| 摘要 |
PROBLEM TO BE SOLVED: To provide an underwater bearing device excellent in wear resistance to soil and sand mixing and clearance corrosive resistance to sea water, and a sea water pump using the underwater bearing device. SOLUTION: In this slide member, as a first coating, an alloy including Cr, Mo, at least one kind of Si or B, and Ni-Cr-Mo alloy consisting of Ni and unavoidable impurities in the rest are coated on the base material. In addition, as a second coating, an alloy including Cr, Mo, at least one kind of Si or B, and Ni-Cr-Mo alloy consisting of Ni and unavoidable impurities in the rest as a bonding material and a material that has at least one kind of Wc, Cr3C2 as main component, are coated. |
