| 超声速等离子喷涂氧化锆粒子时的加热熔化特性分析 |
| |
| 引用本文： | 赵伟涛,吴九汇,白宇,韩志海.超声速等离子喷涂氧化锆粒子时的加热熔化特性分析[J].西安交通大学学报,2012(1):97-102. |
| |
| 作者姓名： | 赵伟涛 吴九汇 白宇 韩志海 |
| |
| 作者单位： | 西安交通大学机械工程学院;西安交通大学金属材料强度国家重点实验室 |
| |
| 基金项目： | 国家“973计划”资助项目(2007CB707702);高等学校博士学科点专项科研基金资助项目(20090201120047) |
| |
| 摘 要： | 应用格林函数法求解超声速等离子喷涂(SAPS)过程中氧化钇稳定二氧化锆(YSZ)粒子的加热熔化时间问题,得到了一个解析解;对SAPS过程中粒子熔化时间和熔化界面推移情况进行了数值模拟,所得结果与实验结果相符.熔化过程的模拟结果显示:粒子的初始温度对熔化速率有一定的影响,喷涂前预热粒子可以加快它的熔化;减小粒子半径可以缩短粒子的熔化时间,提高粒子的扁平化程度.在SAPS过程中,通过过筛控制粒子半径有助于获得结构精细、致密的典型细密柱晶组织.
|
| 关 键 词： | 超声速等离子喷涂 氧化钇稳定二氧化锆粒子 格林函数 熔化时间 |
Heating and Melting State of YSZ Particles in Supersonic Atmospheric Plasma Spraying |
| |
| ZHAO Weitao,WU Jiuhui,BAI Yu,HAN Zhihai.Heating and Melting State of YSZ Particles in Supersonic Atmospheric Plasma Spraying[J].Journal of Xi'an Jiaotong University,2012(1):97-102. |
| |
| Authors: | ZHAO Weitao WU Jiuhui BAI Yu HAN Zhihai |
| |
| Institution: | 1.School of Mechanical Engineering,Xi′an Jiaotong University,Xi′an 710049,China; 2.State Key Laboratory for Mechanical Behavior of Materials,Xi′an Jiaotong University,Xi′an 710049,China) |
| |
| Abstract: | Yttria-stabilized zirconia(YSZ) based thermal barrier coatings(TBCs) are deposited by high efficiency supersonic atmospheric plasma spraying(SAPS) system.The phase change time in heating and melting of the particles in SAPS process is analytically gained with Green’s function method,which gets relatively close to the experimental data.And the moving process of solid-liquid interface within a particle is clearly revealed.The heating and melting process is numerically simulated,and the effect of initial temperature on particle melting rate is observed.Pre-heating before spraying can accelerate melting.The melting time of the particle can be shortened and the flattening degree can be increased by reducing the particle radius.The particle radius can be controlled by sifting to fabricate a fine and compact structure with columnar grains. |
| |
| Keywords: | supersonic atmospheric plasma spraying yttria-stabilized zirconia particle Green’s function melting time |
| 本文献已被 CNKI 等数据库收录！ |
