Sliding member and bearing

A bearing comprising:

• a metallic substrate;
• and
• a sliding layer made of a resin composition on the metallic substrate,
• wherein the resin composition consists of, relative to 100 vol % of the resin composition:
• 1 vol % to 10 vol % of ferric oxide;
• 2.5 vol % to 15 vol % of barium sulfate;
• 1 vol % to 20 vol % of at least one optional constituent selected from the group consisting of aramid, polyimide, ultra-high-molecular-weight polyethylene, molybdenum disulfide, graphite, carbon fiber, and polyether ether ketone (PEEK) resin;
• and
• the balance being fluororesin, and
• wherein the total amount of constituents other than the fluororesin is 45 vol % or less.

A method for using a resin composition in a sliding member, wherein the resin composition consists of, relative to 100 vol % of the resin composition:

• 1 vol % to 10 vol % of ferric oxide;
• 2.5 vol % to 15 vol % of barium sulfate;
• 1 vol % to 20 vol % of at least one optional constituent selected from the group consisting of aramid, polyimide, ultra-high-molecular-weight polyethylene, molybdenum disulfide, graphite, carbon fiber, and polyether ether ketone (PEEK) resin;
• and
• the balance being fluororesin, and
• wherein the total amount of constituents other than the fluororesin is 45 vol % or less.

A method for producing a sliding member, comprising:

• impregnating a porous layer formed on a surface of a metallic substrate with a resin composition and sintering the resin composition,
• wherein the resin composition consists of, relative to 100 vol % of the resin composition:
• 1 vol % to 10 vol % of ferric oxide;
• 2.5 vol % to 15 vol % of barium sulfate;
• 1 vol % to 20 vol % of at least one optional constituent selected from the group consisting of aramid, polyimide, ultra-high-molecular-weight polyethylene, molybdenum disulfide, graphite, carbon fiber, and polyether ether ketone (PEEK) resin;
• and
• the balance being fluororesin, and
• wherein the total amount of constituents other than the fluororesin is 45 vol % or less.

A method for preventing a sliding member made of a resin composition from being seized by friction, the method comprising:

• forming the sliding member with a resin composition containing:
• 1 vol % to 10 vol % of ferric oxide;
• 2.5 vol % to 15 vol % of barium sulfate;
• and
• 55 vol % or more of fluororesin.