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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

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Review of micromachining of ceramics by etching
H. T. TING1, K. A. ABOU-EL-HOSSEIN2, H. B. CHUA1

1. School of Engineering and Science, Curtin University of Technology (Sarawak Campus), 98009 Miri, Malaysia;
2. Department of Mechatronics, Nelson Mandela Metropolitan University, Port Elizabeth 6031, South Africa

Abstract:In the last two decades, there has been an enormous surge in interest in ceramic materials and, as a result, there have been significant advances in their development and applications. Their inherent properties, such as capability of operating at temperatures far above metals, high level of hardness and toughness, low coefficient of thermal expansion and high thermal conductivity rendered ceramics to be one of the leading engineering materials. Many research works have been conducted in the past few years on machining of advanced ceramics using different processing methods in order to obtain a better surface roughness, higher material removal rate and improved tool life. Micromachining using chemical etching is one of those methods that do not involve the problem of tool life and direct tool−work piece contact. However, only a few research works have been done on micromachining of ceramics using chemical etching. Hence, study of chemical machining of advanced ceramics is still needed as the process has found wide application in the industry because of its relative low operating costs. In this work, we summarize the recent progresses in machining of different types of advanced ceramics, material processing methods such as wet etching and dry etching, and finally the prospects for control of material removal rate and surface quality in the process of ceramic micromachining.

 

Key words: micromachining; ceramics; etching

ISSN 1672-7029
CN 43-1423/U

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