| US 7,597,970 B2 | ||
| Surface coated member and cutting tool | ||
| Tsuyoshi Fukano, Satsumasendai (Japan); and Takahiko Makino, Satsumasendai (Japan) | ||
| Assigned to Kyocera Corporation, Kyoto (Japan) | ||
| Filed on Mar. 22, 2006, as Appl. No. 11/387,438. | ||
| Claims priority of application No. 2005-082051 (JP), filed on Mar. 22, 2005; application No. 2005-082052 (JP), filed on Mar. 22, 2005; and application No. 2005-095410 (JP), filed on Mar. 29, 2005. | ||
| Prior Publication US 2006/0222885 A1, Oct. 05, 2006 | ||
| Int. Cl. B32B 9/00 (2006.01) | ||
| U.S. Cl. 428—698 [428/336; 428/701; 428/702] | 11 Claims |
| 1. A surface coated member comprising a substrate composed of a hard material; and a hard coating layer containing at least a TiCN layer on a surface of the substrate, wherein the TiCN layer has a ratio r representing a ratio of a peak strength I(422) of a (422)-crystal plane to a peak strength I(111) of a (111)-crystal plane, namely (I(422)/I(111)), in an X-ray diffraction analysis of the TiCN layer, and wherein the ratio r is progressively increased from the inner surface side of the TiCN layer to the outer surface side of the TiCN layer. |