Effect of Sintering Temperature on the Grain Size and Mechanical Properties of Al2O3-SiC Nanocomposites

被引：18

作者：

Moradkhani, Alireza ^{[1
]}

Baharvandi, Hamidreza ^{[2
]}

Naserifar, Ali ^{[1
]}

机构：

[1] Islamic Azad Univ, Art & Architecture Fac, Yadegar E Imam Khomeini RAH Shahre Rey Branch, Tehran 158751774, Iran

[2] Malek Ashtar Univ Technol, Fac Mat & Mfg Proc, Tehran, Iran

来源：

JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2019年 / 56卷 / 03期

关键词：

Alumina; Silicon Carbide; Nanocomposite; Sintering Temperature; Mechanical Properties; FRACTURE-TOUGHNESS; INDENTATION FRACTURE; ALUMINA; MICROSTRUCTURE; COMPOSITES; CERAMICS; BEHAVIOR; HARDNESS;

D O I：

10.4191/kcers.2019.56.3.01

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：

In this research, some mechanical properties of Al2O3-based composites containing nanoSiC and nanoMgO additives, including elasticity modulus, hardness, and fracture toughness, have been evaluated. Micron-sized Al2O3 powders containing 0.08 wt.% nanoMgO particles have been mixed with different volume fractions of nanoSiC particles (2.5 to 15 vol.%). Untreated samples have been sintered by using hot-press technique at temperatures of 1600 to 1750 degrees C. The results show significant increases in the mechanical characteristics with increases in the sintering temperature and amount of nanoSiC particles, with the result that the elasticity modulus, hardness, and fracture toughness were obtained as 426 GPa, 21 GPa, and 4.5 MPa.m(1/2), respectively.

引用

页码：256 / 268

页数：13

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