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A new coating process in the powder preparation for a shell mold has been developed to increase the fracture strength of the shell mold. It is due to the homogeneous formation of a glass phase on the starting particles and the increase in the glassification efficiency by the reduction in the loss of inorganic precursors. The inorganic binder system used for the new coating process is composed of tetraethyl...
The convert mold process has been investigated, focusing on preparation of shell molds using different composite binder systems. The glassification efficiency of binder systems with different SiO 2 precursor structures were investigated in terms of the Si content and dipping time, and the subsequent effects on fracture strength. Two types of the SiO 2 precursor were used: tetraethyl...
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