电弧超声对改善电弧喷涂雾化效果的研究  

Improvement of Atomization Effect in Arc-Spraying by Arc-Ultrasonic

作　　者：杜敬磊[1] 吴敏生[1] 张雁军[1] 

机构地区：[1]清华大学机械工程系材料加工及自动化研究所,北京100084

出　　处：《材料保护》2002年第11期1-2,共2页Materials Protection

基　　金：国家自然科学基金项目 ( 597750 61)

摘　　要：把电弧超声方法引入到喷涂领域 ,对电弧喷涂的热源施加高频调制之后 ,喷涂电弧可以激发出超声波。超声波的空化效应、机械效应和热效应加强了喷涂材料的雾化效果。从能量的角度研究了电弧超声的应用使喷涂粒子的粒度变小 ,飞行速度加快 ,制备出的涂层强度提高 ,孔隙率降低的机理。它是改善电弧喷涂涂层质量的一种新的方法。As a new method to improve the quality of arc-spraying, arc-ultrasonic was introduced into the field of spraying. As the heat resource of arc-spraying, the arc of spraying could emit ultrasonic excited by high frequency modulation. The effects of ultrasonic, such as cavitations effect, mechanical effect and heat effect, improved the atomization result of spraying materials. The quality of spraying was improved with the application of arc-ultrasonic as the spraying graininess was reduced, the flight speed of grain was accelerated and the porosity was reduced.

关 键 词：电弧超声 研究 超声波 电弧喷涂 雾化 

分 类 号：TG174.442[金属学及工艺—金属表面处理]