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Effect of Intermetallic Compounds on the Properties of Tantalum

Published online by Cambridge University Press:  25 February 2011

P. Kumar ,
C.E. Mosheim  and
C.A. Michaluk
P. Kumar
Affiliation:
CPM Division, Cabot Corporation, County Line Road, Boyertown, PA 19512
C.E. Mosheim
Affiliation:
CPM Division, Cabot Corporation, County Line Road, Boyertown, PA 19512
C.A. Michaluk
Affiliation:
CPM Division, Cabot Corporation, County Line Road, Boyertown, PA 19512
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Extract

While pure tantalum has excellent corrosion resistance and formability, its high temperature properties and thermal stability are marginal for some intended applications. Traditional approaches for improving these properties have been dispersion and solid solution strengthening. Modifications of properties via an intermetallic precipitation was not considered until recently.

Results of an on-going investigation on the processing and evaluation of silicidestrengthened tantalum are presented. Yttrium silicide-containing Tantalum samples were produced via the P/M method. Evaluation consisted of microstructural, mechanical, chemical and functional tests. Results were compared with those of commercially available tantalum. Intermetallics precipitates were found to be very potent in altering these properties.

While the preliminary results are encouraging, extensive functional testing is required to assure that there is no unexpected adverse effect.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 322: Symposium F – High-Temperature Silicides and Refractory Alloys , 1993 , 413
Copyright
Copyright © Materials Research Society 1994

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