Factors affecting sintering TZM
The influencing factors of sintering TZM include the following points: sintering method, sintering atmosphere, sintering temperature, raw material impurities, etc. The sintering methods of molybdenum alloys are often hydrogen sintering and vacuum sintering. Hydrogen has a certain reducing effect. The molybdenum oxide in the oxide will be reduced by hydrogen, reducing the oxygen content of the material to less than tens of μg/g, which is beneficial to improving the properties of the alloy.
TZM alloys are doped with active elements such as titanium and zirconium. These active elements will react with hydrogen impurities to generate oxides, nitrides, hydrides, etc., resulting in high impurity content in TZM alloys and affecting the mechanical properties of the alloy. Therefore, Suitable for vacuum sintering. It can not only effectively reduce the content of oxygen and nitrogen, but also help improve the performance of the alloy.
Sintering temperature of TZM alloy: TZM alloy produced by powder metallurgy method. Mix the molybdenum powder and alloy additives evenly in a mixer, press them into rods with a cold isostatic press, and then pre-sinter them in a high-temperature furnace at a sintering temperature of 1400°C and keep them warm for 1 hour. Finally, it is put into a medium frequency induction furnace and kept at a temperature of 1900°C for 5 hours for sintering.
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