Microstructure and mechanical properties of B6O-B4C sintered composites prepared under high pressure

被引：42

作者：

Itoh, H ^{[1
]}

Maekawa, I

Iwahara, H

机构：

[1] Nagoya Univ, Res Ctr Adv Waste & Emiss Management, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Ctr Integrated Res Sci & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2000年 / 35卷 / 03期

关键词：

D O I：

10.1023/A:1004753116816

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sintered composites in the B6O-xB(4)C (x = 0-40 vol%) system were prepared under high pressure and high temperature conditions (3-5 GPa, 1500-1800 degrees C) from the mixture of in-laboratory synthesized B6O powder and commercially available B4C powder. Relationship among the formed phases, microstructures and mechanical properties of the sintered composites was investigated as a function of sintering conditions and added B4C content. Microhardness of the sintered composite was found to increase with treatment temperature up to 1800 degrees C, while fracture toughness decreased slightly. Maximum microhardness of Hv similar to 46 GPa was obtained from B6O-30vol%B4C sintered composite under the sintering conditions of 4 GPa, 1700 degrees C and 20 min. (C) 2000 Kluwer Academic Publishers.

引用

页码：693 / 698

页数：6

共 23 条

[1] SUPERHARD MATERIAL COMPARABLE IN HARDNESS TO DIAMOND [J].

BADZIAN, AR .

APPLIED PHYSICS LETTERS, 1988, 53 (25) :2495-2497

[2]

BOLMGREN H, 1991, AIP CONF PROC, V231, P197, DOI 10.1063/1.40868

[3] HOT-PRESSING OF BORON SUBOXIDE B12O2 [J].

BRODHAG, C ;

THEVENOT, F .

JOURNAL OF THE LESS-COMMON METALS, 1986, 117 (1-2) :1-6

[4] High-pressure, high-temperature syntheses in the B-C-N-O system - II. Electron energy-loss spectroscopy (EELS) [J].

Garvie, LAJ ;

Hubert, H ;

Petuskey, WT ;

McMillan, PF ;

Buseck, PR .

JOURNAL OF SOLID STATE CHEMISTRY, 1997, 133 (02) :365-371

[5] High-pressure, high-temperature syntheses in the B-C-N-O system - I. Preparation and characterization [J].

Hubert, H ;

Garvie, LAJ ;

Buseck, PR ;

Petuskey, WT ;

McMillan, PF .

JOURNAL OF SOLID STATE CHEMISTRY, 1997, 133 (02) :356-364

[6] High-pressure, high-temperature synthesis and characterization of boron suboxide (B6O) [J].

Hubert, H ;

Garvie, LAJ ;

Devouard, B ;

Buseck, PR ;

Petuskey, WT ;

McMillan, PF .

CHEMISTRY OF MATERIALS, 1998, 10 (06) :1530-1537

[7] Icosahedral packing of B12 icosahedra in boron suboxide (B6O) [J].

Hubert, H ;

Devouard, B ;

Garvie, LAJ ;

O'Keeffe, M ;

Buseck, PR ;

Petuskey, WT ;

McMillan, PF .

NATURE, 1998, 391 (6665) :376-378

[8]

Itoh H., 1998, Journal of the Society of Materials Science, Japan, V47, P1000, DOI 10.2472/jsms.47.1000

[9] Preparation of TiB2-B4C composites by high pressure sintering [J].

Itoh, H ;

Sugiura, K ;

Iwahara, H .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 232 (1-2) :186-191

[10] REACTION SINTERING OF CUBIC BORON-NITRIDE USING VOLATILE CATALYSTS [J].

ITOH, H ;

TAKAO, H ;

IWAHARA, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1993, 76 (11) :2889-2895

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