公开(公告)号：US20180143592A1

公开(公告)日：2018-05-24

申请号：US15724540

申请日：2017-10-04

申请人： Seiko Epson Corporation

发明人： Tomohiko SOGO ,  Atsushi KAWAKAMI ,  Yuzuru TSUKAMOTO ,  Hirokazu TAKAHASHI

IPC分类号： G04B37/22

CPC分类号： G04B37/22 ,  C23C14/165 ,  C23C28/321 ,  C23C28/36 ,  C23C28/44 ,  C23C30/00 ,  G04B37/1486

摘要： A timepiece part has a substrate; and a first coating made from a material containing Co and including greater than or equal to 26 wt % and less than or equal to 30 wt % Cr, and greater than or equal to 5 wt % and less than or equal to 7 wt % Mo. The substrate is preferably made from a material including at least one of stainless steel and Ti. A second coating made of a material including at least one of TiC and TiCN is preferably disposed between the substrate and first coating.

公开(公告)号：US20180275609A1

公开(公告)日：2018-09-27

申请号：US15923295

申请日：2018-03-16

申请人： Seiko Epson Corporation

发明人： Tomohiko SOGO ,  Hirokazu TAKAHASHI ,  Yuzuru TSUKAMOTO ,  Atsushi KAWAKAMI

IPC分类号： G04B37/22 ,  A44C5/02 ,  A44C27/00

CPC分类号： G04B37/22 ,  A44C5/02 ,  A44C27/003 ,  A44C27/006 ,  C23C14/0015 ,  C23C14/0036 ,  C23C14/027 ,  C23C14/028 ,  C23C14/165 ,  C23C14/5846 ,  C23C28/321 ,  C23C28/34 ,  C23C28/341 ,  C23C28/36 ,  G04B19/12 ,  G04B45/00 ,  G04G17/08

摘要： A timepiece part includes: a substrate; and a first coating configured from a material containing cobalt as a primary component, and 26 mass % to 30 mass % of Cr, and 5 mass % to 7 mass % of Mo. The first coating has an average signal intensity of oxygen of 0 counts/sec to 150 counts/sec as measured by SIMS relative to a 1.0 μm-thick reference film of a composition containing Co: 62.8 mass %, Cr: 28.2 mass %, Mo: 6.0 mass %, C: 1.5 mass %, and Ar: 1.5 mass %.

公开(公告)号：US20180267476A1

公开(公告)日：2018-09-20

申请号：US15918367

申请日：2018-03-12

申请人： Seiko Epson Corporation

发明人： Tomohiko SOGO ,  Yuzuru TSUKAMOTO ,  Atsushi KAWAKAMI ,  Hirokazu TAKAHASHI

IPC分类号： G04B37/22 ,  A44C5/00 ,  A44C27/00

CPC分类号： G04B37/22 ,  A44C5/0061 ,  A44C27/003 ,  C23C14/0015 ,  C23C14/0036 ,  C23C14/021 ,  C23C14/027 ,  C23C14/028 ,  C23C14/0635 ,  C23C14/165 ,  C23C28/321 ,  C23C28/341 ,  C23C28/347 ,  C23C28/36 ,  G04B45/00 ,  G04B45/0076 ,  G04G17/08

摘要： A timepiece part according to the invention includes: a substrate; and a first coating configured from a material containing cobalt as a primary component, and 26 mass % to 30 mass % of Cr, and 5 mass % to 7 mass % of Mo. The first coating has a surface with a percentage surface area increase of 0% to 1.2% as measured by atomic force microscopy against a reference flat surface.