摘要
为了研制一种新型的连铸结晶器涂层材料,采用超音速等离子喷涂技术在Cr Zr Cu基体表面制备Zr O2-Mo Si2/Co Ni Cr Al Y复合涂层。通过SEM、XRD和EDS等分析测试手段对涂层的微观组织、形貌及物相组成进行表征,并利用摩擦磨损试验机对Zr O2-Mo Si2涂层与Ni Co电镀层的耐磨性能进行比较。结果表明:超音速等离子喷涂可形成熔化或半熔化状态的致密层状结构组织,涂层主要由Mo Si2、Zr O2、Mo5Si3和少量的单质Mo相组成,相对于Ni Co电镀层,Zr O2-Mo Si2涂层的摩擦磨损性能提高了近5倍。
In order to develop a high performance coating for continuous casting mould, ZrO2-MoSi2/CoNiCrAlY composite coatings were prepared on CrZrCu substrate surface by supersonic plasma spraying. Microstructure, morphology and phase composition of the coating were characterized by SEM, XRD and EDS, respectively. The abrasive resistance of the ZrO2-MoSi2 coating comparing with NiCo electroplated coating was conducted by using friction and wear testing machine. The results show that supersonic plasma spraying can form dense layered structure in molten or semi-molten state, and the ZrO2-MoSi2 coating is mainly composed of MoSi2, ZrO2, Mo5 Si3 and small amounts of native static Mo. Compared with NiCo eleetroplated coating, the abrasive resistance of the ZrO2-MoSi2 coating is increased by 5 times.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第8期83-87,共5页
Heat Treatment of Metals
基金
西安交通大学金属材料强度国家重点实验室开放课题基金(20131314)
陕西省冶金工程重点学科资助
