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Element Analysis of Ceramic Coatings under Spherical Indentation with Metallic Interlayer: PartⅡRing Crack 被引量：1

Element Analysis of Ceramic Coatings under Spherical Indentation with Metallic Interlayer: PartⅡRing Crack
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摘要 Spherical indentation of ceramic coatings with metallic interlayer was performed by means of axisymmetric finite element analysis （FEA）. Two typical ceramic coatings with relatively high and low elastic modulus deposited on aluminum alloy and carbon steel were considered. The fracture mechanics of the ceramic coatings mechanisms due to occurrence of surface ring cracks extending traverse the coating thickness under spherical indentation are investigated within the framework of linear fracture mechanics. The J-integral associated to such cracks was computed. The evolution of J-integral vs the crack length and the indentation depth was studied. The effects of the interlayer, the coating and the substrate on the J-integral evolution were discussed. The results show that a suitable metallic interlayer can improve the fracture resistance of the coating systems under the same indentation conditions through reducing the J-integral. Spherical indentation of ceramic coatings with metallic interlayer was performed by means of axisymmetric finite element analysis （FEA）. Two typical ceramic coatings with relatively high and low elastic modulus deposited on aluminum alloy and carbon steel were considered. The fracture mechanics of the ceramic coatings mechanisms due to occurrence of surface ring cracks extending traverse the coating thickness under spherical indentation are investigated within the framework of linear fracture mechanics. The J-integral associated to such cracks was computed. The evolution of J-integral vs the crack length and the indentation depth was studied. The effects of the interlayer, the coating and the substrate on the J-integral evolution were discussed. The results show that a suitable metallic interlayer can improve the fracture resistance of the coating systems under the same indentation conditions through reducing the J-integral.
作者 Minh-Quy LE Seock-Sam KIM
机构地区 Department of Mechanics of Materials & Structures Faculty of Mechanical Engineering School of Mechanical Engineering Kyungpook National University
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2006年第5期594-598,共5页 材料科学技术（英文版）
关键词 Finite element analysis Ceramic coatings INDENTATION INTERLAYER CRACK Finite element analysis Ceramic coatings Indentation Interlayer Crack
分类号 TG174 [金属学及工艺—金属表面处理]
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参考文献15

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同被引文献15

  • 1SUNG J C, KAN M C, SUNG M. Fluorinated DLC for tribo-logical applications [J].International Journal of Surface Sci-ence and Engineering,2007,1(4) :429*440.
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Journal of Materials Science & Technology
2006年 第5期

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