氮化铝粉末的生产工艺

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1、文献检索的作业实习：专利文献检索实习目的：了解专利文献检索的方法实习要求：能用多种途径进行专利文献检索实习设备：计算机实习内容：1、氮化铝粉末的生产工艺（国外专题数据库）（1）、Rareearth-activatedaluminumnitridepowdersandmethodofmakingInventorsBINGHANUSJONATHANTAPUSMADISRAUKASUSApplicantsOSRAMSYLVANIAINCUSPriorityUS763689P  31-Jan-2006ClassificationsInternational(2006.01):C0

2、4B35/00European:C04B35/581;C01B21/072;C09K11/08J;C09K11/77D;C09K11/77N6;C09K11/77P6;C09K11/77T6AbstractRareearth-activatedaluminumnitridepowdersaremadeusingasolution-basedapproachtoformamixedhydroxideofaluminumandarareearthmetal,themixedhydroxideisthenconvertedintoanammoniummetalfluoride,

3、preferablyarareearth-substitutedammoniumaluminumhexafluoride((NH4)3Al1-xRExF6),andfinallytherareearth-activatedaluminumnitrideisformedbyammonolysisoftheammoniummetalfluorideatahightemperature.Theuseofafluorideprecursorinthisprocessavoidssourcesofoxygenduringthefinalammonolysisstepwhichisa

4、majorsourceofdefectsinthepowdersynthesisofnitrides.Also,becausethealuminumnitrideisformedfromamixedhydroxideco-precipitate,thedistributionofthedopantsinthepowderissubstantiallyhomogeneousineachparticle.（2）、ALUMINUMNITRIDESINTEREDBODYANDMETHODOFPRODUCINGTHESAME9公开号US5482905申请号US/08/178642申

5、请人SUMITOMOELECTRICINDUSTRESLTDSUMITOMOELECTRICINDUSTRIESLTD发明人NAKAAHATASEIJIAMATSUURATAKAHIROSOGABEKOUICHIYAMAKAWAAKIRAHATASEIJIMATSUURATAKAHIROSOGABEKOUICHIYAMAKAWAAKIRA申请日期1994-01-05授权日期1996-01-09国际分类C04B35/58C04B35/58  美国专利分类501/98.4501/98.4  代理人Bierman;JordanB.BiermanandMuserlianman;J

6、ordanB.BiermanandMuserlian摘要AnaluminumnitridesinteredbodycomprisingaluminumnitridecrystalsbelongingtoaWurtzitehexagonalcrystalsystemwhereinthe3axesa,bandcoftheunitlatticeofthecrystalaredefinedsuchthattheratiob/aofthelengthsoftheaxesbandais1.000nearthecenterofthecrystalgrainandlieswithinth

7、erange0.997-1.003inthevicinityofthegrainboundaryphase.Aluminumnitridesinteredbodyisproducedbysinteringamoldedbodyofarawmaterialpowderhavingaluminumandnitrogenasitsprincipalcomponentsatatemperatureof1700.degree.-1900.degree.C.inanon-oxidizingatmospherehavingapartialp