Compressor with chromium nitride and titanium nitride layers
A compressor of an embodiment includes a compression mechanism part that compresses a refrigerant in a sealed container. The compression mechanism part includes Cr and includes a first member and a second member which slidingly move relative to each other. The first member has a chromium layer and a nitride layer formed on a base member surface in this order. The nitride layer includes CrN and TiN. Carbide is deposited on a surface of the second member.
1. A compressor comprising a compression mechanism part that compresses a refrigerant in a sealed container, wherein
the compression mechanism part includes a first member and a second member which slidingly move relative to each other,
the first member has a chromium layer and a nitride layer formed on a base member surface in this order,
the nitride layer includes CrN and TiN,
carbide is deposited on a surface of the second member, and
a region having CrN greater than TiN and a region having TiN greater than CrN are alternately present in a thickness direction of the nitride layer.
2. The compressor according to claim 1 , wherein
the refrigerant is an unsaturated refrigerant or a mixed refrigerant including an unsaturated refrigerant.
3. The compressor according to claim 1 , wherein
the refrigerant is carbon dioxide or a mixed refrigerant including carbon dioxide.
4. The compressor according to claim 1 , wherein
the compressor is a rotary compressor in which the first member is a blade and the second member is a roller.