As we tested sever times, it is better for compound powder to receive energy if W powder is adopted as raw material than WC. Because, WC is originally formed by W and C under high temperature. In the process of rising temperature, a considerable part of the WC will continue to gather in the solution before solid solution, thus resulting in uneven particle size. If the W powder is adopted and, as the temperature rises, a part of W dissolves into the TiC powder directly, and the other part, in the case of increasing the energy, combines with C to generate WC. This will inhibit the particle growth, so that the solid solution is more homogenous.
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