Sintered TZM Alloy
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- Category: Molybdenum knowledge
- Published on 12 October 2015
- Written by yiping
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TZM alloy sinteredThere are protection of hydrogen sintering and vacuum sintering, the sintering process in the protection of hydrogen, the reduction of hydrogen, oxides of molybdenum powder is reduced with hydrogen, the oxygen content of the material is reduced to several tens μg/g or less.
For adding titanium, zirconium, hafnium, niobium and other active elements molybdenum alloy, the alloy elements of high activity with hydrogen gas in the reaction of the impurity oxides, nitrides, hydrides, leading to the high impurity content of molybdenum alloys high, seriously affecting the molybdenum alloy mechanical properties. Can effectively reduce the vacuum sintering molybdenum alloys of these oxygen, nitrogen and other impurities in gases, in a vacuum sintering process, generally will be added a slight excess of carbon (relative to fixed component), through carbon reduction of metal oxides deoxygenated.
Carbon reduction system of the metal oxide to form metal carbides and CO, and MoO2 disproportionation under high vacuum metal Mo, MoO3 reaction gas is withdrawn, the two reactions are primary deoxidation process, vacuum sintering mechanism.
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