316L不锈钢阻氢或氢同位素渗透搪瓷壁垒层的制备及性能研究  

Preparation and properties of enamel barrier on 316L stainless steel for resistance of hydrogen and its isotopes penetration

作　　者：陶杰[1] 黄镇东[1] 陈照峰[1] 汪涛[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016

出　　处：《核科学与工程》2008年第4期347-353,共7页Nuclear Science and Engineering

基　　金：国家自然科学基金(50571045);江苏省重大成果专项基金(BA2006067)

摘　　要：为解决316L不锈钢防氢及其同位素渗透问题，采用两搪两烧方法在不锈钢基体表面制备厚90～110μm的搪瓷涂层。利用X射线衍射仪、光学和扫面电子显微镜表征搪瓷涂层的显微结构、界面形貌，通过EDS线扫描分析界面处主要元素分布，结果显示搪瓷涂层结构致密，与基体形成化学结合，抗落球冲击和热震性能优异。西华特装置气相充氢试验与维氏显微硬度试验结果表明搪瓷涂层是一种有效地阻止氢及其同位素渗透的壁垒层。In order to solve the problems of the resistance of hydrogen and its isotopes penetration for 316L stainless steel, the enamel coating with a thickness of 90~110 tLm was prepared on the stainless steel substrate with the aid of coating and enameling for twice. The microstructure and the interracial morphology of the samples were character- ized respectively by X-ray diffractometer, optical and scanning electron microscopy. Moreover, the profiles of main elements at the interface between the coating and the substrate were analyzed by EDS line-scanning. The experimental results indicated that the dense enamel coatings were chemically bonded with 316L stainless steel substrate, and possessed perfect thermal shock and ball-dropping impact properties. Finally, a conclusion was drawn from the results of hydrogen charging in a Sieverts apparatus and the Vickers microhardness test that the as-prepared dense enamel coating exhibited a good barrier effect to hydrogen and its isotopes penetration.

关 键 词：渗透壁垒层 氢及其同位素 玻璃质涂层 聚变堆 

分 类 号：TL64[核科学技术—核技术及应用]