等离子喷涂T800钴基合金涂层的研究  

Study of plasma sprayed T800 Co-based alloy coating

作　　者：朱朝刚 张建新[1] 燕翙江 卜丽静[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《河北工业大学学报》2017年第1期77-82,共6页Journal of Hebei University of Technology

摘　　要：采用等离子喷涂技术制备T800钴基合金涂层.使用多晶X射线衍射仪和扫描电子显微镜对涂层组织结构进行了研究,并通过显微硬度测试、常温磨损性能测试实验、400℃磨损性能测试实验评价了涂层的硬度和耐磨性能.实验表明,等离子喷涂T800钴基合金涂层致密且含有Laves强化相.28~32 kW喷涂功率范围内,涂层含有Co与Co_3Mo_2Si,而在超过32 kW喷涂功率下涂层开始出现另一种Laves相CoMoSi.所制备涂层的磨损机理为磨粒磨损和疲劳磨损.The T800 Co-based alloy coating was prepared by plasma spraying technique. The microstructure of the coating was analyzed by XRD and SEM. Hardness test, room temperature and 400 ℃ wear tests were taken to value the hardness, wear resistance. Plasma sprayed T800 Co-based alloy coating is dense and contains Laves strengthening phase.Under 28 ~32 kW three groups of spraying power, all three coatings contain Co and Co3Mo2 Si and under 32 kW the coating starts to appear another Laves phase CoMoSi. The main wearing mechanism of the coating is abrasive wear and fatigue wear.

关 键 词：等离子喷涂 钴基合金涂层 LAVES相 涂层显微硬度 CO 磨损机制 

分 类 号：TB333[一般工业技术—材料科学与工程]