正交试验法优化大气等离子喷涂Al_2O_3-13wt.%TiO_2涂层的工艺参数

Optimization of atmospheric plasma spray process parameters by orthogonal experimental design for Al_2O_3-13wt.%TiO_2 coating

基于涂层显微硬度和磨损抗力,利用正交试验设计方法对45号钢基体表面等离子喷涂Al2O3-13wt.%TiO2(AT13)涂层的工艺参数进行优化.在保持喷涂距离80 mm、送粉量2.4 kg.h-1的条件下,研究了工艺参数主气流量(氩气)、电弧电流、电弧电压对涂层性能的影响.结果表明,主气流量是影响涂层组织、性能的最主要因素,电流、电压次之.在本试验条件下,喷涂AT13陶瓷涂层的优化工艺参数为:主气流量45 slm,电流550 A,电压65 V.

Plasma spray process parameters for Al2O3-13wt.%TiO2（AT13） ceramic coating on AISI1045 steel substrate were optimized by orthogonal experimental design based on microhardness and wear resistance of the coating.For the spraying distance of 80 mm,the powder feed rate of 2.4 kg·h-1,orthogonal experimental design method was used to study the influence of primary gas（Ar） flow rate,arc current and arc voltage on the properties of coating.The results indicate that primary gas flow rate is the most influential factor for microstructure and properties of the coating,the optimized spray parameters are primary gas flow rate of 45 slm,arc current of 550 A,arc voltage of 65 V.