The corrosion behavior and passivation mechanism of S32750 super-duplex stainless steel exposed in a simulated marine atmosphere were studied using electrochemical methods, XPS SEM. Passivation local occurred on the metal surface when SDSS was atmospheric environment. film is composed two chromium-enriched layers. outer layer very thin at metal/atmosphere interface specimen with higher chromium...

Measurements of the open circuit potential AA1050 were performed in 10 mM CrO3, and Al-matrix around intermetallic particles was found to dissolve locally. Pre-immersion 1 M NaOH promoted dissolution particles, resulting improvement pitting corrosion resistance NaCl solutions. The provided by molybdate treatment is effectively improved pre-immersion NaOH. maximum pit depth specimen treated MoO3...

A mild, efficient and fast method for the oxidation of alcohols and trimethylsilyl, tetrahydropyranyl and methoxymethyl ethers to their corresponding carbonyl compounds using CrO3 in the presence of rice husk ash (RHA) is reported. All reactions were performed at room temperature in high to excellent yields. A new, efficient and green catalyst, heterogeneous reaction conditions, easy work-up of...

a mild, efficient and fast method for the oxidation of alcohols and trimethylsilyl, tetrahydropyranyl and methoxymethyl ethers to their corresponding carbonyl compounds using cro3 in the presence of rice husk ash (rha) is reported. all reactions were performed at room temperature in high to excellent yields. a new, efficient and green catalyst, heterogeneous reaction conditions, easy work-up of...

A mild, efficient and fast method for the oxidation of alcohols and trimethylsilyl, tetrahydropyranyl and methoxymethyl ethers to their corresponding carbonyl compounds using CrO3 in the presence of rice husk ash (RHA) is reported. All reactions were performed at room temperature in high to excellent yields. A new, efficient and green catalyst, heterogeneous reaction conditions, easy work-up of...