摘要
利用SAS-Ⅱ型超音速电弧喷涂设备、工业级钛、铝丝材在LY12铝合金基体上制备了钛铝复合涂层,通过均匀设计方法实验研究了超音速电弧喷涂工艺参数对涂层表面粗糙度(Ra)的影响规律。结果表明:在一定的雾化条件下,随喷涂电压的增大,涂层的Ra逐渐增大,当电压增至32V时,Ra达到最高值,此后,随喷涂电压的继续增大,Ra逐渐下降;随喷涂距离的增大,涂层的Ra逐渐降低,当喷涂距离增至一定程度时,涂层的Ra降到最小值,随喷涂距离的继续增大,涂层的Ra又逐渐增大;随喷涂电流的增大,涂层的Ra呈线性增大的趋势。涂层Ra最小的超音速电弧喷涂工艺参数:喷涂电压为20V,喷涂电流为20A,喷涂距离为0.242m。
The dependence of the surface roughness （Ra） of Ti-Al composites coatings which were fabricated by ultrasonic arc spray equipments of model SAS-Ⅱ , commercial titanium and aluminum wires, on spraying parameters was studied by uniform experiment design method. The optimum spraying parameters were determined for minimum surface roughness of coatings. The results showed that the Ra of coatings increased with increased spraying voltage under a certain atomization conditions, as the spraying voltage was equal to 32V, R. achieved maximum value, but afterwards, the R. of coatings decreased with the increased spraying voltage; the R. of coatings increased with increased spraying current; the R, of coatings decreased with increased spraying distance, as the spraying distance reached to certain value, the R. of coatings descended to the lowest point, henceforth Ra of coatings increased with increased spraying distance. The optimum ultrasonic arc spraying parameters were 20V, 20A and 0. 242m respectively for coatings with minimum R. value.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2006年第8期12-14,19,共4页
Journal of Materials Engineering
