PROCESSES FOR PRODUCTION OF ULTRAFINE PARTICLES OF PURE METALS AND ALLOYS

摘要

With the purpose of proposing processes for efficient production of ultrafine particles of pure metals and alloys which enable the use of inexpensive raw materials, the invention provides a process for the production of ultrafine particles of pure metals which comprises heating a raw material containing a metal chloride and reducing the thus generated metal chloride vapor with hydrogen gas, wherein the raw material further contains a simple substance of the metal constituting the metal chloride and the metal chloride used as a part of the raw material is one having a larger valence among those having two or more valences; and a process for production of ultrafine particles of alloys, wherein among the components of the alloy, one to (the number of the components - 1) of the components are contained in the raw material in the form of metal chlorides and the others in the form of simple substances.