Process for the production of multilayered bulk materials

摘要

The present invention relates to a process of the production of multilayered bulk materials. A plurality of constituting powders of a desired multilayered material are mixed at a predetermined ratio, particle of the powders being smaller than 100 mu m in size. The powder mixture is mechanically alloyed for a predetermined period of time by using a high-energy ball mill in an argon-filled glove box. The mechanically alloyed powder is loaded in a mold and is then hot-pressed under a uniaxial compressive pressure at a predetermined temperature, resulting in a composition having multilayered structure. The process according to the present invention provides an effective way of overcoming thickness limitations of conventional multilayered materials and enabling low-cost mass production of multilayered materials.