Document Type and Number:
Japanese Patent JPH0517297
Kind Code:
B2
Abstract:
PURPOSE:To obtain a sintered body having high hardness, superior wear resistance, toughness, heat resistance and superior strength at high temp. by specifying the compositions of binding phases, the volume ratio between the components of a hard phase and the grain sizes of the components in a diamond-CBN type sintered body contg. a cermet or ceramic binding phase. CONSTITUTION:The titled sintered body consists of 3-40vol% of the 1st binding phase consisting of one or more kinds of components selected among the carbides, nitrides, carbonitrides and borides of Ti, Zr, Hf, V, Nb and Ta, the carbides and borides of Cr, Mo and W Al nitride and solid solns. thereof, 2- 15vol% of the 2nd binding phase consisting of one or more kinds of metals selected among Al, Si, B, Ni, Co, Fe, Mg, Mn, Cr, Ti, Zr and Hf, an alloy and an intermetallic compound, and the balance hard phase consisting of high density boron nitride (CBN) and diamond (D). The vol% of CBN is higher than that of D, and the average grain size of CBN is smaller than that of D.
Inventors:
SHIMODA HIROSHI
OOTANI KOZUI
YAMAYA RYO
YAGI MASARU
OOTANI KOZUI
YAMAYA RYO
YAGI MASARU
Application Number:
JP15073783A
Publication Date:
March 08, 1993
Filing Date:
August 18, 1983
Export Citation:
Assignee:
TOSHIBA TUNGALOY CO LTD
International Classes:
C22C1/05; C22C26/00; C22C29/16
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