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1. 发明专利

DE69014793T2 未知
公开(公告)号：DE69014793T2
公开(公告)日：1995-06-14
申请号：DE69014793
申请日：1990-09-14
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , MATSUHIRO KEIJI
IPC分类号： C04B35/645 , C04B35/80 , C04B35/64
摘要： A sintered ceramic composite body is manufactured by preparing a powdery mixture composed of a base material composed of either one of oxide ceramic such as alumina, mullite, magnesia, or the like, and nonoxide ceramic such as silicon nitride, sialon, or the like, and a reinforcement material composed of particles or platelet particles of silicon carbide which have a size ranging from 5 to 20 mu m, the particles of silicon carbide being contained at a volume ratio ranging from 3 to 50 %. The platelet particles have a maximum diameter ranging from 5 to 50 mu m and a thickness which is 1/3 or less of the maximum diameter. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400 to 1,900 DEG C for the base material which is composed of oxide ceramic or in a temperature range from 1,500 to 2,000 DEG C for the base material which is composed of nonoxide ceramic. The body has high toughness.

2. 发明专利

DE69213802T2 未知
公开(公告)号：DE69213802T2
公开(公告)日：1997-02-27
申请号：DE69213802
申请日：1992-04-08
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , ENDO YASUYUKI , KOBAYASHI HIROMICHI , SAKAI HIROAKI , OHI HIROYUKI
IPC分类号： C04B41/50 , C04B41/87 , C23C4/10 , F01D5/28

3. 发明专利

DE69213802D1 未知
公开(公告)号：DE69213802D1
公开(公告)日：1996-10-24
申请号：DE69213802
申请日：1992-04-08
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , ENDO YASUYUKI , KOBAYASHI HIROMICHI , SAKAI HIROAKI , OHI HIROYUKI
IPC分类号： C04B41/50 , C04B41/87 , C23C4/10 , F01D5/28

4. 发明专利

DE69011447T2 未知
公开(公告)号：DE69011447T2
公开(公告)日：1995-02-23
申请号：DE69011447
申请日：1990-09-14
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , MATSUHIRO KEIJI
IPC分类号： C04B35/645 , C04B35/80 , C04B35/64
摘要： A sintered ceramic composite body is manufactured by preparing a powdery mixture composed of a base material composed of either one of oxide ceramic such as alumina, mullite, magnesia, or the like, and nonoxide ceramic such as silicon nitride, sialon, or the like, and a reinforcement material composed of particles of silicon carbide which have a size of 1 mu m or less and a size ranging from 5 to 20 mu m, or have a size of 1 mu m or less and platelet silicon carbide particles having a maximum diameter ranging from 5 to 50 mu m and a thickness which is 1/3 or less of the maximum diameter, the particles of silicon carbide being contained at a volume ratio ranging from 10 to 50 %. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400 to 1,900 DEG C for the base material which is composed of oxide ceramic or in a temperature range from 1,500 to 2,000 DEG C for the base material which is composed of nonoxide ceramic. The body has high toughness.

5. 发明专利

DE69014793D1 未知
公开(公告)号：DE69014793D1
公开(公告)日：1995-01-19
申请号：DE69014793
申请日：1990-09-14
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , MATSUHIRO KEIJI
IPC分类号： C04B35/645 , C04B35/80 , C04B35/64
摘要： A sintered ceramic composite body is manufactured by preparing a powdery mixture composed of a base material composed of either one of oxide ceramic such as alumina, mullite, magnesia, or the like, and nonoxide ceramic such as silicon nitride, sialon, or the like, and a reinforcement material composed of particles or platelet particles of silicon carbide which have a size ranging from 5 to 20 mu m, the particles of silicon carbide being contained at a volume ratio ranging from 3 to 50 %. The platelet particles have a maximum diameter ranging from 5 to 50 mu m and a thickness which is 1/3 or less of the maximum diameter. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400 to 1,900 DEG C for the base material which is composed of oxide ceramic or in a temperature range from 1,500 to 2,000 DEG C for the base material which is composed of nonoxide ceramic. The body has high toughness.

6. 发明专利

DE69011447D1 未知
公开(公告)号：DE69011447D1
公开(公告)日：1994-09-15
申请号：DE69011447
申请日：1990-09-14
申请人： NGK INSULATORS LTD , TOKYO ELECTRIC POWER CO
发明人： FURUSE YUTAKA , MATSUHIRO KEIJI
IPC分类号： C04B35/645 , C04B35/80 , C04B35/64
摘要： A sintered ceramic composite body is manufactured by preparing a powdery mixture composed of a base material composed of either one of oxide ceramic such as alumina, mullite, magnesia, or the like, and nonoxide ceramic such as silicon nitride, sialon, or the like, and a reinforcement material composed of particles of silicon carbide which have a size of 1 mu m or less and a size ranging from 5 to 20 mu m, or have a size of 1 mu m or less and platelet silicon carbide particles having a maximum diameter ranging from 5 to 50 mu m and a thickness which is 1/3 or less of the maximum diameter, the particles of silicon carbide being contained at a volume ratio ranging from 10 to 50 %. The powdery mixture is molded into a shaped product, which is then sintered in a temperature range from 1,400 to 1,900 DEG C for the base material which is composed of oxide ceramic or in a temperature range from 1,500 to 2,000 DEG C for the base material which is composed of nonoxide ceramic. The body has high toughness.

7. 发明专利

JPH0873288A CERAMIC COATING MEMBER AND ITS PRODUCTION 失效
公开(公告)号：JPH0873288A
公开(公告)日：1996-03-19
申请号：JP21099094
申请日：1994-09-05
申请人： TOKYO ELECTRIC POWER CO , NGK INSULATORS LTD
发明人： FURUSE YUTAKA , MATSUSHITA YOSHIAKI , KOBAYASHI HIROMICHI , TAKAHASHI TOMONORI
IPC分类号： C04B41/52 , C04B41/89
摘要： PURPOSE: To obtain a ceramic coating member excellent in heat resistance, thermal shock resistance, corrosion resistance and durability by applying silicon nitride or silicon carbide by CVD on the surface of a silicon nitride or silicon carbide ceramic base material and further applying an oxide thereon. CONSTITUTION: The silicon nitride or silicon carbide is applied by CVD on the surface of the silicon nitride or silicon carbide ceramic base material. And the oxide coating film composed of at least two layers of a substrate and a surface layer is formed by applying a zirconia paste or an alumina paste on the CVD coating film so as to make film thickness into, 10-35μm rising a temp. at =1450 deg.C for 10hr in the air. The substrate is composed of zircon or mullite formed by chemical reaction and the surface layer is composed of zirconia or alumina. The coating is executed >=1 times at need and the thickness of the oxide coating film is preferably 10-70μm in all.

8. 发明专利

JPH05238853A 失效
公开(公告)号：JPH05238853A
公开(公告)日：1993-09-17
申请号：JP4357792
申请日：1992-02-28
申请人： TOKYO ELECTRIC POWER CO , NGK INSULATORS LTD
发明人： FURUSE YUTAKA , ENDO YASUYUKI , TAKAHASHI TOMONORI , KOBAYASHI HIROMICHI
IPC分类号： C04B41/80
摘要： PURPOSE:To provide a surface modifying method of a ceramic substrate having good adhesion between the substrate and a coating layer without impairing strength of the ceramic substrate itself. CONSTITUTION:The surface of a ceramic substrate is subjected to mechanical processing, heat treatment or chemical treatment so that ten point average roughness (Rz) as the surface roughness of ceramic substrate may be >=1.5mum and average roughness of center line (Ra) may be >=0.15mum and then heat-treated in the air. Thereby, the surface of ceramic substrate can be roughed without impairing strength of the ceramic substrate itself and adhesion between the surface-roughed substrate and a coating layer and adhesion after heat cycle are improved.

9. 发明专利

JPH03103367A CERAMIC COMPOSITE SINTERED COMPACT AND PRODUCTION THEREOF 失效
公开(公告)号：JPH03103367A
公开(公告)日：1991-04-30
申请号：JP24313189
申请日：1989-09-18
申请人： TOKYO ELECTRIC POWER CO , NGK INSULATORS LTD
发明人： FURUSE YUTAKA , MATSUHIRO KEIJI
IPC分类号： C04B35/584 , C04B35/10 , C04B35/18 , C04B35/58 , C04B35/599 , C04B35/78
摘要： PURPOSE:To obtain a ceramic composite sintered compact having high toughness at a low cost by blending a base material composed of oxide or nonoxide ceramics with a specific amount of a reinforcing material composed of silicon carbide fine particles having a prescribed particle diameter and sintering the resultant blend at a prescribed temperature. CONSTITUTION:(A) A base material composed of oxide ceramics, such as alumina, mullite or magnesia, or nonoxide ceramics, such as silicon nitride or sialon, is mixed with (B) a reinforcing material composed of silicon carbide particles having 5-20mum size in an amount of 3-50vol.% based on the component (A). The resultant mixed powder is then formed. If the base material is the oxide ceramics, the resultant compact is sintered at 1400-1900 deg.C. If the base material is the nonoxide ceramics, the compact is sintered at 1500-2000 deg.C. Thereby, a ceramic composite sintered compact is obtained. Toughness improving effects can be further obtained by using platy silicon carbide fine particles having 5-50mum maximum diameter and the thickness of

10. 发明专利

JPH06279975A CERAMIC COATED MEMBER AND ITS PRODUCTION 失效
公开(公告)号：JPH06279975A
公开(公告)日：1994-10-04
申请号：JP6855693
申请日：1993-03-26
申请人： TOKYO ELECTRIC POWER CO , NGK INSULATORS LTD
发明人： FURUSE YUTAKA , ENDO YASUYUKI , KOBAYASHI HIROMICHI , TAKAHASHI TOMONORI
IPC分类号： B05D3/00 , C04B41/50 , C04B41/87 , C23C4/10
摘要： PURPOSE:To improve the adhesion of a ceramic substrate to its coating layer and to produce a high reliability ceramic coated member excellent in a high temp. strength and heat resistance and having satisfactory oxidation and corrosion resistance. CONSTITUTION:An oxide is thermally sprayed on the surface of a substrate selected from among silicon carbide, silicon nitride and a silicon nitride composite material reinforced by dispersing silicon carbide to form a coating layer having

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