A Microwave Oven Magnetron Rhenium-Tungsten Electrode Preparation Yttrium

A microwave oven magnetron yttrium rhenium tungsten electrode preparation process, which comprises the following steps :

a, Mixture , calculated by weight percent : 0.3 3% yttrium , 0.1-2 % rhenium , tungsten, rhenium, the balance in the proportion of yttrium solution and ammonium paratungstate , tungsten, yttrium mixed into a mixture of rhenium ;

b, The first hydrogen reduction , the use of temperature-programmed manner 400 900 ℃ stages remain , for every stage 8 15min;

c, The second hydrogen reduction , the use of temperature-programmed manner 600 1100 ℃ stages remain , for every stage 8 15min, prepared yttrium tungsten rhenium alloy powder ;

d, Compacts , secondary vertical melt at 2000 2700 ℃ phases remain 10 20 min;

e, Forged after cooling , alumina insulation, the alloy material to cool slowly ;

f, Drawing, using a long furnace , divided 3 warm period, the first phase of the 480 550 ℃, the second phase 900 1000 ℃, the third phase 700 800 ℃, heat from low to high and then using a parabolic cooling process control ; < br />
g, Electrolysis , cutting , sodium clean shape.


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