【摘要】 文中将钼酸钠用作铁质文物表面保护的缓蚀剂 ,采用原子吸收光谱和电化学动电位极化法研究了钼酸钠对铁器文物表面的保护效果 ,用X射线光电子能谱 (XPS)技术探讨了钼酸钠对铁器锈层表面的作用机理。结果表明 ,钼酸钠对铁器锈层表面有很好的保护效果 ,其原因是钼酸钠促进了铁器表面的活泼锈 (γ FeOOH)向稳定锈(Fe2 O3 )的转变 ,同时有稳定的氧化物三氧化钼 (MoO3 )及难溶的钼酸盐 (FeMoO4)生成 ,这样锈层表面形成了由稳定的Fe2 O3 ,MoO3 ,FeMoO4组成的致密的保护膜 ,这层膜可以起到阻止外界有害物质向金属表面的侵蚀 ,从而抑制了基体腐蚀的进一步扩展更多还原

【Abstract】 Sodium molybdate was used as a corrosion inhibitor for the surface protection of iron relics. The atomic absorption spectrophotometry,polarization curve and X ray photoelectron spectroscopy (XPS) were employed to study the protective effect and the inhibitive mechanism of sodium molybdate on the rust surface. The results show that sodium molybdate has a protection function on the rust surface. The reason is that the sodium molybdate accelerates the transformation of surface rust from γ FeOOH to Fe 2O 3. At the same time, the steady MoO 3 and FeMoO 4 are formed, so there is a compact film which is made up of Fe 2O 3,MoO 3 and FeMoO 4 on the rust surface. It could hold corrosive substances back from corroding the metal, and prohibit the farther development of the base metal corrosion.更多还原