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Molybdenum Target Chemical Properties

Molybdenum targets chemical properties are stable. At room temperature, it in air or water is stable, but when the temperature up to 400 ℃ it will occur slightly oxidized. Severe oxidation to produce MoO3 when the temperature reached 600 ℃ occurs. Hydrochloric acid, hydrofluoric acid, nitric acid and dilute alkali solution does not react with the molybdenum target, but it can dissolve in nitric acid, aqua regia or hot sulfuric acid solution.

Medium Experiment Condition Reaction Condition
Water   Non-corroding
HF Cold, hot Non-corroding
HF+H2SO4 Cold Non-corroding
Hot Slight corrosion
HF+aqua regia Cold Slight corrosion
Hot Rapid corrosion
HF+HNO3 Cold, hot Rapid corrosion
Ammonium hydroxide   Non-corroding
Molten caustic soda In air Slight corrosion
Oxidant KNO3, KNO2,KclO3,PbO2 Rapid corrosion
Boron High temperature Generate boride
Carbon Above 1100℃ Generate carbide
Silicon Above 1100℃ Generate silicide
Phosphorus To maximum temperature Non-corroding
Sulfur Above 440℃ Generate sulfide
Iodine Under 790℃ Non-corroding
Bromine Under 840℃ Non-corroding
Chloride Above 230℃ Active corrosion
Fluorine Room temperature Active corrosion
Air and oxygen 400℃ Starts to oxidize
600℃ Intense oxidant
Above 700℃ MoO3 sublimation
Hydrogen and inert gas To maximum temperature No reaction
CO Above 1400℃ Generate carbide
CO2 1200℃ oxidation
Hydrocarbon 1100℃ Generate carbide
Al Ni Fe Co Sb Molten mass Active corrosion
Zn Molten mass Slight corrosion
Bi Molten mass Highly corrosion
Glass Molten mass Highly corrosion
Refractory oxide Al2O3,ZrO2,BeO,MgO,ThO2 Under 1700℃ Non-corroding
Nitrogen Above 1100℃ Nitridation reaction

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