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Effects of Cooling Method Followed by Casting on the Interfacial and Mechanical Properties of Dental CP-Ti Casts  

Moon, Soo (School of Advanced Materials Eng., Kookmin University)
Jung, Jun-Young (School of Advanced Materials Eng., Kookmin University)
Kim, Ki-Ju (ISAN BIOTECH R &D Center, Pohang Technopark)
Lee, Jin-Hyung (School of Advanced Materials Eng., Kookmin University)
Publication Information
Journal of Biomedical Engineering Research / v.24, no.5, 2003 , pp. 375-380 More about this Journal
Abstract
In this study. we have intended to control the properties of surface reaction zone generated between pure titanium and oxide investment moulds. Commercially pure titanium was centrifugally casted and silica$.$alumina based phosphate bonded investment was used as the mould material. The effect of cooling methods after casting on the surface reaction zone and mechanical properties of casts were investigated. The resulting casts showed the multilayered surface reaction zone regardless of cooling method. Especially. water cooling method produced the titanium casts with thinner surface reaction zone. weaker strength. and higher elongation properties compared to air cooling. It can thus be known that the resulting casts had satisfactory mechanical properties as dental materials. From these results, the cooling rate dependence of interfacial and mechanical properties can be attributed to the diffusion of oxygen from casting environment, which control the reaction of titanium and mould.
Keywords
CP-Titanium; Silica.alumina phosphate bonded investment; Centrifugual casting method; Cooling method;
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