Refrigerant compressor using refrigerant HFC134a or HFC152a

摘要

A hermetic type refrigerant compressor operates using a refrigerant and a refrigerator oil in which the refrigerant is soluble. The refrigerant compressor includes slidable members adapted to slidably move and a compressing mechanism for compressing the refrigerant with the aid of the slidable members in a hermetic casing. The refrigerant, the refrigerator oil and the slidable members are selected and constructed in the following manner. The refrigerant is a 1,1,1,2-tetrafluoroethane or a 1,1-difluoroethane, the refrigerator oil is at least one kind of refrigerator oil selected from a polyalkylene glycol based oil and a polyester based oil, and at least one of the slidable members has a slidable surface which is prepared such that a surface hardened layer (12) having a Vickers hardness of 400 or more and a thickness of 2 microns or more is formed on a substrate (11) of ferrous metallic material, and subsequently, an iron oxide layer (13) composed of Fe₃O₄ as a main component and having a thickness of 0.01 micron or more is formed on the surface hardened layer. Each slidable member has surfaces each of which exhibits especially improved abrasion resistance.