TiN-TiB2系のホットプレス焼結

概要

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This paper describes the effects of sintering conditions such as amount of TiB2 and temperature on the mechanical properties of TiN-TiB2 compacts, and describes the hot hardness, the fracture toughness Ktc and the resistance of oxidation of TiN-TiB2 compacts. The results were as follows: 1. TiN-TiB2 compacts, which contained 30-60 wt% TiB2, have high density and high transverse rupture strength. It is thought that the reasons of the high transverse rupture strength are reduced by the restraining of TiN grain growth and the high density. 2. TiN-30%TiB2 compacts have the transverse rupture strength of 700 MN/m2, the porosity of 0.34 vol%, the Vickers hardness of 1800 kg/mm2 at R.T. and of 990 kg/mm2 at 1233 K, and the fracture toughness K1c of 3 MPa⋅m1/2.
社団法人粉体粉末冶金協会の論文