| US 7,648,675 B2 | ||
| Reaction sintered zirconium carbide/tungsten composite bodies and a method for producing the same | ||
| Shi C. Zhang, 1115 Sycamore Dr., Rolla, Mo. 65401 (US); Gregory E. Hilmas, 494 Countryside Dr., Rolla, Mo. 65401 (US); and William G. Fahrenholtz, 1014 Iron Horse Rd., Rolla, Mo. 65401 (US) | ||
| Filed on Oct. 06, 2006, as Appl. No. 11/539,384. | ||
| Prior Publication US 2009/0291011 A1, Nov. 26, 2009 | ||
| Int. Cl. C22C 1/05 (2006.01) | ||
| U.S. Cl. 419—17 | 22 Claims |
| 1. A method of sintering a first transition metal carbide/second transition metal matrix composite body at ambient pressures,
comprising in combination:
a) blending a first predetermined amount of X oxide powder with a second predetermined amount of QC powder;
b) mixing the blended powders to yield a substantially homogeneous powder mixture;
c) forming a portion of the substantially homogeneous powder mixture into a green body;
d) heating the green body to a first elevated temperature to form a partially sintered body which has reacted to form at least
some XC and Q phases; and
e) heating the partially sintered body to a second elevated temperature in an inert atmosphere to yield a substantially dense
sintered body;
wherein the substantially dense sintered body is substantially XC dispersed in a substantially Q matrix;
wherein X is a first transition metal; and
wherein Q is a second transition metal different from X.
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