Enhanced mechanical properties and thermal conductivity of W-30Cu composite fabricated with monodisperse and nearly spherical W powder
Source abstract
Abstract
Abstract In this study, the W-30Cu composite was fabricated by infiltration using monodisperse and nearly spherical W powder, which was prepared via jet milling. Compared with the conventional W-30Cu composite, the microstructure homogeneity of the as-prepared W-30Cu composite has been dramatically improved, and the W-W contiguity and variable coefficient of W grain size are as low as 0.324 and 0.28, respectively. Hence, in both tensile and compressive test, the as-prepared W-30Cu composite exhibits higher strength and ductility. The uniform microstructure also enhances the thermal conductivity of the W-Cu composites at all temperatures. At room temperature, the thermal conductivity of the as-prepared W-30Cu composite is 256.7 W·m−1·K−1, reaching 96.9% of the theoretical value.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. W-Cu composites with submicron- and nanostructures: progress and challenges10.1038/s41427-019-0179-x ↗
2. Fabrication of fine-grained W-Cu composites with high hardness10.1016/j.jallcom.2018.06.338 ↗
3. W-Cu composites with homogenous Cu-network structure prepared by spark plasma sintering using core-shell powders10.1016/j.ijrmhm.2019.05.003 ↗
4. Sintering behavior of molybdenum-copper and tungsten-copper alloys by using ultrafine molybdenum and tungsten powders as raw materials10.1016/j.ijrmhm.2020.105194 ↗
5. Low-temperature densification and excellent thermal properties of W-Cu thermal-management composites prepared from copper-coated tungsten powders10.1016/j.jallcom.2013.11.003 ↗
6. Enhanced ductility of a W-30Cu composite by improving microstructure homogeneity10.3390/met9060646 ↗
7. Effect of Zn and Ni added in W-Cu alloy on penetration performance and penetration mechanism of shaped charge liner10.1016/j.ijrmhm.2015.07.022 ↗
8. Synthesis of ultrafine/nanocrystalline W-(30-50)Cu composite powders and microstructure characteristics of the sintered alloys10.1016/j.ijrmhm.2011.06.011 ↗
9. Enhanced liquid-phase sintering of W-Cu composites by liquid infiltration10.1016/j.ijrmhm.2013.12.004 ↗
10. Infiltration sintering of WCu alloys from copper-coated tungsten composite powders for superior mechanical properties and arc-ablation resistance10.1016/j.jallcom.2017.08.164 ↗
11. Melt infiltrated tungsten-copper composites as advanced heat sink materials for plasma facing components of future nuclear fusion devices10.1016/j.fusengdes.2017.01.042 ↗
12. In situ synthesis of core-shell W-Cu nanopowders for fabricating full-densified and fine-grained alloys with dramatically improved performance10.1016/j.jallcom.2020.156958 ↗
13. High hardness and wear resistance of W-Cu composites achieved by elemental dissolution and interpenetrating nanostructure10.1088/1361-6528/ab5e5d ↗
14. Preparation of W-Cu alloy with high density and ultrafine grains by mechanical alloying and high pressure sintering10.1016/j.ijrmhm.2016.07.013 ↗
15. The effect of submicron-sized initial tungsten powders on microstructure and properties of infiltrated W-25wt.% Cu alloys10.1016/j.ijrmhm.2016.05.014 ↗
16. Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process10.1016/j.ijrmhm.2016.06.002 ↗
17. Influences of microstructure on macroscopic crystallinity and magnetic properties of Sm-Fe-N fine powder produced by jet-milling10.1016/j.jallcom.2021.159288 ↗
18. Effects of jet milling on W-10 wt.%Cu composite powder for injection molding10.1016/j.jmrt.2020.05.107 ↗
19. Particle size distribution control and related properties improvements of tungsten powders by fluidized bed jet milling10.1016/j.apt.2017.04.002 ↗
20. Injection molding of tungsten powder treated by jet mill with high powder loading: a solution for fabrication of dense tungsten component at relative low temperature10.1016/j.ijrmhm.2016.10.015 ↗
21. Porous structure uniformity investigation of tungsten matrix prepared by jet milled and annealed tungsten powder10.1016/j.powtec.2018.08.021 ↗
22. Anisotropic, single-crystalline SmFe12-based microparticles with high roundness fabricated by jet-milling10.1016/j.jallcom.2019.06.365 ↗
23. Effect of jet milling on micro-strain behavior and rupture behavior of agglomerates of ultrafine WC powders10.1016/S1003-6326(19)65119-8 ↗
24. Preparation of a high-purity ultrafine α-Al2O3 powder and characterization of an Al2O3-coated PE separator for lithium-ion batteries10.1016/j.powtec.2017.07.027 ↗
25. Effects of jet milling on W–10 wt.% Cu composite powder for injection molding10.1016/j.jmrt.2020.05.107 ↗
26. Ultra-uniform nanocrystalline materials via two-step sintering10.1002/adfm.202007750 ↗
27. Elaborating the Cu-network structured of the W–Cu composites by sintering intermittently electroplated core-shell powders10.1016/j.jallcom.2018.08.158 ↗
28. A model for the thermal properties10.1007/BF02657849 ↗