钛合金铸锭表面加热保护及锻造润滑用玻璃涂层的研究现状与展望

Recent Development Progress of Glass-based Coatings for High Temperature Protection and Lubrication on Ti-based Alloy Ingots

摘要:

玻璃涂层用作钛合金铸锭的高温保护涂层,可以同时解决铸锭加热过程中的高温氧化问题和锻造过程中的润滑问题,还能起到保温隔热的作用,从而降低钛合金铸锭的氧化消耗并避免锻造开裂。介绍了钛合金铸锭在加热和锻造过程中存在的问题,以及钛合金铸锭表面加热保护及锻造润滑用玻璃保护涂层的研究进展,包括涂层的设计原则、化学组成以及制备方法,简述了玻璃涂层的抗氧化和润滑机理以及涂层/基体的高温界面反应,并展望了钛合金铸锭表面加热保护及锻造润滑用涂层的发展方向。

Abstract:

Ti-based alloy ingots are susceptible to suffering with high temperature oxidation during heat treatment and cracking during forging. So glass-based coatings are used to protect the Ti-based ingots. It can simultaneously increase the oxidation resistance of the ingots and make a positive effect on lubrication during forging. Moreover,the glassbased coating can make a thermal insulation effect due to its low thermal conductivity,which is also beneficial for forging. In this investigation,the development status of the glass-based coatings for Ti-based alloy ingots,including the designing principle,chemical composition,preparation method,mechanisms of high temperature protection and lubrication,interfacial reactions between the coating and the substrate were reviewed. Furthermore,the development direction of the glass-based coating for Ti-based alloy ingots was discussed as well.