一种铈（Ⅲ）配合物对含石墨粘结涂层耐蚀性的影响  

The Effect of a Cerous Complex on Anti-Corrosion Characteristic of Bonded Film Containing Graphite

作　　者：连亚峰 聂明德[1] 党鸿辛 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑开放研究实验室

出　　处：《摩擦学学报》1994年第1期1-8,共8页Tribology

基　　金：国家自然科学基金

摘　　要：为了改善含石墨粘结涂层的耐蚀性，首先对这种涂层在腐蚀环境中耐蚀性差的原因进行了分析，然后将二正丁基磷酸、ＣｅＦ＿３、Ｓｂ＿２Ｏ＿３和一种Ｃｅ（Ⅲ）配合物Ｃｅ（ＮＯ＿３）（Ｃ＿８Ｈ＿（１８）ＰＯ＿４）＿２分别添加于酚醛环氧－ＭｏＳ＿２－石墨粘结涂层中，考察了它们对这种涂层耐蚀性的影响，并对含Ｃｅ（ＮＯ＿３）（Ｃ＿８Ｈ＿（１８）ＰＯ＿４）＿２的涂层和空白样涂层进行了表面分析。盐雾试验表明，添加Ｃｅ（ＮＯ＿３）（Ｃ＿８Ｈ＿（１８）ＰＯ＿４）＿２可以有效地抑制涂层中ＭｏＳ＿２的氧化和由石墨所引起的金属底材之电化学腐蚀；根据Ｘ射线光电子能谱分析结果可知，添加Ｃｅ（ＮＯ＿３）（Ｃ＿８Ｈ＿（１８）ＰＯ＿４）＿２之所以能够提高含石墨粘结涂层的耐蚀性，应当归因于它在ＭｏＳ＿２晶体表面和金属底材表面的吸附。因此，Ｃｅ（Ⅲ）配合物Ｃｅ（ＮＯ＿３）（Ｃ＿８Ｈ＿（１８）ＰＯ＿４）＿２是含石墨粘结涂层的一种实用性能良好的新型防腐添加剂。A certain tatio of graphite was added to bonded MoS2 solid film because of a synergisticeffect of tribological properties of graphite with molybdenum disulfide,but graphite may acceleratethe corrosion of metal substrate and exacerbate the corrosion resistance of bonded film,Formolybdenum disulfide-graphite bonded film,factors causing corrosion were investigated in thispaper. Various anti-corrosion additives(inhibitors),which were used to improve the corrosionresistance of bonded film,were also mentioned. In order to improve the corrosion resistance ofbonded film containing graphite,a cerous complex(BuC)of di-n-butylphosphinic acid with cerousnitrate was added to novolac-epoxy-MoS2 bonded film. The salt(NaCl)spray corrosion tester wasused to determine the effects of different additives on the corrosion resistance of bonded film. Thecorrosion test was carried out in accordance with ANSI/ASTM B117-73(1979).The test resultsshow that the bonded films containing di-n-butylphosphinic acid(BuP),CeF3,Sb2O3 separately orwithout these additives were all corroded after 150 hours continuous corrosion test, however,thebonded film containing BuC was not corroded after more than 500 hours continuous corrosion test.BuP can not be as an anti-corrosion additive for the bonded film and it has a short time of apperancerust dot. The results of XPS show that theaddition of BuC is effective to reduce the oxidation degreeof MoS2 in the film. The distribution of BuC in bonded film is uniform,i.e. it has high content ofBuC at the surface and interfdce,and low content in the inner laver of bonded film. The oxidationdegree of MoS2 in defferent layer of bonded film is different.Considering these results,we mayconclude that the increasing of corrosion resistance of bonded film containing graphite is due to thedistribution of BuC in bonded film and its adsorption on MoS2.

关 键 词：石墨粘结涂层 稀土配合物 防腐剂 

分 类 号：TG174.42[金属学及工艺—金属表面处理]