| 摘要 |
The present invention relates to a process for the production of fine powder materials and the products of that process. The process involves the in-situ precipitation of second phase particles, such as ceramics or intermetallics, within a metal matrix, followed by separation of the particles from the matrix to yield a powder comprising the second phase particles. Particles formed by this process are typically in the size range of 0.01 to 10 microns and have controlled morphology, narrow size distribution, well defined stoichiometry and relatively high purity. Exemplary of second phase particles formed by this process are metal borides, carbides, nitrides, oxides, silicides and beryllides, including TiB2, ZrB2, VB2, MoB2, TiC, WC, VC, TiN, ZrSi2, MoSi2, Ti5Si3, and TiBe12. |
