| 摘要 |
PURPOSE:To produce a jig for sintering ceramics which is free from deformation at a high temp. by subjecting an Mo alloy contg. an adequate amt. of a high melting oxide to working such as forging at an adequate temp. then forming the alloy and subjecting further the alloy to heat treatment at the secondary recrystallization temp. or above. CONSTITUTION:An Mo alloy contg. 0.05-5.0wt% >=1 kinds among high melting oxides such as ZrO2, Y2O3, MgO, etc. is subjected to forging or rolling at >=80% working ratio in the temp. region from a room temp. up to the primary recrystallization temp. or below and is then worked to the shape of a jig. The resultant precursor of the jig is subjected to a heating treatment in the temp. region from the temp. higher by 100 deg.C than the secondary recrystallization temp. up to <=2,200 deg.C, by which the jig 1 for sintering ceramics is obtd. The above-mentioned jig 1 for sintering ceramics is obtd. The above-mentioned jig 1 consisting of the Mo alloy grown with the flat, slender and large secondary recrystallization grains and having excellent high-temp. strength is obtd. by the above-mentioned heat treatment. The jig 1 is usable for sintering ceramics after said jigs are superposed into several steps.
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