防锈油膜失效过程中的导电行为转变  

SEMI-CONDUCTIVE BEHAVIOR DURING DEGRADATION OF A RUST PREVENTIVE OIL FILM ON 304 STAINLESS STEEL IN 3% NaCl SOLUTION

作　　者：钟庆东[1] 郑金[1] 徐乃欣[2] 印仁和[3] 周国定[1] 

机构地区：[1]上海电力学院电化学研究室 [2]中国科学院上海微系统研究所,上海200050 [3]上海大学化学系,上海200436

出　　处：《腐蚀科学与防护技术》2004年第2期83-86,共4页Corrosion Science and Protection Technology

基　　金：上海市教育委员会"曙光"计划 (0 1SG0 43 );上海市教育委员会"电厂热能动力与环境工程"重点学科项目资助

摘　　要：采用电位 -电容法及Mott-Schottky分析技术研究了自腐蚀电位条件下防锈油膜在 3%氯化钠溶液中失效过程的导电机制转变行为 .研究表明 ,防锈油膜失效过程中存在半导体导电特征 ,随着浸泡时间的延长 ,防锈油膜从浸泡初期的 p型半导体转变为n型半导体 ,防锈油膜逐渐出现两个空间电荷过渡层 ,并且计算了不同转变时期防锈油膜中的电子给体 (ND)和电子受体 (NA)的密度 .In this paper,conducting transformation of a rust preventive oil film on 304 stainless steel in 3% NaCl solution under potential was studied by means of potential-capacitance method and Mott-Schottky analysis.It was pointed out that there existed semiconducting behaviour of the rust preventive oil film during its degradation.With increasing immersion time the rust preventive oil film transformed from p type semiconductor at the early stage of immersion to n type semiconductor,two transition layers of space charge gradually formed in the rust preventive oil film.N D and N A of oil film in different transition process were also calculated.

关 键 词：防锈油膜 失效 导电机制.p型半导体 N型半导体 电位-电容法 Mort-Schottky分析 

分 类 号：TG174.48[金属学及工艺—金属表面处理]