METHOD FOR THE PRODUCTION OF HIGHLY WEAR-RESISTANT CERAMIC MATERIAL
First Claim
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1. METHOD FOR THE PRODUCTION OF HIGHLY WEAR-RESISTANT BODIES OF AL2O3 CERAMIC MATERIAL, CHARACTERIZED BY THE SUCCESSION OF THE FOLLOWING OPERATING STEPS:
- A. PREPARING A MIXTURE CONSISTING OF 100 PARTS BY WEIGHT OF
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Abstract
A new method for the production of extremely wear-resistant aluminum oxide ceramic material, particularly Al2O3 in which at least 98% Al2O3 powder is mixed with 10-50 pph carbonaceous plasticizer, optionally pressed into a blank, heated to 1,280*1,500* C., sintered for at least 5 minutes at the highest temperature, and then cooled is described.
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7 Claims
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1. METHOD FOR THE PRODUCTION OF HIGHLY WEAR-RESISTANT BODIES OF AL2O3 CERAMIC MATERIAL, CHARACTERIZED BY THE SUCCESSION OF THE FOLLOWING OPERATING STEPS:
- A. PREPARING A MIXTURE CONSISTING OF 100 PARTS BY WEIGHT OF
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2. Method according to claim 1 wherein polyvinyl alcohol is the carbonaceous plasticizer.
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3. Method according to claim 1 wherein 100% Al203 powder is used.
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4. Method according to claim 1 wherein the mixture of step (a) is pressed into a blank.
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5. Method according to claim 4 wherein the pressure is applied before the maximum temperature has been attained.
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6. Method according to claim 4 wherein the pressure is applied when about the maximum temperature has been attained.
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7. Dense, ceramic aluminum oxide body, produced according to claim 1.
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