镍表面喷砂处理及粘接性能研究

Study on the Surface Sandblasting Treatment and Bonding Properties of Nickel

研究了镍表面喷砂处理后的3种不同清洗方法,分别为喷砂后丙酮擦拭,喷砂后丙酮中超声波清洗和喷砂后水中超声波清洗。对处理后的镍表面进行了接触角、表面形貌、表面粗糙度、表面元素组成和粘接强度特性的研究。讨论了表面喷砂后不同清洗方式对表面性质和成分变化的影响。使用水和二乙二醇作为测试液对表面进行润湿性测试,来研究不同清洗方式对镍片的润湿性影响;并通过单搭接镍-镍组件拉伸试验评估了粘接强度。AFM结果表明,喷砂后不同的清洗方式对表面形貌和粗糙度有较大影响,粗糙度从3.65 nm增加到最高的56.4 nm;XPS分析表明,喷砂后不同清洗方式使得试样的表面成分发生了变化。研究表明,镍片的高表面粗糙度和表面良好的润湿性,使喷砂后丙酮中超声波处理镍片的粘接强度最高,达到32.29 MPa。

Three different cleaning methods for nickel surfaces after sandblasting treatment are studied,which are acetone wiping,ultrasonic cleaning in acetone and ultrasonic cleaning in water.The contact angle,surface morphology,surface roughness,surface elemental composition and bonding strength characteristics of the treated nickel surfaces are studied.The effects of different cleaning methods on the surface properties and composition changes after surface sandblasting are discussed.The wettability tests are performed on the surface with water and diethylene glycol as the test solutions to investigate the effect of different cleaning methods on the wettability of nickel flakes;and the bonding strength is evaluated by single-lap nickel-nickel subassembly tensile tests.The AFM analysis shows that different cleaning methods have a great influence on the surface morphology and roughness,and the roughness increases from 3.65 nm to the highest of 56.4 nm;The XPS analysis shows that the surface composition of the sample changes with different cleaning methods after sandblasting.This study indicates that the high surface roughness and good surface wettability of nickel flakes can make the highest bonding strength of 32.29 MPa for ultrasonic treated nickel flakes in acetone after sandblasting.