爆炸压实法制备纳米氧化铝弥散强化铜  

Preparation of Nano-Alumina Dispersion Strengthening Copper by Explosive Compaction

作　　者：赵铮[1] 李晓杰[2] 陶钢[1] 

机构地区：[1]南京理工大学,江苏南京210094 [2]大连理工大学,辽宁大连116024

出　　处：《稀有金属材料与工程》2009年第A01期365-369,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(10802038)

摘　　要：提出了一种制备优质廉价纳米氧化铝弥散强化铜的新工艺。首先采用机械合金化法制备氧化铝和铜的混合粉末,然后经过氢气还原烧结后得到氧化铝-铜的多孔体,最后采用爆炸压实方法制得氧化铝-铜块体初坯。检测结果表明,采用该工艺制得的氧化铝-铜初坯的相对密度达到了98%以上,纳米氧化铝颗粒均匀地弥散分布在铜基体中,很好地提高了材料的硬度与强度。A new preparation technology of high-quality and low-price nano-alumina dispersion strengthening copper was proposed. Firstly, mechanical alloying method was used to prepare alumina and copper mixed powder. Secondly, Al2O3-Cu porous body was obtained after sintering in hydrogen atmosphere. Finally, Al2O3-Cu bulk billet was obtained by explosive compaction. The detection results indicate the relative density of Al2O3-Cu bulk billet exceeds 98%, and nano-alumina particles dispersively distribute in copper matrix which greatly improves materials＇ hardness and strength.

关 键 词：爆炸压实 机械合金化 氧化铝-铜 弥散强化 

分 类 号：TB383.1[一般工业技术—材料科学与工程]