AlON phase formation in hot-pressing sintering Al2O3/AlN composites and their oxidation behavior

被引：17
作者：
Huang, Shifeng [1 ,2 ]
Gao, Feng [3 ]
Li, Qinggang [1 ,2 ]
Cheng, Xin [1 ,2 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China
[3] Shandong Agr Univ, Coll Informat Sci & Engn, Tai An 271018, Shandong, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 685卷
基金：
中国国家自然科学基金;
关键词：
Structural composites; Mechanical properties; Scanning electron microscopy (SEM); Heat treatment; PSEUDO-BINARY SYSTEM; CERAMICS; TRANSFORMATIONS; MICROSTRUCTURE; FABRICATION; EVOLUTION; ALN;
D O I：
10.1016/j.jallcom.2016.05.236
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Samples with various ratios of AlN/Al2O3 were fabricated via vacuum hot-pressing at 1700 degrees C under an applied pressure of 30 MPa for 90 min using Y2O3 as a sintering aid. The densification process, microstructural development, and formation of AlON phase from Al2O3 and AlN were investigated. Al2O3 additive can improve the physical and mechanical properties, and purification of the grain boundaries. AlON are almost formed completely when the content of Al2O3 is 80 vol%. The effects of composition, microstructure, and exposure time at 1400 degrees C on the oxidation behavior of AlN samples with different amounts of Al2O3 were investigated. The sample with 80 vol% alumina has the best oxidation resistance. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：309 / 315
页数：7
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