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Fabrication and Testing of Plasma-Spray Formed MoSi2 and MoSi2 Composite Tubes

Published online by Cambridge University Press:  25 February 2011

R.G. Castro ,
J.R. Hellmann ,
A.E. Segall  and
D.L. Shelleman
R.G. Castro
Affiliation:
Los Alamos National Laboratory, Materials Division, Los Alamos, NM 87545
J.R. Hellmann
Affiliation:
Pennsylvania State University, Center for Advanced Materials, University Park, PA 16802
A.E. Segall
Affiliation:
Pennsylvania State University, Center for Advanced Materials, University Park, PA 16802
D.L. Shelleman
Affiliation:
Pennsylvania State University, Center for Advanced Materials, University Park, PA 16802
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Abstract

Plasma-spray forming has been used to fabricate thick-wall tubes of Mosi2 and Mosi2 containing concentric layers of A12O3. This process is being investigated as a potential fabrication method for producing tubular components of Mosi2 and Mosi2 composites for use in high temperature fuel-burner applications. Results will be reported on the spray forming method used to produce tubes of various sizes. The room temperature strength of pure Mosi2 tubes in the as-deposited condition, and after heat-treating at 1500 °C for 2 hours in vacuum, will also be reported. The strength of plasma sprayed Mosi2 tubes were measured via diametral compression of 0-ring and C-ring sections in air at room temperature. Qualification of the strength distribution was based on Weibull statistical theory.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 322: Symposium F – High-Temperature Silicides and Refractory Alloys , 1993 , 81
Copyright
Copyright © Materials Research Society 1994

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