机械工程学报

LIU Cuirong
College of Material Science and
Engineering,
Taiyuan University of Technology,
Taiyuan 030024, China

College of Material Science and
Engineering,
Taiyuan University of Science and
Technology,
Taiyuan 030024, China

MENG Qingsen

LU Xiaoying

HU Lifang
College of Material Science and
Engineering,
Taiyuan University of Technology,
Taiyuan 030024, China

JOINING MECHANISMS OF b²-Al₂O₃ CERAMIC AND PYREX GLASS TO Al MATRIX COMPOSITE

Abstract: The bonding of b²-Al₂O₃ and pyrex glass to Al matrix composites by anodic bonding process is achieved. The microstructure of the bonded interface and the joining mechanisms are analyzed with scanning electron microscope (SEM), energy dispersive X-ray fluorescence spectrometer (EDX). It is observed that the bonding region across the interface consists of the metal layer, oxide transitional layer and the ceramic layer, with the transitional layer composed of surface region and sub-surface region. The bonding process can mainly be categorized into anodic bonding process and solid state diffusing process. The pile-up of the ions and its drift in the interface area are the main reasons for anode oxidation and joining of the interface. The temperature, voltage and the drift ions in the ceramic or glass during the bonding process are the essential conditions to solid state diffusing and oxide bonding at the interface. The voltages, temperature, pressure as well as the surface state are the main factors that influence the anodic bonding.

Key words:b²-Al₂O₃ Pyrex glass Al matrix composite Anodic bonding

* This project is supported by National Natural Science Foundation of China (No. 50375105, No. 50671070). Received October 8, 2007; received in revised form February 26, 2008; accepted March 8, 2008

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Biographical notes

LIU Cuirong is currently a professor in College of Material Science and Engineering, Taiyuan University of Science and Technology, China, and is a PhD candidate in Taiyuan University of Technology, China. Her research interests include welding materials and technology. She has published more than 20 papers.
Tel: +86-351-6998295; E-mail: tyustlcr@hotmail.com

MENG Qingsen is a professor in College of Material Science and Engineering, Taiyuan University of Technology, China. He received his PhD degree from Xi’an Jiaotong University, China, in 2002. Now he studies the bonding mechanism of solid state bonding and won a national scientific award. His papers published are more than 60.

LU Xiaoying is a postgraduate of Material Science and Engineering, Taiyuan University of Technology, China. Her research interests include anodic bonding and welding technology.

HU Lifang is a postgraduate of Material Science and Engineering, Taiyuan University of Technology, China. His research interests include anodic bonding and welding materials.

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