Properties of Ti(C, N)-Mo2C-Ni Cermets Coated with Ti(C, N) by PVD Process

Hisashi Suzuki; Hideaki Matsubara; Akira Matsuo; Kunio Shibuki

doi:10.2497/jjspm.33.92

Properties of Ti(C, N)-Mo₂C-Ni Cermets Coated with Ti(C, N) by PVD Process

Hisashi Suzuki, Hideaki Matsubara, Akira Matsuo, Kunio Shibuki

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JOURNAL OPEN ACCESS

1986 Volume 33 Issue 2 Pages 92-97

DOI https://doi.org/10.2497/jjspm.33.92

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Published: February 25, 1986 Received: February 19, 1985 Available on J-STAGE: May 22, 2009 Accepted: February 19, 1985 Advance online publication: - Revised: -
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Date of correction: May 22, 2009 Reason for correction: - Correction: ABSTRACT Details: Wrong : The Ti(C, N) layer (C/N ?? 4/6) was deposited by PVD process at 573-853K on the TiC_0.7N_0.3-Mo₂C-Ni substrates having transverse-rupture strength as high as 2.5-2.8 GPa. The interface structure between layer and substrate, transverse-rupture strength, residual stresses in the layer, cutting performance, etc. were studied for the PVD coated specimens.
The η phase did not appear near the interface even after annealing the coated specimens. The strength of coated specimens was the same as that of substrate when the PVD temperatures became lower. The strength of specimens sharply decreased by annealing with increasing the annealing temperature. These results on the strength were almost similar to those in case of coated WC-Co alloys previously reported. The strength of coated alloys, i.e. coated cermets and cemented carbides, was well explained, considering the facts that residual compressive stresses were produced in the layer and they varied according to the PVD and annealing temperatures. It was proved that cutting performance of coated specimens was superior to that of uncoated specimens.
Right : The Ti(C, N) layer (C/N ≈ 4/6) was deposited by PVD process at 573-853K on the TiC_0.7N_0.3-Mo₂C-Ni substrates having transverse-rupture strength as high as 2.5-2.8 GPa. The interface structure between layer and substrate, transverse-rupture strength, residual stresses in the layer, cutting performance, etc. were studied for the PVD coated specimens.
The η phase did not appear near the interface even after annealing the coated specimens. The strength of coated specimens was the same as that of substrate when the PVD temperatures became lower. The strength of specimens sharply decreased by annealing with increasing the annealing temperature. These results on the strength were almost similar to those in case of coated WC-Co alloys previously reported. The strength of coated alloys, i.e. coated cermets and cemented carbides, was well explained, considering the facts that residual compressive stresses were produced in the layer and they varied according to the PVD and annealing temperatures. It was proved that cutting performance of coated specimens was superior to that of uncoated specimens.

Date of correction: May 22, 2009 Reason for correction: - Correction: PDF FILE Details: -

Abstract

The Ti(C, N) layer (C/N ≈ 4/6) was deposited by PVD process at 573-853K on the TiC_0.7N_0.3-Mo₂C-Ni substrates having transverse-rupture strength as high as 2.5-2.8 GPa. The interface structure between layer and substrate, transverse-rupture strength, residual stresses in the layer, cutting performance, etc. were studied for the PVD coated specimens.
The η phase did not appear near the interface even after annealing the coated specimens. The strength of coated specimens was the same as that of substrate when the PVD temperatures became lower. The strength of specimens sharply decreased by annealing with increasing the annealing temperature. These results on the strength were almost similar to those in case of coated WC-Co alloys previously reported. The strength of coated alloys, i.e. coated cermets and cemented carbides, was well explained, considering the facts that residual compressive stresses were produced in the layer and they varied according to the PVD and annealing temperatures. It was proved that cutting performance of coated specimens was superior to that of uncoated specimens.

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