| 摘要 |
A light-transmitting crystalline alumina body which consists of alpha -Al2O3 containing 0.1 to 1.0 weight percent of strontium oxide. A method for producing an alumina body comprises preparing a mixture of finely divided alumina powder with 0.1 to 1.0 weight percent of finely divided powder of strontium oxide, pressing the mixture to form a compact, prefiring the compact at a temperature at about 1100 DEG C. in an oxygen containing atmosphere, and firing the prefired compact at a temperature of about 1650 DEG C. in an environment selected from the group consisting of vacuum and hydrogen.
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