Effects of sintering temperature on W-Mo-Cu alloy prepared by large current electric field sintering

被引：2

作者：

Liu Yan-fang ^{[1
]}

Feng Ke-qin ^{[1
]}

Zhou Hong-ling ^{[1
]}

Ke Si-xuan ^{[1
]}

机构：

[1] Sichuan Univ, Sch Mech Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2019年 / 47卷 / 11期

关键词：

electric flied; W-Mo-Cu alloy; sintering temperature; densification; performance;

D O I：

10.11868/j.issn.1001-4381.2018.001160

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The W-Mo-Cu alloy was rapidly prepared by a large current electric field sintering method at 875-1000 degrees C. Effect of sintering temperature on microstructure, hardness and electrical conductivity was investigated. Based on the dimensional change during alloy sintering, the sintering characteristic index was obtained by fitting calculation, and the main migration mechanism of W-Mo-Cu alloy during sintering was inferred. The results show that the pores of the W-Mo-Cu alloy decrease, the relative density, microhardness and electrical conductivity increase at the same time with the increase of sintering temperature at 875-975 degrees C. When the sintering temperature is between 875 degrees C and 925 degrees C, the densification of the alloy is mainly caused by plastic deformation instead of sintering; when the sintering temperature is higher than 925 degrees C, the order of the main migration mechanism experienced during the densification of W-Mo-Cu alloy is plastic flow, volume diffusion, grain boundary diffusion and surface diffusion.

引用

页码：135 / 140

页数：6

共 18 条

[1] CAI BX, 1990, SOLID PHYS FDN, P420
[2] Recent progress in development of tungsten-copper composites: Fabrication, modification and applications
Dong, L. L.
Ahangarkani, M.
Chen, W. G.
Zhang, Y. S.
[J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2018, 75 : 30 - 42
[3] Sintering process and particles migration mechanism of rapid sintering of W-Cu composites
Ke, Sixuan
Feng, Keqin
Zhou, Hongling
Shui, Yue
[J]. MATERIALS AND MANUFACTURING PROCESSES, 2017, 32 (12) : 1398 - 1402
[4] Li Ya, 2010, Electronic Components & Materials, V29, P4, DOI 10.3969/j.issn.1001-2028.2010.01.002
[5] LIANG R H, 1997, MINING METALLURGICAL, V17, P73
[6] Effects of Ag addition on electrical and thermal properties of Mo-Cu composites
Sun, Aokui
Wu, Zhuangzhi
Dong, Xiaojia
Duan, Bohua
Wang, Dezhi
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 657 : 8 - 11
[7] Five new species of the Stenus indubius group (Coleoptera, Staphylinidae) from China
Tang, Liang
Li, Li-Zhen
[J]. ZOOKEYS, 2012, (165) : 1 - 20
[8] Tang LL., 2011, POWDER METALL IND, V21, P6
[9] Research Progress in Electrically Conductive Structural Composites
Wang Cheng-cheng
He De-long
Cui Yi
[J]. CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING, 2018, 46 (09): : 1 - 13
[10] WANG PX, 1997, POWDER METALL, P260

← 1 2 →