Watch Component And Electronic Watch

Abstract

A watch component includes a first region including a first soft magnetic layer composed of a ferrite phase, a first non-magnetic layer composed of an austenized phase in which the ferrite phase is austenized, and a first mixed layer in which the ferrite phase and the austenized phase are mixed, the first mixed layer being formed between the first soft magnetic layer and the first non-magnetic layer, and a second region including a second non-magnetic layer composed of the austenized phase, the second non-magnetic layer having a thickness greater than that of the first non-magnetic layer.

What is claimed is: 
     
         1 . A watch component comprising:
 a first region including
 a first soft magnetic layer composed of a ferrite phase, 
 a first non-magnetic layer composed of an austenized phase in which the ferrite phase is austenized, and 
 a first mixed layer in which the ferrite phase and the austenized phase are mixed, the first mixed layer being formed between the first soft magnetic layer and the first non-magnetic layer; and 
   a second region including a second non-magnetic layer composed of the austenized phase, the second non-magnetic layer having a thickness greater than that of the first non-magnetic layer.   
     
     
         2 . The watch component according to  claim 1 , wherein the second region includes
 a second soft magnetic layer composed of the ferrite phase; and   a second mixed layer in which the ferrite phase and the austenized phase are mixed, the second mixed layer being formed between the second soft magnetic layer and the second non-magnetic layer.   
     
     
         3 . The watch component according to  claim 2 , wherein a thickness of a combination of the second soft magnetic layer and the second mixed layer is  100 pm or smaller.  4  . The watch component according to  claim 1 , wherein a thickness of the first soft magnetic layer is  100 pm or greater. 
     
     
         5 . The watch component according to  claim 1 , wherein
 the first region includes a first surface and a second surface located opposite the first surface;   the first non-magnetic layer and the first mixed layer are provided on a first surface side and a second surface side with respect to the first soft magnetic layer; and   a thickness of the first non-magnetic layer formed on the first surface side is greater than a thickness of the first non-magnetic layer formed on the second surface side.   
     
     
         6 . The watch component according to  claim 1 , wherein a thickness of the first region and a thickness of the second region are equal to each other.  7  . The watch component according to  claim 1 , wherein a thickness of the first region and a thickness of the second region are different from each other. 
     
     
         8 . The watch component according to  claim 1 , wherein the watch component is at least one of a case body, a case back, a dial, a bezel, a dial ring, and a main plate of a movement. 
     
     
         9 . An electronic watch comprising the watch component according to  claim 1 . 
     
     
         10 . The electronic watch according to  claim 9 , comprising an antenna including an antenna core and a coil wound on the antenna core, wherein
 in a side view as viewed from an axial direction of the antenna, the second region is disposed at a position overlapping the antenna.   
     
     
         11 . The electronic watch according to  claim 10 , wherein in the side view, an area of the second region is larger than a cross-sectional area of the antenna core. 
     
     
         12 . The electronic watch according to  claim 9 , comprising a magnetic sensor configured to detect geomagnetism, wherein
 the first region is not disposed at least in a predetermined range from a center of the magnetic sensor.   
     
     
         13 . The electronic watch according to  claim 12 , wherein the predetermined range is a range inside a circle centered on the center of the magnetic sensor in plan view, the circle having a radius of 15 mm.