Fabrication of W-ZrC Cermets by Reactive Melt Infiltration with Polycarbosilane as Preforms’ Adhesive

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Polycarbosilane (PCS) was introduced into preforms to prepare W-ZrC cermets by reactive melt infiltration (RMI). Properties and microstructure of the preforms and cermets were analyzed with XRD, SEM and EDS. The preforms had an open porosity of 42.0 %, and the WC particles were cemented by the pyrolysate of PCS. W-ZrC cermets were prepared by heating Zr2Cu covered preforms to 1300 °C for 3 h. XRD revealed that the resulting cermets were made up of W, ZrC and W2C. The cermets had an open porosity of 3.5 %, a flexural strength of 354.0 MPa, a flexural modulus of 192.5 GPa and a flexural toughness of 5.72 MPa·m1/2 .

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

819-822

DOI:

10.4028/www.scientific.net/MSF.675-677.819

Citation:

S. M. Zhang et al., "Fabrication of W-ZrC Cermets by Reactive Melt Infiltration with Polycarbosilane as Preforms’ Adhesive", Materials Science Forum, Vols. 675-677, pp. 819-822, 2011

Online since:

February 2011

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$35.00

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