Question

1. Volatile oxidation corrosion product of a metal is,
A. Fe2O3
B. MoO3
C. Fe3O4
D. Feo​

Answer 1

Answer:

MoO3 .................

Answer 2

MoO₃ is a volatile oxidation corrosion product of metal. (Option B)

• Molybdenum metal produces a volatile layer, which causes continual and fast corrosion.
• Molybdenum is a metal that forms ferrites.
• That example, when molybdenum is added to austenitic stainless steel to increase corrosion resistance, austenite former, such as nickel or nitrogen, must be added to preserve the structure austenitic.
• Molybdenum does not react with dry oxygen at ambient temperature, but it rapidly oxidizes above 500°C or higher and evaporates at 650°C or higher, forming MoO3 of white mouse color.