Pressureless sintering of mullite/Mo composites

被引：2

作者：

Rani, DA ^{[1
]}

Jayaseelan, DD ^{[1
]}

Nishikawa, T ^{[1
]}

Awaji, H ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2001年 / 109卷 / 03期

关键词：

pressureless sintering; mullite/Mo composites; mechanical; microstructure;

D O I：

10.2109/jcersj.109.1267_274

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mullite of stoichiometric composition (3Al(2)O(3).2SiO(2)) is a highly attractive candidate material for structural applications. In this study, the effect of Mo addition to mullite matrix has been investigated. Mullite/Mo composites have been densified at 1600 degreesC for 2 h by pressureless sintering. Conditions have been made to sinter the samples in a non-oxidizing atmosphere. No traces of oxides have been identified by XRD analysis after polishing the specimens. Young's modulus increases with increase in Mo content and hardness decreases with the Mo content by obeying the rule of mixtures. Fracture toughness has been increased from 1.7 to 3.5 MPa.m(1/2) for the 30 vol%. Mo containing composites, which is twice that of monolithic mullite, Microstructures of the sintered samples were analyzed using SEM.

引用

页码：274 / 277

页数：4

共 14 条

[1]

BECHER PF, 1984, J AM CERAM SOC, V67, pC267, DOI 10.1111/j.1151-2916.1984.tb19694.x

[2] PROPERTIES AND MICROSTRUCTURE OF NI-ALUMINA COMPOSITE-MATERIALS PREPARED BY THE SOL-GEL METHOD [J].

BREVAL, E ;

DODDS, G ;

PANTANO, CG .

MATERIALS RESEARCH BULLETIN, 1985, 20 (10) :1191-1205

[3]

CLAUSSEN N, 1977, AM CERAM SOC BULL, V56, P559

[4]

Hing P., 1980, SCI CERAM, V10, P521

[5]

LACKEY WJ, 1987, ADV CERAM MATER, V2, P24

[6]

NAERHEIM Y, 1986, POWDER METALL INT, V18, P158

[7] FABRICATION AND MECHANICAL-BEHAVIOR OF AL2O3/MO NANOCOMPOSITES [J].

NAWA, M ;

SEKINO, T ;

NIIHARA, K .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (12) :3185-3192

[8] Microstructure and mechanical behaviour of 3Y-TZP/Mo nanocomposites possessing a novel interpenetrated intragranular microstructure [J].

Nawa, M ;

Yamazaki, K ;

Sekino, T ;

Niihara, K .

JOURNAL OF MATERIALS SCIENCE, 1996, 31 (11) :2849-2858

[9]

Niihara K., 1991, Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi, V99, P974, DOI 10.2109/jcersj.99.974

[10]

Schneider H., 1994, MULLITE MULLITE CERA

← 1 2 →