Sintering Process Effect on Tungsten Copper Electrode Properties III

Tungsten powder unit-based sintering can be divided into three sections, which include coupling phase, sintered neck formation, closed pores spheroidization and reducing phase. In order to obtain the desired tungsten skeleton, we should try to control the sintering process within the second section, which is beneficial for porosity reducing and ensuring the best powder sintering temperature of different granularity.

As the temperature increases, the density of tungsten copper electrodes increase in the first two stages of sintering. Initial contact point or contact surface of tungsten powder changes into crystalline combination, through nucleation, growth and other atomic processes to form a sintered neck, then to a large number of atoms migrate bonding surface tungsten particles makes the sintering neck to expand, narrow particle spacing and form continuous pore network, and because of grain growth, grain boundary migration began, the area swept by grain boundary pores will miss, thereby forming tungsten skeleton connection.

More information about sintering process effect on tungsten copper electrode properties, click here:

http://news.chinatungsten.com/en/tungsten-information/80415-ti-10319
http://news.chinatungsten.com/en/tungsten-information/80416-ti-10320

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