HARD COATING HAVING EXCELLENT ABRASION RESISTANCE AND TOUGHNESS

WIPO Patent Application WO/2019/045235

A1

The purpose of the present invention is to provide a hard coating having improved abrasion resistance and toughness, formed by a PVD method, and comprising a first hard layer and a second layer, wherein: the first hard layer has a thickness of 0.1-3.0 μm, is made of Til-aAlaN (0.3≤a≤0.7) and has a single phase structure; the second hard layer has a thickness of 0.5-10 μm and is made of Til-a-bAlaMebN (0.3≤a≤0.7, 0≤b≤0.05; Me is one or more selected from V, Zr, Si, Nb, Cr, Mo, Hf, Ta and W); the ratio ([200]/[111]) of the intensity of [200] peak to the intensity of [111] peak is 1.5 or more in XRD phase analysis and preferred growth occurs in the direction [200]; the [200] peak is located at 42.7-44.6°and is simultaneously composed of three phases; the [111] peak is located at 37.0-38.5° and is simultaneously composed of three phases; and, when a peak having the highest intensity among peaks relating to the three phases is a main peak and the remaining peaks are side peaks, the ratio (main peak/side peaks) of the intensity of the main peak to the intensity of the side peaks, of the [200] plane, is 2 or more and the ratio (main peak/side peaks) of the intensity of the main peak to the intensity of the side peaks, of the [111] plane, is 2 or more.

PAKR JE-HUN (KR)
AHN SEUNG-SU (KR)
PARK SEONG-MO (KR)
GWON JIN-HAN (KR)
KIM KYOUNG-IL (KR)
KIM BEOM-SIK (KR)
AHN SUN-YONG (KR)

PCT/KR2018/006778

March 07, 2019

June 15, 2018

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KORLOY INC (KR)

C23C14/06

WO2006041367A1

2006-04-20

KR101208838B1	2012-12-05
JPH08209335A	1996-08-13
KR101753104B1	2017-07-05
JP2010001547A	2010-01-07

IAM PATENT FIRM (KR)

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