Velocity and Temperature of In-Flight Particles and Its Significance in Determining the Microstructure and Mechanical Properties of TBCs

论文摘要

The correlation between particle in-flight parameter, defect content and mechanical property of yttria-stabilized zirconia coating was systematically studied in the present work. The melting state of in-flight particle during spraying was simulated using computational fluid dynamics. The results suggested that, with the increase of velocity and temperature of in-flight particles in the plasma jet, the particles changed from partially melted state to fully melted one. As a result, the total defect content of as-sprayed coating gradually decreased, while elastic modulus and microhardness increased correspondingly. However, the fracture toughness of as-sprayed coating reached a maximum value when the total defect content reached approximately 9.1%.

论文目录

• 1 Introduction
• 2 Experimental
•   2.1 Materials
•   2.2 Plasma Spraying Process
•   2.3 Interaction Between Plasma Jet and In-Flight Particles
•   2.4 Specimen Characterization
•   2.5 Microhardness and Weibull Analysis
• 3 Results and Discussion
•   3.1 Analysis of Plasma Jet and Melting State of In-Flight Particles
•   3.2 Microstructure of As-Sprayed Coating
•   3.3 Microhardness and Weibull Plots
•   3.4 Elastic Modulus and Fracture Toughness
• 4 Conclusions

文章来源

类型: 期刊论文

作者: Lei Zhang,Tao He,Yu Bai,Fang-Li Yu,Wei Fan,Yu-Shan Ma,Zhan-Dong Chang,Hai-Bo Liu,Ben-Qiang Li

来源: Acta Metallurgica Sinica(English Letters) 2019年10期

年度: 2019

分类: 工程科技Ⅰ辑,工程科技Ⅱ辑

专业: 金属学及金属工艺,动力工程

单位: State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Wuzhong Instrument Co. Ltd,School of Materials Engineering,Xi'an Aeronautical University,Department of Mechanical Engineering,University of Michigan

基金: supported by the Collaborative Innovation Center of Advanced Control Valve Project (Grant No. WZYB-XTCX-001)

分类号: TG174.4;TK471

页码: 1269-1280

总页数: 12

文件大小: 10129K

下载量: 3