Title:
PRODUCTION OF MATERIAL HAVING NANO-CRYSTAL STRUCTURE, SECONDARY POWDER AND MOLDED BODY
Document Type and Number:
Japanese Patent JPS63286501
Kind Code:
A
Abstract:
A process for the production of a secondary powder composition having a nanocrystalline structure and being comprised of binary or quasi-binary substances composed of at least one of the elements Y, Ti, Zr, Hf, Nb, Mo, Ta and W and at least one of the elements V, Cr, Mn, Fe, Co, Ni, Cu and Pd, optionally also containing further ingredients, such as Si, Ge, B and/or oxides, nitrides, borides, carbides, and their possible mixed crystals. The components are in powdered form and are mixed in elementary form or as pre-alloys and have particle sizes ranging from 2 to 250 mu m. The powder components are subjected to high mechanical forces in order to produce secondary powders having a nanocrystalline structure. The secondary powders obtained in this way can be processed into molded bodies according to known compression molding processes, but at a temperature below the recrystallization temperature.
Inventors:
BUORUFUGANGU SHIYURUNPU
Application Number:
JP9697988A
Publication Date:
November 24, 1988
Filing Date:
April 21, 1988
Export Citation:
Assignee:
KRUPP GMBH
International Classes:
B22F1/054; B22F3/00; B22F9/00; B22F9/04; C22C1/04; C22C1/05; C22C1/10; (IPC1-7): B22F1/00; C22C1/04; C22C1/05
Attorney, Agent or Firm:
Toshio Yano (1 outside)
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