Pure titanium casting into titanium-modified calcia-based and magnesia-based investment molds

Calcia is the most stable oxide for molten titanium at high temperature. In this study, pure titanium casting into calcia- and magnesia-based investments was investigated. Experimental results show that adding the proper amount of titanium powder into calcia- and magnesia-based investments can incre...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2007-04, Vol.454, p.178-182
Main Authors: Hung, C.C., Lai, P.L., Tsai, C.C., Huang, T.K., Liao, Y.Y.
Format: Article
Language:English
Subjects:
Applied sciences
Calcia investment
Casting
Exact sciences and technology
Foundry engineering
Magnesia investment
Metals. Metallurgy
Other casting methods. Solidification
Production techniques
Pure titanium
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Summary:Calcia is the most stable oxide for molten titanium at high temperature. In this study, pure titanium casting into calcia- and magnesia-based investments was investigated. Experimental results show that adding the proper amount of titanium powder into calcia- and magnesia-based investments can increase the thermal expansion value, at 800 °C, of both investments. Pure titanium castings in the calcia-based group have better expression at the interface reactivity and the VH. However, castings in magnesia-based group have better results for the investing and the dimensional accuracy.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2006.11.044