Molybdenum News Center

Nano-molybdenum powder preparation methods are: microwave plasma method, the electric pulse discharge method. 
 

1 nanometer molybdenum powder preparation method - microwave plasma method 

Microwave plasma pyrolysis method using the principle of hydroxyl preparing molybdenum powder. Microwave plasma apparatus using a high frequency electromagnetic oscillations and N2 microwave reaction gas breakdown, a high-temperature plasma, thereby enabling the Mo (CO) 6 in an atmosphere of N2 plasma pyrolysis uniform nanoscale particle of molybdenum powder, the device may CO generated immediately discharged, and so rapid condensation of Mo into the collection means, it is possible to prepare a smaller particle size than the nano-hydroxy fumed molybdenum powder (average particle diameter of 50 nm or less), a single substantially spherical particles, good stability at room temperature in air, such nano-molybdenum powder thus be used widely. 
 

2 Nano-molybdenum powder preparation method - plasma hydrogen reduction 

Plasma reduction principle is: the use of hybrid plasma arc reactor will HVDC on the high-frequency plasma jet flow, thus forming a hybrid plasma flow, using a plasma vapor reduction initially get superfine molybdenum powder. The initial injection of superfine molybdenum powder obtained in the DC arc jet, immediately cooled by the cooling water into the ultrafine particles. The average particle diameter of the obtained powder was about 30 ~ 50 nm, applied to the thermal spraying powder is spherical. The other method is also useful for the preparation of ultrafine powders of refractory metal, such as W, Ta and Nb. 
 

Higher microwave plasma and plasma prepared by hydrogen reduction of molybdenum powder purity nano-morphology is better, but its production costs increased substantially. 
 

3 nm molybdenum powder preparation methods - mechanical alloying 

Using carbon steel, SUS304 stainless steel, alloy steel and other materials container and balls, ball molybdenum powder, particle size can be obtained about 6 nm molybdenum powder. This method causes Fe, Fe-Cr-Ni solid solution Mo and W in which the amount of solute to reach the percentage level. 

 

In addition, the electric pulse method and electron beam irradiation, air flow grinding, wire electrical explosion method, high-intensity ultrasound, electroporation pulse discharge, closed loop hydrogen reduction method, electron beam irradiation, etc. Most have only the value of experimental studies, does not have the conditions for the preparation of industrialization. 

More molybdenum product: http://www.molybdenum.com.cn
Tel: 0592-5129696 Fax：0592-5129797
E-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Price: http://www.chinatungsten.com