陈枭,王洪涛,张晓敏,段小华,范亚乔,关晓晓

• 1:九江市绿色再制造重点实验室
• 2:九江学院机械与材料工程学院

摘要(Abstract)：

通过机械合金化球磨方式制备Ti B2硬质相和Co粘结相质量比为3:1的Ti B2-25Ni金属陶瓷复合粉末,采用超音速火焰喷涂技术在Q235钢基体表面制备了3种不同氧气流量的Ti B2-25Ni涂层,通过扫描电子显微镜、X射线衍射表征涂层的微观组织形貌和物相结构,采用显微硬度计测量涂层硬度值,并对涂层的抗热震性能、耐熔融铝硅腐蚀性能和耐磨粒磨损性能进行研究。结果表明,3种涂层组织致密,呈典型的层状结构;涂层的主要物相均为Ti B2和Ni;3种涂层的显微硬度值分别为(408±87)HV0.3、(513±90)HV0.3和(553±77)HV0.3;经过热震试验发现,氧气流量为462 L/min的试样具有最佳的抗热震性能;经过60 h熔融铝硅腐蚀试验发现,3种涂层试样均具有良好的耐腐蚀性,其中以氧气流量为462 L/min的试样最佳。在磨粒磨损试验中发现,氧气流量为462 L/min的涂层试样的耐磨性比基体提高近6倍。

关键词(KeyWords)： 超音速火焰喷涂;TiB2-25Ni涂层;显微组织;腐蚀;磨损

Abstract:

Keywords:

基金项目(Foundation): 江西省自然科学基金(20132BAB216014);; 江西省教育厅科技项目(GJJ12610,GJJ14723,GJJ13721);; 九江学院校级科研项目(2013KJ12);; 江西省十二五重点学科“材料加工工程”资助

作者(Author): 陈枭,王洪涛,张晓敏,段小华,范亚乔,关晓晓

DOI: 10.13289/j.issn.1009-6264.2014.s2.040

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