| abstract |
This invention relates to a process for producing fine powder materials and its products. The method involves in-situ precipitation of second phase particles such as ceramics or intermetallic products, in a metallic matrix, followed by separation of the particles drawn from the matrix in order to produce a powder comprising the second phase particles. . The particles formed according to this process have a size typically between 0.01 and 10 microns and have a regulated morphology, a narrow particle size distribution, a well defined stoichiometry and a relatively high purity. By way of example, mention may be made of second phase particles formed according to this process, borides, carbides, nitrides, oxides, silicides and metallic beryl alloys, comprising TiB2, ZrB2, VB2, MoB2, TiC, WC, VC, TiN, ZrSi2, MoSi2, Ti5Si3, and TiBe12. |