期刊
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
卷 20, 期 12, 页码 1208-1213出版社
SPRINGER
DOI: 10.1007/s12613-013-0856-7
关键词
metallic matrix composites; microstructure; mechanical properties; chromium; ferrochrome; sintering
类别
资金
- Key Project of the National Eleventh-Five Year Research Program of China [2009BAG12A07]
Copper matrix composites consisting of chromium (Cr) or ferrochrome (Cr-Fe) as strengthening elements and molybdenum disulfide as a lubricant had been sintered in nitrogen and hydrogen atmosphere, respectively. Their morphology and energy-dispersive X-ray spectrometry (EDS) analysis showed that serious interaction occurred between MoS2 and Cr (or Cr-Fe) particles when the samples were sintered in hydrogen atmosphere. Chromium sulfide compound (CrxSy) was formed as a reaction product, which decreased the density and strength of the composites remarkably. This interaction was inhibited when the samples were sintered in nitrogen atmosphere; thus, the mechanical properties of the composites were improved.
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