Microstructural Evolution and Mechanical Properties of Vertical-Cracked Thermal Barrier Coatings in Thermal Exposure

摘要：

　　The effects of intrinsic feature of feedstock in air plasma-sprayed (APS) coatings on the microstructure and mechanical properties of vertical-cracked thermal barrier coatings (TBCs) were investigated in thermal exposure.The microstructure after the thermal exposure for 400 h is densified,while after the thermal exposure for 800 h various defects such as interlamellar cracks and the vertical and horizontal cracks are newly developed,even though the total porosity is decreased.The microstructure of the TBC prepared with 204 C-NS is more porous than that of the TBC with 204NS,showing higher mechanical properties and better thermal stability in the TBC with 204 NS.

关键词： Air plasma-sprayed coating Feedstock Vertical crack Thermal barrier coating Thermal exposure

作者: Zhe Lu Sang-Won Myoung Tae-Sik Jang Kang-Hyeon Lee Je-Hyun Lee Yeon-Gil Jung Ungyu Paik

作者单位: School of Nano & Advanced Materials Engineering,Changwon National University,Changwon,Kyungnam 641-7 Department of Energy Engineering,Hanyang University,Seoul 133-791,Republic of Korea

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1040-1044

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）