Moving part, compressor, and manufacturing method thereof

A compressor comprising:

• a compressing portion configured to compress a fluid and including a moving part which causes repetitive friction with at least one other component;
• a driving motor configured to drive the compressing portion;
• and
• a housing accommodating the compressing portion and the driving motor,
• wherein the moving part comprises:
• a base material having a polished surface and including a steel material;
• an adhesive layer arranged on the polished surface;
• and
• a coating layer including diamond-like carbon;
• wherein,
• the adhesive layer is arranged between the base material and the coating layer and bonds the coating layer to the base material,
• the base material includes an etching-processed area having a plurality of microgrooves (MG) extending in a downward direction into the base material from the polished surface, and
• the plurality of microgrooves extend under the adhesive layer, and penetrating into the etching-processed area.

A method of manufacturing a moving part, the method comprising:

• forming a polished surface by polishing a surface of a base material including a steel material;
• forming an etching-processed area including a plurality of microgrooves extending in a downward direction into the base material from the polished surface by performing an etching process on the polished surface;
• forming an adhesive layer on the etching-processed area so that the plurality of microgrooves extend under the adhesive layer, penetrating down into the etching-processed area;
• and
• forming a coating layer including diamond-like carbon on the adhesive layer.