张来启,张少杰,曾红杰,林均品,陈国良

• 1:北京科技大学新金属材料国家重点实验室

摘要(Abstract)：

采用不同的喷砂压力对基体表面进行喷砂预处理,研究了基体表面状态的变化对HVOF喷涂TiAl-Nb/NiCrAl涂层结合强度的影响。结果表明:随着喷砂压力的增大,基体粗糙度及表面凹坑的深度和宽度增大,NiCrAl层与基体结合界面处孔洞等缺陷增多,同时基体表面残余砂粒的面积分数增加;涂层结合强度随基体粗糙度的增大,先增大后减小,当基体粗糙度为8.33μm时,结合强度达到最大值44.5 MPa。

关键词(KeyWords)： 喷砂;HVOF;TiAl-Nb;结合强度

Abstract:

Keywords:

基金项目(Foundation): “973”计划课题(2011CB605502);; 国家自然科学基金(50871127);; 北京科技大学新金属材料国家重点实验室自主研究课题(2008Z-05)

作者(Author): 张来启,张少杰,曾红杰,林均品,陈国良

DOI: 10.13289/j.issn.1009-6264.2011.12.021

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