Abstract
The present work deals with the chemical removal of the α-case layer formed during precision casting of cellular TiAl6Nb7 sponges for biomedical applications. The major part of the brittle α-case layer can be attributed to chemical reaction between titanium and the investment mold components. To improve the ductility of the cell struts by eliminating the brittle surface, a pickling-vibration treatment was developed by which the α-case layer is chemically removed.
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