Composite silicide/silicon carbide mechanical alloy

A substantially oxygen-free composite mechanical alloy powder comprising WSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(a) designated A and, optionally, a second phase admixed therewith.

A method for producing a substantially oxygen-free composite powder comprising NbSi.sub.2 and SiC comprising providing particles of niobium, silicon and carbon in a proportion relative to each other required to produce a composite powder of NbSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(b) designated A, and subjecting said particles to mechanical alloying under conditions and for a time sufficient to produce said composite powder.

A substantially oxygen-free composite mechanical alloy powder comprising NbSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(b) designated A and, optionally, a second phase admixed therewith.

A method for producing a substantially oxygen-free composite powder comprising ZrSi.sub.2 and SiC comprising providing particles of zirconium, silicon and carbon in a proportion relative to each other required to produce a composite powder of ZrSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(c) designated A, and subjecting said particles to mechanical alloying under conditions and for a time sufficient to produce said composite powder.

A substantially oxygen-free composite mechanical alloy powder comprising ZrSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(c) designated A and, optionally, a second phase admixed therewith.

A method for producing a substantially oxygen-free composite powder comprising TiSi.sub.2 and SiC comprising providing particles of titanium, silicon and carbon in a proportion relative to each other required to produce a composite powder of TiSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(d) designated A, and subjecting said particles to mechanical alloying under conditions and for a time sufficient to produce said composite powder.

A substantially oxygen-free composite mechanical alloy powder comprising TiSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(d) designated A and, optionally, a second phase admixed therewith.

A method for producing a substantially oxygen-free composite powder comprising WSi.sub.2, MoSi.sub.2 and SiC comprising providing particles of tungsten, molybdenum, silicon and carbon in a proportion relative to each other required to produce a composite powder of WSi.sub.2, MoSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(a) designated A wherein W represents tungsten and molybdenum, and subjecting said particles to mechanical alloying under conditions and for a time sufficient to produce said composite powder.

A substantially oxygen-free composite mechanical alloy powder comprising WSi.sub.2, MoSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 2(a) designated A wherein W represents tungsten and molybdenum and, optionally, said powder additionally containing a second phase.

A substantially oxygen-free composite mechanical alloy powder comprising MoSi.sub.2 and SiC having a composition in that segment of the ternary diagram of FIG. 1 designated A and admixed therewith a second phase.