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公开(公告)号:US5962630A
公开(公告)日:1999-10-05
申请号:US984048
申请日:1997-12-03
CPC分类号: B09B3/0033 , G21F9/307 , C08L23/02 , C08L23/04
摘要: A method of encapsulating mixed waste in which a thermoplastic polymer having a melting temperature less than about 150.degree. C. and sulfur and mixed waste are mixed at an elevated temperature not greater than about 200.degree. C. and mixed for a time sufficient to intimately mix the constituents, and then cooled to a solid. The resulting solid is also disclosed.
摘要翻译: 一种封装混合废物的方法,其中熔融温度低于约150℃的热塑性聚合物和硫和混合废料在不高于约200℃的高温下混合并混合足以充分混合的时间 成分,然后冷却至固体。 还公开了所得固体。
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公开(公告)号:US5006142A
公开(公告)日:1991-04-09
申请号:US500352
申请日:1990-03-28
IPC分类号: C03C3/11
CPC分类号: C03C3/111
摘要: The invention is a process for the preparation of high quality oxynitride glasses without resorting to high pressures. Nitrogen-containing compounds such as Si.sub.3 N.sub.4 are first encapsulated in a low melting temperature glass. Particles of the encapsulated nitrogen-containing compound are mixed with other oxide glass-formers and melted in an atmosphere of flowing nitrogen and in the presence of buffering gas to form the oxynitride glass. Glasses containing up to 15 at % nitrogen have been prepared by this method.
摘要翻译: 本发明是一种制备高品质氮氧化物玻璃而不求助于高压的方法。 首先将含氮化合物如Si 3 N 4封装在低熔点玻璃中。 将包封的含氮化合物的颗粒与其它氧化物玻璃形成物混合,并在氮气气氛和缓冲气体存在下熔融,形成氮氧化物玻璃。 通过该方法制备含有多达15at%氮的玻璃。
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公开(公告)号:US5316988A
公开(公告)日:1994-05-31
申请号:US100888
申请日:1993-08-02
申请人: Michael H. O'Brien , Blair H. Park
发明人: Michael H. O'Brien , Blair H. Park
IPC分类号: C04B35/597 , C04B35/58
CPC分类号: C04B35/597
摘要: A method of fabricating a SiAlON ceramic body includes: a) combining quantities of Si.sub.3 N.sub.4, Al.sub.2 O.sub.3 and CeO.sub.2 to produce a mixture; b) forming the mixture into a desired body shape; c) heating the body to a densification temperature of from about 1550.degree. C. to about 1850.degree. C.; c) maintaining the body at the densification temperature for a period of time effective to densify the body; d) cooling the densified body to a devitrification temperature of from about 1200.degree. C. to about 1400.degree. C.; and e) maintaining the densified body at the devitrification temperature for a period of time effective to produce a .beta.'-SiAlON crystalline phase in the body having elemental or compound form Ce incorporated in the .beta.'-SiAlON crystalline phase. Further, a SiAlON ceramic body comprises: a) an amorphous phase; and b) a crystalline phase, the crystalline phase comprising .beta.'-SiAlON having lattice substituted elemental or compound form Ce.
摘要翻译: 制造SiAlON陶瓷体的方法包括:a)将Si 3 N 4,Al 2 O 3和CeO 2的组合量混合以产生混合物; b)将混合物形成所需的体形; c)将本体加热至约1550℃至约1850℃的致密化温度。 c)将身体保持在致密化温度下一段有效的时间以使身体致密化; d)将致密体冷却至约1200℃至约1400℃的失透温度; 并且e)将致密体保持在失透温度下一段时间,以有效地在体内具有并入β-SiAlON结晶相中的元素或化合物形式的Ce中的β'-SiAlON结晶相。 此外,SiAlON陶瓷体包括:a)非晶相; 和b)结晶相,所述结晶相包含具有晶格取代的元素或化合物形式的Ce的β-SiAlON。
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