Title:
HEAT RADIATING MATERIAL AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2001288526
Kind Code:
A
Abstract:
To provide a high thermal conductivity and low thermal expansion heat radiating material composed of a heat radiating material low in thermal expansion and having high thermal conductivity in particular a material composed of an easily and efficiently producible Al-Si series material, and also provide its production method.
An Al-Si alloy containing, by weight, 13 to 80% Si is rapidly cooled at a rate of 300 to 800 K/sec and is molded by a diecasting method, by which the high thermal conduction and low thermal expansion heat radiating material in which the crystal grain size of an Si phase is ≤50 μm, the thermal expansion coefficient is ≤16×10-6/K, and the thermal conductivity is ≥100/m.K can be obtained.
Inventors:
SADATOMI NOBUHIRO
YAMASHITA OSAMU
SAIGO TSUNEKAZU
YAMASHITA OSAMU
SAIGO TSUNEKAZU
Application Number:
JP2000101801A
Publication Date:
October 19, 2001
Filing Date:
April 04, 2000
Export Citation:
Assignee:
SUMITOMO SPEC METALS
International Classes:
B22D17/00; B22D17/32; C22C1/02; C22C21/02; H01L23/373; (IPC1-7): C22C21/02; B22D17/00; B22D17/32; C22C1/02; H01L23/373
Attorney, Agent or Firm:
Shigenobu Ikejou (1 person outside)