摘要
采用熔铸-原位合成法制备了TiC/7075复合材料,并对其腐蚀性能进行了研究。结合电化学方法和盐雾腐蚀试验研究了原位合成TiC颗粒对TiC/7075复合材料在3.5%NaCl水溶液中腐蚀性的影响,作为比较,对7075铝合金的腐蚀性能也做了相应研究。结果表明,TiC/7075复合材料较基体7075铝合金在3.5%NaCl水溶液有较大的腐蚀敏感性,该复合材料腐蚀加速的原因是TiC与Al间以及富Cu相与贫Cu相间的电偶腐蚀。
The TIC/7075 composite was synthesized by melt in-situ reaction method and the corrosive properties of the composite were studied. The influences of in-situ TiC particles reinforcements on the corrosion characteristics of TIC/7075 composite in 3.5%NaCl aqueous solution were investigated with electrochemical method and salt spray test. The corrosive nature of 7075 alloy was also investigated for comparison. The results show that TIC/7075 composite are more susceptible to corrosion than its matrix alloy in 3.5%NaCl aqueous solution. The reasons to increase the speed of eroding the composite materials are the galvanic corrosions between TiC particles and Al matrix or between copper-rich phases and copper-poor phases.
出处
《热加工工艺》
CSCD
北大核心
2012年第8期112-116,共5页
Hot Working Technology
