纳米α-Al_2O_3的爆轰合成实验及烧结特性研究  

Synthesis experiment and study on sintering character of nanometer α-Al_2O_3 obtained by detonation

作　　者：李瑞勇[1] 李晓杰[1] 曲艳东[1] 陈涛[1] 谢兴华[1] 王占磊[1] 

机构地区：[1]大连理工大学工程力学系工业装备结构分析国家重点实验室,大连116023

出　　处：《功能材料与器件学报》2006年第3期241-243,共3页Journal of Functional Materials and Devices

基　　金：辽宁省自然科学基金资助项目(No.20042161)

摘　　要：采用水胶炸药爆轰的方法制备了纳米α—Al2O3。定性地研究了在不同烧结温度下纳米α—Al2O3的烧结特性。发现在烧结的过程中纳米α—Al2O3在300～900℃的温度区间内晶粒度是逐渐长大的，长大的幅度不大。但从900％开始到1000℃该纳米α—Al2O3的晶粒度是又突然细化，而且细化的幅度很大。过了1000℃后晶粒度又开始长大，长大的幅度比第一次长大的幅度大很多。A water- gel explosive was detonated to synthesize nanometer α - aluminum oxide. The sinte- ring characteristic of the nanometer α - aluminum oxide was analyzed qualitatively under different temperatures. From 300℃ to 900℃, the crystal granularity increases slowly, the degree of growth is not great. But from 900℃ to 1000℃, the crystal granularity becomes finer remarkably. After 1000℃ the crystal granularity increases again, the degree of growth is greater than before.

关 键 词：爆轰 纳米α—Al2O3 烧结 晶粒度 细化+ 

分 类 号：O381[理学—流体力学] TB383[理学—力学]