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Practical Experiences with some principles pertinent to CIM

Authors
Journal
Journal of the European Ceramic Society
0955-2219
Publisher
Elsevier
Publication Date
Volume
17
Identifiers
DOI: 10.1016/s0955-2219(96)00127-6
Keywords
  • Plastic Forming
Disciplines
  • Chemistry

Abstract

Abstract Ceramic injection moulding (CIM) is a promising manufacturing process which attracts growing attention today. The basic principles pertinent to CIM are well known, but as there is a variety of viable manufacturing approaches the final results may be quite different. This paper highlights some practical experience with specific aspects of CIM. One requirement of the binder system is that its components must be chemically compatible with respect to ceramic powders. Stearic acid, a very popular binder constituent, may react with some ceramic powders and seriously disturb the process. A solution to this problem is presented. The imprints of knock out pins on injection moulded ceramic products may show flaws. The origin of and how to remedy this flaw type is discussed. Defect sensitivity is a major issue with ceramics. As well as other ceramic forming processes the injection moulding process may cause specific defects. Fracture strength of injection moulded silicon carbide is compared with data from literature. Some measures to improve the quality are discussed.

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