| 对称切口拉伸法评价高强度涂层及平面应力有限元分析 |
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| 引用本文： | 周伟,张晓霞,金海波. 对称切口拉伸法评价高强度涂层及平面应力有限元分析[J]. 材料保护, 2009, 42(12) |
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| 作者姓名： | 周伟 张晓霞 金海波 |
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| 作者单位： | 河北大学质量技术监督学院,河北,保定,071002;河北大学图书馆,河北,保定,071002;北京理工大学材料科学与工程学院,北京,100081 |
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| 基金项目： | 国家自然科学基金，河北大学博士基金 |
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| 摘 要： | 由于粘胶结合强度的限制,常规拉伸法不能用于评价高强度涂层.利用对称切口拉伸的方'法,评价了不同喷涂和烧结工艺所得高强度涂层与基体的结合性能.结果表明,涂层与基体切口尖端的应力集中作用,使交界面产生裂纹并迅速扩展,导致涂层界面开裂.对应不同切口结构工艺参数,采用平面应力有限元对涂层/基体交界面上的应力分布进行了力学计算.结果表明:楔形切口和深U形切口两种情形下对涂层/基体交界面应力分布影响不大;沿界面方向的应力对涂层破坏有加速作用,切口尖端应力集中随切口切割深度的增大而减小.
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| 关 键 词： | 高强度涂层 结合强度 对称切口拉伸 应力分布 有限元分析 |
Evaluation of Adhesion Strength of High-Strength Coating by Symmetrical-Incision Tensile Testing and Analysis of Its Plane Stress bv Finite Element Method |
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| ZHOU Wei,ZHANG Xiao-xia,JIN Hai-bo. Evaluation of Adhesion Strength of High-Strength Coating by Symmetrical-Incision Tensile Testing and Analysis of Its Plane Stress bv Finite Element Method[J]. Journal of Materials Protection, 2009, 42(12) |
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| Authors: | ZHOU Wei ZHANG Xiao-xia JIN Hai-bo |
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| Affiliation: | ZHOU Wei1,ZHANC Xiao-xia2,JIN Hai-bo3(1.College of Quality , Technology Supervision,Hebei University,Baoding 071002,China,2.Library of Hebei University,3.School of Materials Science , Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Because of low bonding strength of glue,conventional stretching method cannot be used to evaluate the adhesion strength of high-strength coatings.Thus a symmetri-cal-incision tensile test method was used to evaluate the adhesion strength of hard coatings obtained under various spraying condi-tions and sintering parameters.At the same time,the stress dis-tributions on the interfaces of coating/substrate were studied by u-sing plane stress finite element method,where various structural parameters of cracks we... |
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| Keywords: | high-strength coating adhesion strength symmetrical-cut tensile stress distribution,finite element analysis |
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