普通渗碳剂与新型高聚物渗碳剂进行NiTi合金固体渗碳的对比  

COMPARISON BETWEEN NORMAL AND POLYMER CEMENTATION AGENT USED IN SOLID CARBURIZING ON NiTi ALLOY

作　　者：姜训勇[1] 高学平[1] 宋德瑛[1] 

机构地区：[1]南开大学新能源材料研究所

出　　处：《金属学报》2003年第9期962-966,共5页Acta Metallurgica Sinica

摘　　要：采用通用渗碳剂和新型高聚物渗碳剂,通过固态渗碳法对NiTi合金进行了表面处理.结果表明,采用两种渗碳剂在NiTi合金表面均可以获得TiC+TiOx两相构成的钛化物渗层.与通用渗碳剂相比,聚合物渗碳具有渗速快、组织致密、渗层相结构均匀、硬化层中TiC含量增加、钛化物层与基体的结合良好等特点.经过固体渗碳处理后, NiTi合金在3.5％NaCl溶液中的抗腐蚀性能得到了很大提高,高聚物渗碳的保护作用更为显著.The coating of NiTi alloy treated by solid carburizing with normal and polymer cementation agent is composed with TiC and TiOx phases. Advantage of carburizing with polymer cementation agent is high carburizing rate, dense and homogenous hard layer, obvious increase of TiC content in hard layer, and good bonding between coating and matrix. Corrosion resistance in 3.5% NaCl solution for NiTi alloy after carburizing treatment is improved greatly compared with untreated one, specially, the protective effect of polymer carburizing is more obvious.

关 键 词：NITI合金 固体渗碳 聚合物 渗碳剂 腐蚀 

分 类 号：TG146[一般工业技术—材料科学与工程] TG156.81[金属学及工艺—金属材料]