Ceramic testing method
First Claim
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1. A ceramic testing method comprising the steps of heating a ceramic specimen containing tetragonal zirconia in water or a water vapor atmosphere containing not less than 2.5 g/l of water at a temperature in a range of 150°
- -1,250°
C., for a time sufficient to result in deterioration of any non-stabilized zirconia that is present in said ceramic specimen, and measuring the degree of deterioration of the ceramic specimen to evaluate long term durability and reliability of the ceramic specimen.
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Abstract
A method for determining an amount of non-stabilized zirconia in a ceramic specimen involves subjecting the ceramic specimen to an environment having a controlled temperature and humidity and measuring mechanical and/or chemical properties of the specimen to determine if any deterioration of the specimen has occurred.
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Citations
10 Claims
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1. A ceramic testing method comprising the steps of heating a ceramic specimen containing tetragonal zirconia in water or a water vapor atmosphere containing not less than 2.5 g/l of water at a temperature in a range of 150°
- -1,250°
C., for a time sufficient to result in deterioration of any non-stabilized zirconia that is present in said ceramic specimen, and measuring the degree of deterioration of the ceramic specimen to evaluate long term durability and reliability of the ceramic specimen. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
- -1,250°
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2. A ceramic testing method comprising the steps of heating a ceramic specimen containing not less than 5% by weight of tetragonal zirconia in water or a water vapor atmosphere containing not less than 2.5 g/l of water at a temperature in a range of 150°
- -500°
C. for a period of time between one hour and one hundred hours sufficient to result in deterioration of any non-stabilized zirconia that is present in said ceramic specimen, and measuring the degree of deterioration of the ceramic specimen to evaluate long term durability and reliability of the ceramic specimen. - View Dependent Claims (3)
- -500°
Specification