陈枭,纪岗昌,王洪涛,白小波,王玉伟

• 1:九江学院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)：

通过机械合金化技术制备出TiB2-50Ni粉末,采用超音速火焰喷涂方法在Q235钢表面制备TiB2-50Ni涂层,研究3种不同喷涂参数对涂层组织结构和性能的影响。运用扫描电镜分析了涂层的组织结构、X射线衍射表征涂层的物相结构,用压入法测定了涂层的显微硬度,并对涂层的抗热震性能和耐熔融铝硅腐蚀性能进行研究。结果表明,涂层均具有致密的组织结构,其中以氧气流量10~11 m3/h和氮气流量1100~1200 L/min喷涂参数下(No.3)的涂层试样的孔隙率最低和厚度最厚;涂层的主要物相与粉末相同;No.1~No.3号涂层试样的硬度值分别为(321.19±17.1)HV0.3、(464.84±49.2)HV0.3和(597.92±36.1)HV0.3;涂层均具有较好的抗热震性能,其中以3号涂层试样最佳;经过120 h熔融铝硅腐蚀后发现,涂层均具有良好的抗熔融铝硅腐蚀性能,3号涂层试样具有最好的耐腐蚀性能。

关键词(KeyWords)： TiB2-50Ni;超音速火焰喷涂;显微组织;硬度;腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50961007,51001056);; 江西省自然科学基金项目(20114BAB206019,2010GQC0117);; 江西省教育厅科技项目(GJJ12610,GJJ12622);; 江西省“十二五”重点学科“材料加工工程”资助

作者(Author): 陈枭,纪岗昌,王洪涛,白小波,王玉伟

DOI: 10.13289/j.issn.1009-6264.2013.11.029

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