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21. 发明专利

JPH066512B2 失效
公开(公告)号：JPH066512B2
公开(公告)日：1994-01-26
申请号：JP16946485
申请日：1985-07-31
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , INADA HIROSHI
IPC分类号： C04B35/584 , C04B35/58

22. 发明专利

JPH02212386A PRODUCTION OF ALUMINUM NITRIDE SINTERED BODY HAVING CONDUCTIVE METALLIZED LAYER 失效
公开(公告)号：JPH02212386A
公开(公告)日：1990-08-23
申请号：JP3332789
申请日：1989-02-13
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , YAMAUCHI NORIYOSHI
IPC分类号： C04B41/88 , C04B41/51
摘要： PURPOSE:To efficiently form a conductive metallized layer which is large in joining strength and uniform by performing calcination at specified temp. in the nonoxidative atmosphere of the inside of a closable vessel made of aluminum nitride in the case of producing the sintered body by a cosintering method. CONSTITUTION:The surface treating compositions 2 having high-m.p. metallic substance as a main component are stuck on at least single surface of the molded body 1 of AlN powder. This molded body 1 is housed in a closable vessel 3 made of AlN and calcined at 1500-2000 deg.C in the nonoxidative atmosphere. When this calcination temp. is lower than the above-mentioned range, sintering of AlN is made insufficient. When it is higher, decomposition of AlN is caused and wettability of the compositions 2 and the base material 1 is lowered. Further when the vessel 3 is unutilized, sintering defective is caused on the surface and the circumferential part of the molded body 1. Thereby ununiformity of sintering density and calcination contraction is caused and thereby deformation, etc., are caused. Further when a plate jig 5 made of AlN and/or BN as a main component is brought into contact with the compositions 2 and calcination is performed, a product excellent in smoothness is easily obtained.

23. 发明专利

JPH02212365A ALUMINUM NITRIDE SUBSTRATE AND ITS PRODUCTION 失效
公开(公告)号：JPH02212365A
公开(公告)日：1990-08-23
申请号：JP3332689
申请日：1989-02-13
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , YAMAUCHI NORIYOSHI
IPC分类号： C04B35/581 , C04B35/58 , H01L23/15 , H05K1/03
摘要： PURPOSE:To efficiently obtain an AlN substrate excellent in surface smoothness at a low cost by an ordinary-pressure sintering method while obviating the necessity of surface grinding work by placing a sheet-like AlN green compact to which rare earth elements are added on a sintered compact of AlN having smooth surface and then subjecting the above to sintering. CONSTITUTION:An AlN sintered compact in which density, thermal conductivity at room temp., and surface roughness Ra of unground sintered compact are regulated to >=3.20g/cm , >=70W/m.K, and

24. 发明专利

JPH01160873A HIGH-PURITY ALUMINUM NITRIDE ORDINARY-PRESSURE SINTERED COMPACT AND PRODUCTION THEREOF 失效
公开(公告)号：JPH01160873A
公开(公告)日：1989-06-23
申请号：JP31968487
申请日：1987-12-17
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , ISOBE TAKAMASA , KATO KEIZO , OTSUKA KENICHI , HIRANO TAKAO
IPC分类号： C04B35/626 , C04B35/581
摘要： PURPOSE:To obtain a high-purity AlN sintered compact having high density and excellent thermal conductivity and strength, by sintering an AlN powder having specific properties at ordinary pressure without adding any sintering auxiliary. CONSTITUTION:AlN powder having =3.225g/cm density or >=99.0% relative density to theoretical density, >=70W/m.K thermal conductivity at ambient temperature and >=25kgf/mm flexural strength at 20 deg.C and 1200 deg.C.

25. 发明专利

JPS62113768A METHOD OF SINTERING SILICON NITRIDE 失效
公开(公告)号：JPS62113768A
公开(公告)日：1987-05-25
申请号：JP25242285
申请日：1985-11-11
申请人： NORITAKE CO LTD
发明人： SAEKI KYOJI , HIRANO MASANORI
IPC分类号： C04B35/589 , C04B35/58

26. 发明专利

JPS6246959A HEAT-STABILITY-RESISTANT HIGH TOUGHNESS CERAMIC SINTERED BODY AND MANUFACTURE 失效
公开(公告)号：JPS6246959A
公开(公告)日：1987-02-28
申请号：JP18272685
申请日：1985-08-20
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , INADA HIROSHI
IPC分类号： C04B35/48 , G06F1/26

27. 发明专利

JP2517253B2 失效
公开(公告)号：JP2517253B2
公开(公告)日：1996-07-24
申请号：JP29199486
申请日：1986-12-08
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , KANI AKIRA , INADA HIROSHI
IPC分类号： C04B35/48

28. 发明专利

JP2517249B2 失效
公开(公告)号：JP2517249B2
公开(公告)日：1996-07-24
申请号：JP26706086
申请日：1986-11-10
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , KANI AKIRA , INADA HIROSHI
IPC分类号： C04B35/48

29. 发明专利

JPH06329481A CERAMICS-METAL COMPOSITE AND ITS PRODUCTION 失效
公开(公告)号：JPH06329481A
公开(公告)日：1994-11-29
申请号：JP14303393
申请日：1993-05-20
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , YAMAUCHI NORIYOSHI
IPC分类号： C04B37/02 , C04B41/88
摘要： PURPOSE:To prevent release of a metal layer from a ceramic sintered compact and the occurrence of crack by including a silver-copper-based alloy in a specific high melting point metal layer formed on the surface of the ceramic sintered compact. CONSTITUTION:Porous high-melting metal layers 34a to 34c having a number of open pores and continuously or stepwise making the pore ratio of the sintered compact larger as these pores become more distant from the surface of this sintered compact 16 are formed on at least a part of surface of the ceramic sintered compact 16 to form a metallized layer. Then, a silver-copper-based alloy is impregnated into these high melting point metal layers 34a to 34c. Thereby, a metal layer 34 continuously or stepwise making a ratio of silver- copper-based alloy content to high melting point metal content larger as the metal layer become more distant from the surface of the sintered compact 16 is formed.

30. 发明专利

JPH0615421B2 失效
公开(公告)号：JPH0615421B2
公开(公告)日：1994-03-02
申请号：JP19561385
申请日：1985-09-04
申请人： NORITAKE CO LTD
发明人： HIRANO MASANORI , INADA HIROSHI
IPC分类号： C04B35/18

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