeared in the X-ray diffraction pattern.

APA, Harvard, Vancouver, ISO, and other styles

43

Guignard, Jérémy, Mythili Prakasam, and Alain Largeteau. "A Review of Binderless Polycrystalline Diamonds: Focus on the High-Pressure–High-Temperature Sintering Process." Materials 15, no. 6 (2022): 2198. http://dx.doi.org/10.3390/ma15062198.

Full text

Abstract:

Nowadays, synthetic diamonds are easy to fabricate industrially, and a wide range of methods were developed during the last century. Among them, the high-pressure–high-temperature (HP–HT) process is the most used to prepare diamond compacts for cutting or drilling applications. However, these diamond compacts contain binder, limiting their mechanical and optical properties and their substantial uses. Binderless diamond compacts were synthesized more recently, and important developments were made to optimize the P–T conditions of sintering. Resulting sintered compacts had mechanical and optical

APA, Harvard, Vancouver, ISO, and other styles

44

Tolouei, Ranna, Singh Ramesh, Iis Sopyan, Chou Yong Tan, Mahdi Amiriyan, and Wan Dung Teng. "Dependence of the Fracture Toughness on the Sintering Time of Dense Hydroxyapatite Bioceramics." Materials Science Forum 694 (July 2011): 391–95. http://dx.doi.org/10.4028/www.scientific.net/msf.694.391.

Full text

Abstract:

Fracture toughness dependence of sintered hydroxyapatite (HA) bioceramics on the sintering time was studied. The nanocrystalline and highly pure Hydroxyapatite powders produced by wet chemical precipitation method were used as starting material. After uniaxial and cold isostatic pressing, the green HA samples sintered at temperatures ranging from 1000 °C to 1300 °C with different sintering time. Dense compacts with grain sizes in the nanometer to micrometer range were processed. The average grain size of HA compact sintered at 1000 °C was around 500 nm. Grain size increased to 3 µm when the co

APA, Harvard, Vancouver, ISO, and other styles

45

Naureen, Faiza, Yasar Shah, Sayyed Ibrahim Shah, et al. "Formulation Development of Mirtazapine Liquisolid Compacts: Optimization Using Central Composite Design." Molecules 27, no. 13 (2022): 4005. http://dx.doi.org/10.3390/molecules27134005.

Full text

Abstract:

Mirtazapine is a tetracyclic anti-depressant with poor water solubility. The aim of this study was to improve the dissolution rate of mirtazapine by delivering the drug as a liquisolid compact. Central composite design (CCD) was employed for the preparation of mirtazapine liquisolid compacts. In this, the impacts of two independent factors, i.e., excipient ratio (carrier:coating) and different drug concentration on the response of liquisolid system were optimized. Liquisolid compacts were prepared using propylene glycol as a solvent, microcrystalline cellulose as a carrier, and silicon dioxide

APA, Harvard, Vancouver, ISO, and other styles

46

Pampuro, Niccolò, Patrizia Busato, and Eugenio Cavallo. "Effect of Densification Conditions on Specific Energy Requirements and Physical Properties of Compacts Made from Hop Cone." Energies 11, no. 9 (2018): 2389. http://dx.doi.org/10.3390/en11092389.

Full text

Abstract:

Hop cones, due to their essential flavor, are one of the four main ingredients for beer production. The paper reports the results on an investigation of the densification process of hop cones. This experiment investigated (i) the effects of compression pressure in the range of 40 to 80 MPa and pressure application time in the range of 10 to 40 s on the final density and durability of the compacts made from hop cones and ii) the specific compression energy required for the process. The specific compression energy requirements to compact hop cones ranged from 14.20 to 24.48 kJ kg−1. The final co

APA, Harvard, Vancouver, ISO, and other styles

47

Taştan, Mehmet, Hayrettin Gökozan, Pınar Çavdar, Gürkan Soy, and Uğur Çavdar. "Cost analysis of T6 induction heat treatment for the aluminum-copper powder metal compacts." Science of Sintering 52, no. 1 (2020): 77–85. http://dx.doi.org/10.2298/sos2001077t.

Full text

Abstract:

This work compares an energy cost and an energy consumption results of the 4 wt.% cupper mixed aluminum based powder metal (PM) compacts processing under induction or furnace heating. Total power and energy consumptions and total energy costs per kilogram and compact have been analyzed. T6 precipitation heat treatment applications have been applied with two different methods, one with 2.8 kW, 900 kHz ultra-high frequency induction heating system (UHFIHS), other with 2 kW chamber furnace. In the first method, Al-Cu PM compacts have been heated by induction at 580 ?C in one minute and then coole

APA, Harvard, Vancouver, ISO, and other styles

48

Tolouei, R., Singh Ramesh, Chou Yong Tan, Mahdi Amiriyan, and Wan Dung Teng. "Effect of Grain Size on Vickers Microhardness and Fracture Toughness in Calcium Phosphate Bioceramics." Applied Mechanics and Materials 83 (July 2011): 237–43. http://dx.doi.org/10.4028/www.scientific.net/amm.83.237.

Full text

Abstract:

Grain size dependences of Vickers microhardness and indentation fracture toughness in fully dense hydroxyapatite bioceramics without additives were studied. The nanostructure and highly pure Hydroxyapatite powders produced by wet chemical precipitation method were used as starting material. After uniaxial and cold isostatic pressing, the green HA samples sintered at temperatures ranging from 1000 °C to 1300 °C with one minute holding time. Dense compacts with grain sizes in the nanometer to micrometer range were processed. The average grain size of HA compact sintered at 1000 °C was around 500

APA, Harvard, Vancouver, ISO, and other styles

49

Montes, Juan M., Jesus Cintas, Francicso Gomez Cuevas, and José A. Rodríguez. "Electrical Resistance Sintering of M.A. Al-5AlN Powders." Materials Science Forum 514-516 (May 2006): 1225–29. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1225.

Full text

Abstract:

In this work, mechanically alloyed Al-5AlN powders have been sintered by the Electrical Resistance Sintering (E.R.S.) technique. A die of alumina-base refractory concrete has been employed. Several electric intensity currents and passage times through the compact have been tested during the consolidation process. Compacts have been mechanically characterized by their hardness distribution and by an indirect tensile test. The obtained results are compared with the corresponding values of compacts prepared with the same powders by the conventional route of cold pressing and furnace sintering. Fi

APA, Harvard, Vancouver, ISO, and other styles

50

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!