Reference

Detection of low-valence oxides on metals by ESCA

Detection of low-valence oxides on metals by ESCA. Holm, R.; Storp, S. (Ber. Agnew Phys., Bayer A.-G., Leverkusen, Ger.). Vak.-Tech., 25(6), 172-5 (German) 1976. CODEN: VAKTAY. DOCUMENT TYPE: Journal CA Section: 79 (Inorganic Analytical Chemistry) Metal oxides of lower valence states than the stable valence of the metal were detected by ESCA. Low-valence oxides participate in the buildup of the oxide film under such conditions as restricted O supply, controlled redn., or ion bombardment. Examples of low-valence oxides detected are those of Ta, Mo, and W. Thus, MoO2 and MoO3 were detected on freshly polished surface of a Vitallium alloy sterilized in boiling H2O.Except for chemicals metioned above, 18868-43-4 and 12036-22-5 are also used. .

Electrochemically modified spectroscopic study on the corrosion inhibition effect of sodium molybdate (Na2MoO4) addition to sulfuric acid on SUS36 stainless steel

Electrochemically modified spectroscopic study on the corrosion inhibition effect of sodium molybdate (Na2MoO4) addition to sulfuric acid on SUS36 stainless steel. Lu, Aping; Guo, Jinnian; Zen, Rensen (Fujian Inst.Some chemicals with cas registry numbers like 18868-43-4 and 12033-38-4 are also used. Struct. Matter, Acad. Sin., Fuzhou, Peop. Rep. China). Huagong Jixie, 13(6), 46-50 (Chinese) 1986. CODEN: HUJIDJ. ISSN: 0254-6094. DOCUMENT TYPE: Journal CA Section: 72 (Electrochemistry) Section cross-reference(s): 55 In the activation dissoln. potential region of SUS 36 PH austenite stainless steel (Cr 18.37, Ni 12.77, Mo 0.89, Cu 1.66, Si 0.65, Mn 1.60, S 0.02, P 0.04, and C 0.07%) in 20% H2SO4 not contg. Na2MoO4 enrichment of Cr2O3.nH2O on the surface of the steel occurred but offered no protection. In 20% H2SO4 contg. Na2MoO4 a film was formed on the electrode by cathodic redn. of MoO42-, which was composed mainly of MoO2 contg. Cr3+ and small amt. Mo8O23. This film suppressed the corrosion of the steel. In the passivation potential region, MoO2 started to dissolve but the MoO42- in the soln. deposited on the electrode as Mo8O23 which changed to Mo4O11 as the elec. potential was raised. .