Hot-Dip Coating of Lead-free Aluminum on Steel Substrates with Ultrasonic Vibration

作     者：Y. Tsunekawa S. Tamura M. Okumiya N.Ishihara 

作者机构：Toyota Technological Institute Tempaku Nagoya 468-8511 Japan 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2008年第24卷第1期

页      面：41-44页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Ultrasonic vibration Cavitation Sono-Capillary effect Hot-dip coating 

摘      要：Hot-dip coating has been practically employed in manufacturing zinc alloy coated steel ***,it is difficult to coat aluminum alloy on a bulky steel substrate without sufficient preheating,because a rapidly solidified layer containing gas babbles is formed on a substrate surface.A variety of iron-aluminides are also formed at the interface of a steel and aluminum hot-dip coating system,which is the main difficulty in joining of steel with *** vibration was applied to a steel substrate during hot-dip coating of aluminum alloy to control a rapidly solidified layer and a brittle reaction *** dipping of columnar steel substrates into molten aluminum alloy （Al-2.7 mass fraction Si-4.6 mass fraction Sn） was carried out through the use of a Langevin oscillator with resonant frequency of 19.5 *** application of ultrasonic vibration is quite effective to control a rapidly solidified layer and a surface oxide layer from a substrate surface by the sonocapillary effect based on a cavitation phenomenon,so that the intimate contact is achieved at the beginning of hot-dip *** application of ultrasonic vibration to hot-dipping is effective to control a reaction layer with less than 5 #m in *** impact test exhibits that the good adhesive strength is approved in hot-dipped aluminum coatings with a thin reaction layer of approximately 5μm.