摘要
采用化学镀方法对SiC粒子表面镀镍,研究了镀镍对SiCp/Fe复合材料力学性能的影响。结果表明:镍盐量与还原剂量为1:3、温度为93-95℃时,镍盐可以近100%镀在SiC粒子表面,控制镍盐加入量可控制镀层的厚度.SiC表面镀镍的粒度为45μm、体积分数为10%的复合材料,其抗拉强度最大提高22.9%。SiC表面镀镍的SiC粒度为21μm、体积分数为15%时,复合材料的延伸率提高近30%.
SiCp were nickel-plated by means of chemical deposition to investigate the effects of the plating treatment on mechanical properties of SiCp/Fe composites. It was found that the coating thickness on SiCp can be controlled by amount of total input nickel chloride in the chemical solution. When the molar ratio of the nickel chloride versus hypophosphite is 1：3 and the temperature is within 93–95℃, the reduction of nickel chloride on the surface of the particles approaches to near 100%. When SiCp size is 45μm and the volume fraction is 10%, tensile strength of the composite is the best increased by 22.9%. After SiC particle surface nickel plated, the final elongation of SiCp/Fe composite is also improved significantly. The elongation is increased up to 30% with the plating when the particle size is 21μm and the volume fraction is 15% for nickel plated.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2012年第5期483-488,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金51171040和50771028资助项目~~
关键词
复合材料
化学镀
铁基复合材料
SIC
动态热压烧结
composites, chemical surface deposit, metal matrix composites, SiC, dynamic hot press
