Diffusion bonding of alumina using interlayer of mixed hydride nano powders

被引：15

作者：

Hosseinabadi, Navid ^{[1
]}

Sarraf-Mamoory, Rasoul ^{[1
]}

Hadian, Ali Mohammad ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Dept Mat Engn, Tehran, Iran

[2] Univ Tehran, Sch Met, Tehran, Iran

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 02期

关键词：

Al2O3; Diffusion bonding; Hydride; Alanate; Nanopowder; TRANSIENT LIQUID-PHASE; STAINLESS-STEEL; COPPER; ALLOY; OXIDE;

D O I：

10.1016/j.ceramint.2013.10.006

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 study, mixed hydride/alanate nano powders in the Al-Mg system were used as the interlayer for low temperature diffusion bonding of dense alumina parts. Decomposition of hydride nanopowders at bonding temperatures in-situ formed metals and alloys nano particles with oxide free surfaces and high sinter-ability in the interlayer. Nano powders sintering behavior in the interlayer and formation of compounds in the reaction layer during diffusion bonding were studied. Mixture of 50-50 M ratio of AlH3 and Mg(AlH4)(2), as the interlayer improved bond strength of the joints. Diffusion bonding products were formed in the MgO-Al2O3 spinel system with different stoichiometries. Bond strength improved up to 202 MPa by induction hot pressing alumina parts at low bonding temperature of 400 degrees C under pressure of 20 MPa during 30 min bonding period. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：3011 / 3021

页数：11

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