Study on the Effect of Value of the Current on Synthesis of W-C-Co Composites under an Electric Field

摘要：

Using Gleele-1500D thermal simulation instrument, the effect of value of the current on synthesis of W-C-Co composites was investigated. It was shown that the nature of combustion products depended on the magnitude of the current intensity and the electric field was not only providing the Joule heat for a compact, but also accelerating the diffusion among atoms in the synthesis process. X-ray and microscopic analysis of combustion products suggest that the solid state reaction takes place at a relatively lower temperature by passing through the samples with current intensities between 20000 A and 30000 A. Moreover, as the current increases, the TTE becomes lower. At the same time, the relative strength of WC diffraction peaks in XRD diagram increases while that of W2C decreases.

关键词： Reactive sintering Solid state reactions W-C-Co composites Diffusion

作者: Yang Song Yang Yi Liu Jian

作者单位: School of Manufacturing Science and Engineering,Sichuan University,Sichuan,China

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 208-212

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）