Need help? 24 hours online : +8613916614261


Welcome to our Online Store!


High temperature thermos flask and metal molybdenum vacuum heat treatment

Min.Order Quantity: 1 Set/Sets High temperature thermos flask and metal molybdenum vacuum heat treatment

Supply Ability: 2 Set/Sets per Month High temperature thermos flask and metal molybdenum vacuum heat treatment

Payment Terms: L/C,T/T,


  • Product Details
  • Technical Parameters
  • Send Inquiry

 High temperature thermos flask and metal molybdenum vacuum heat treatment furnace

 

There are two main sintering methods for molybdenum-zirconium-titanium alloys: hydrogen protection sintering and vacuum sintering.

1. Hydrogen protection sintering: The so-called hydrogen protection sintering is sintering in the state of hydrogen.

During the hydrogen protection sintering process, due to the reduction effect of hydrogen, the oxides in the molybdenum powder will be replaced by hydrogen, reducing the oxygen content in the material to less than tens of μg/g, but for the addition of titanium, zirconium, etc. Active element molybdenum alloys, due to the high activity of alloying elements, will react with impurity gases in hydrogen to form oxides, nitrides, hydrides, etc., resulting in high impurity content in molybdenum-zirconium-titanium alloys, which seriously affects its mechanical properties . Therefore, vacuum sintering is generally used for the sintering of molybdenum-zirconium-titanium alloys.

2. Vacuum sintering: Vacuum sintering is a method of sintering porcelain blanks under vacuum conditions, and its porosity is relatively small. Compared with hydrogen protection sintering, vacuum sintering effectively reduces the gas content of impurities such as oxygen and nitrogen in the molybdenum-zirconium-titanium alloy.

In the vacuum sintering process, generally a slight excess of carbon element (relative to the predetermined composition) is added to deoxidize the metal oxide through the reduction of carbon element. Among them, there are two main deoxidation mechanisms: metal oxides in the carbon reduction system produce metal carbides and copper and molybdenum dioxide undergo a disproportionation reaction under vacuum and high temperature to produce metal molybdenum and molybdenum trioxide gas is extracted. In the disproportionation reaction of metal oxides and molybdenum dioxide in the carbon reduction system, the temperature at which the two reactions start is related to the partial pressure of the product gas in the furnace. As the partial pressure of the product in the furnace decreases, the reaction start temperature gradually decreases. Therefore, increasing the vacuum degree in the furnace and reducing the partial pressure of the product gas can lower the temperature at which the deoxygenation reaction proceeds, which is beneficial to the deoxygenation.

Shanghai Geheng Vacuum Technology Co., Ltd. is a vacuum heat treatment furnace manufacturer with many years of experience in design, manufacturing and production. Mainly produce vacuum heat treatment furnace, vacuum sintering furnace, vacuum brazing furnaceNew Energy And Environmental Protection Equipment and other vacuum equipments.Provide customized services, equipment work area can be based on customer output.

Learn more:

Vacuum Sintering Furnace

Zirconia/Alumina Ceramic Sintering Furnace

Copyright: SIMUWU Vacuum Furnace

 

 

 


Fill in your product requirements and get solutions or product quotes by sales siwen

Your request will be answered within one working day.

Related Products

P5 vacuum hot pressing sintering furnace

P5 vacuum hot pressing sintering furnace

Product Details

Silicon oxide powder vacuum sintering furnace

Silicon oxide powder vacuum sintering furnace

Product Details

High temperature vacuum hardening sintering melting brazing furnace

High temperature vacuum hardening sintering melting brazing furnace

Product Details

Laboratory vacuum tube furnace

Laboratory vacuum tube furnace

Product Details