Publication: Research - peer-review › Journal article – Annual report year: 2011
The importance of foundry coating in improving the surface quality of castings cannot be over emphasized. The appli-cation of mould and core washes creates a high thermal integrity barrier between the metal and the mould resulting in the reduction of the thermal shock experienced by the sand system. These thermal shock leads to series of surface de-fects such as veining/finning, metal penetration, burn-on/in, scab, rat tail, erosion etc. The use of coatings reduces the tendency of occurrence of these defects. However, the understanding of the coating, its components, characteristics and mechanism of action is important. In this review, a detailed description of these topics and examples are provided where necessary. A potential area of research in foundry coating development, using sol-gel process is suggested. The application of sol-gel technology in the development of foundry coatings is a novel approach.
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- Sol-gel technology, Coating, Characterization, Application methods, Refractory materials
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