公开(公告)号：US20230416903A1

公开(公告)日：2023-12-28

申请号：US18035779

申请日：2021-08-06

Applicant: TPR Co., Ltd.

Inventor： Syun Sugawara ,  Takatsugu Iwashita

IPC: C23C14/06 ,  F16J9/26 ,  C23C14/32

CPC classification number: C23C14/0641 ,  F16J9/26 ,  C23C14/32

Abstract: The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance such that peeling thereof starting at a crack is unlikely to occur even in a more severe lubrication environment. The problem is solved by a CrN coating film which has a preferred orientation of 200 as determined by XRD, and in which the X-ray diffraction intensity ratio of the (200) plane with respect to the (111) plane, (200)/(111), is 5.5 or higher, and the ratio of crystal grains of 1 μm or smaller is 85% or higher in a crystal grain size distribution measured by an EBSD analysis.

公开(公告)号：US12281380B2

公开(公告)日：2025-04-22

申请号：US18035779

申请日：2021-08-06

Applicant: TPR Co., Ltd.

Inventor： Syun Sugawara ,  Takatsugu Iwashita

IPC: C23C14/06 ,  C23C14/32 ,  F16J9/26

Abstract: The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance such that peeling thereof starting at a crack is unlikely to occur even in a more severe lubrication environment. The problem is solved by a CrN coating film which has a preferred orientation of 200 as determined by XRD, and in which the X-ray diffraction intensity ratio of the (200) plane with respect to the (111) plane, (200)/(111), is 5.5 or higher, and the ratio of crystal grains of 1 μm or smaller is 85% or higher in a crystal grain size distribution measured by an EBSD analysis.