Fast Welding of Chromium Carbide and Nickel Alloy by Spark Plasma Sintering

被引：2
|
作者：
Liu Guoxi [1 ,2 ]
Li Kezhi [1 ]
Leng Xiaoxuan [3 ]
Zhang Jinyong [3 ]
Zhang Fan [3 ]
机构：
[1] Northwestern Polytech Univ, Sch Mat Sci, Xian 710072, Peoples R China
[2] Ordnance Sci Inst China, Ningbo Branch, Yantai 264003, Peoples R China
[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2016年 / 31卷 / 04期
基金：
中国国家自然科学基金;
关键词：
SPS; welding; Cr3C2; Ni; SPS;
D O I：
10.1007/s11595-016-1455-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spark plasma sintering (SPS) was used to weld the ceramics, eg, Cr3C2 and metal, Ni in this paper. It is found that the SPS can weld the Cr3C2 and Ni plates at lower temperatures and shorter holding time comparing with that of hot-pressing (HP). The binding strength was 113 MPa when the temperature was 1000 degrees C by SPS, compared with 10 MPa by HP at the same temperature. SPS remarkably enhances the atom diffusion in welding. Thermodynamics analysis at different welding temperatures and holding times of SPS or HP shows that the local temperature gradient, different from the past effects of by-passing current, is the dominative mechanism of the SPS welding.
引用
收藏
页码：835 / 837
页数：3
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