反应火焰喷涂TiC-Ni功能梯度涂层温度场和残余应力场数值模拟  

Numerical Simulation of Temperature Field and Residual Stress Field for Reactive Flame Spraying Synthesis TiC-Ni Function Gradient Coating

作　　者：陈威[1] 张磊[1] 汤秀山[1] 郭强[1] 

机构地区：[1]装甲兵工程学院机械工程系,北京100072

出　　处：《热加工工艺》2009年第6期98-100,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50575226)

摘　　要：详细介绍了利用自蔓延反应火焰喷涂技术在钢板表面制备TiC-Ni功能梯度涂层工艺。建立了计算TiC-Ni功能梯度涂层温度场及应力场的数学模型和反应喷涂涂层结构的物理模型。采用有限元分析软件分析了自蔓延反应喷涂层沉积过程中温度场及残余应力场的分布,深入分析了实验条件对涂层温度场的影响。同时,对沿涂层厚度方向残余应力变化规律进行了模拟,并通过模拟检验了利用该方法制备的功能梯度涂层的残余应力的连续性和缓和性,并对不同喷涂速度条件下涂层残余应力场进行了模拟与比较。结果表明,不同喷涂速度对残余应力场的分布影响不大。The technology process of TiC-Ni functional gradient coating prepared by reactive flame spraying was introduced. The mathematical models and the physical models for temperature field and stress field of TiC-Ni functional gradient coating were built. The distribution of temperature field and residual stress field during the deposition process was analysed using finite element analysis software. The effects of experiment conditions on the temperature field was analysed. Meanwhile, the continuity and the thermal relaxation of the coating were checked through analysing the residual stress changing along the direction of the coating thickness. Different residual stress fields in different spraying speeds were simulated and compared. The results show that different spraying speeds affect little the distribution of stress field.

关 键 词：数值模拟 功能梯度涂层 温度场 残余应力场 反应喷涂 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]