发明名称 |
Transparent aluminum oxynitride and method of manufacture |
摘要 |
An article of manufacture is provided comprising a polycrystalline cubic aluminum oxynitride having a density of at least 98% of theoretical density, and being transparent to electromagnetic radiation in the wavelength range from 0.3 to 5 micrometers with an in-line transmission of at least 20% in this range. A method of preparing the optically transparent aluminum oxynitride is also provided comprising the steps of forming a green body of substantially homogeneous aluminum oxynitride powder and pressureless sintering said green body in a nitrogen atmosphere and in the presence of predetermined additives which enhance the sintering process. Preferred additives are boron and yttrium in elemental or compound form.
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申请公布号 |
US4720362(A) |
申请公布日期 |
1988.01.19 |
申请号 |
US19850714223 |
申请日期 |
1985.03.20 |
申请人 |
RAYTHEON COMPANY |
发明人 |
GENTILMAN, RICHARD L.;MAGUIRE, EDWARD A.;DOLHERT, LEONARD E. |
分类号 |
C04B35/581;(IPC1-7):B29D11/00 |
主分类号 |
C04B35/581 |
代理机构 |
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代理人 |
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地址 |
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