Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HIGH CARBON NANO CRYSTALLINE IRON ALLOY POWDER AND BULK MATERIAL HAVING HIGH HARDNESS, AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/092542
Kind Code:
A1
Abstract:
A nano crystalline high carbon iron alloy powder having high hardness, which comprises aggregates of high carbon iron nano crystal grains and containing 3.6 to 6.7 mass % of carbon, wherein a material reinforcing the ferrite phase in the above nano crystals is dispersed and precipitated; and a nano crystalline high carbon iron bulk material having high hardness, high strength and high toughness, which comprises a great number of above grains being firmly bound with one another. The above nano crystalline high carbon iron alloy powder of high hardness comprising aggregates of high carbon iron alloy nano crystal grains is of extremely high hardness and of high toughness, and is produced by subjecting a component material for forming a high carbon iron alloy containing 3.6 to 6.7 mass % of carbon to mechanical milling (MM) or mechanical allowing (MA), and the above nano crystalline high carbon iron alloy bulk material having high hardness, high strength and high toughness can be easily produced from said powder by subjecting the powder to solidification and forming.

Inventors:
MIURA HARUMATSU (JP)
MIYAO NOBUAKI (JP)
ODA KAZUO (JP)
MIZUTANI MASARU (JP)
OGAWA HIDENORI (JP)
KATSUMURA MUNEHIDE (JP)
ARAKI TAKAO (JP)
HIROTA MASAYUKI (JP)
MURAKAMI KEIICHI (JP)
MURAKAMI AKIHIRO (JP)
HIRAHARA TSUKASA (JP)
ITO TOSHIO (JP)
KISHI TORU (JP)
Application Number:
PCT/JP2005/006559
Publication Date:
October 06, 2005
Filing Date:
March 29, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NANO TECHNOLOGY INST INC (JP)
MIURA HARUMATSU (JP)
MIYAO NOBUAKI (JP)
ODA KAZUO (JP)
MIZUTANI MASARU (JP)
OGAWA HIDENORI (JP)
KATSUMURA MUNEHIDE (JP)
ARAKI TAKAO (JP)
HIROTA MASAYUKI (JP)
MURAKAMI KEIICHI (JP)
MURAKAMI AKIHIRO (JP)
HIRAHARA TSUKASA (JP)
ITO TOSHIO (JP)
KISHI TORU (JP)
International Classes:
B22F1/00; C22C33/02; C22C37/00; F16H55/06; F16C33/32; F16C33/34; (IPC1-7): B22F1/00; C22C33/02; C22C37/00
Foreign References:
JPS63286501A1988-11-24
JP2001158934A2001-06-12
JPH06322470A1994-11-22
Attorney, Agent or Firm:
Murata, Yukio (Kita-yaesu Bldg. 3rd Floor 2-11, Nihonbashi 3-Chom, Chuo-Ku Tokyo 27, JP)
Download PDF: