| 喷砂预处理对HVOF喷涂TiAl-Nb/NiCrAl涂层结合强度的影响 |
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| 引用本文： | 张来启,张少杰,曾红杰,林均品,陈国良.喷砂预处理对HVOF喷涂TiAl-Nb/NiCrAl涂层结合强度的影响[J].材料热处理学报,2011,32(12). |
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| 作者姓名： | 张来启 张少杰 曾红杰 林均品 陈国良 |
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| 作者单位： | 北京科技大学新金属材料国家重点实验室,北京,100083 |
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| 基金项目： | “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) |
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| 摘 要： | 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。
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| 关 键 词： | 喷砂 HVOF TiAl-Nb 结合强度 |
Effect of grit blasting pre-treatment on bond strength of TiAl-Nb/NiCrAl coatings sprayed by high velocity oxyfuel |
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| ZHANG Lai-qi,ZHANG Shao-jie,ZENG Hong-jie,LIN Jun-pin,CHEN Guo-liang.Effect of grit blasting pre-treatment on bond strength of TiAl-Nb/NiCrAl coatings sprayed by high velocity oxyfuel[J].Transactions of Materials and Heat Treatment,2011,32(12). |
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| Authors: | ZHANG Lai-qi ZHANG Shao-jie ZENG Hong-jie LIN Jun-pin CHEN Guo-liang |
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| Affiliation: | ZHANG Lai-qi,ZHANG Shao-jie,ZENG Hong-jie,LIN Jun-pin,CHEN Guo-liang(State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | Grit blasting pre-treatment on substrate surface of SUS316L stainless steel was carried out by changing the grit blasting pressure.Variation of the substrate surface state and its influence on bond strength of high velocity oxy-fuel sprayed(HVOF) TiAl-Nb/NiCrAl coatings were studied.The results show that substrate surface roughness,width and depth of pits on substrate surface,pores at the interface between substrate and NiCrAl coating,and area fraction of residual grits on the surface all increase with incr... |
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| Keywords: | grit blasting HVOF TiAl-Nb bond strength |
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