超声波辅助选择性电沉积技术研究进展

发布时间：2018-03-03 12:26

本文选题：超声波　切入点：选择性的　出处：《中国机械工程》2015年09期 　论文类型：期刊论文

【摘要】：选择性电沉积技术可用于机械零件局部表面功能性涂层的制备,还可用于局部损失部位的尺寸恢复,该技术具有沉积电流密度大、沉积速度快的特点,但同时存在沉积层残余应力大、易产生裂纹、质量不均匀等不足。将超声波引入选择性电沉积可减小沉积层的内应力,提高沉积层的硬度和耐腐蚀性能,实现机械零件局部高性能涂层的制备及小型精密件的快速成形。介绍了浸没式超声辅助选择性电沉积、超声辅助喷射电沉积以及工件振动式超声辅助喷射电沉积等超声波在选择性电沉积技术中的应用方式,重点介绍了超声波对镀层表面形貌、相结构、硬度、耐磨性、耐腐蚀性等的影响,探讨了超声空化、热效应和机械效应等超声波影响选择性电沉积的机理,并指出了超声波辅助选择性电沉积技术存在的问题及发展方向。
[Abstract]:Selective electrodeposition technology can be used to prepare functional coatings on the local surface of mechanical parts and to recover the size of local loss areas. The technology has the characteristics of high deposition current density and high deposition speed. But at the same time, the residual stress of the deposit is large, it is easy to produce cracks, the quality is not uniform and so on. The ultrasonic selective electrodeposition can reduce the internal stress of the deposit, and improve the hardness and corrosion resistance of the deposit. The preparation of local high performance coatings for mechanical parts and the rapid prototyping of small precision parts are realized. The immersion ultrasonic assisted selective electrodeposition is introduced. Ultrasonic assisted spray electrodeposition and workpiece vibration ultrasonic assisted spray electrodeposition are applied in selective electrodeposition. The surface morphology, phase structure, hardness, wear resistance of the coating are introduced in detail. The effects of ultrasonic cavitation, thermal effect and mechanical effect on selective electrodeposition are discussed. The problems and development trend of ultrasonic assisted selective electrodeposition are pointed out.
【作者单位】：装甲兵工程学院;中国西安卫星测控中心;
【基金】：国家自然科学基金资助项目(51102283)
【分类号】：TG174.4

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