Abstract: An aluminum member includes: a base material made of aluminum or an aluminum alloy; and an anodized coating including a barrier layer on a surface of the base material and a porous layer on the barrier layer, wherein the anodized coating contains phosphorus (P) and sulfur (S), and has a thickness of 100 ?m or less, and, in a depth direction heading from a surface of the anodized coating toward the base material, a depth providing a maximum content of S in a region situated at a depth of 500 nm or more from the surface of the anodized coating is larger than a depth providing a maximum content of P, and an inequality (the maximum content of S)>(the maximum content of P) holds.

Abstract: An aluminum alloy material having a base material formed from an aluminum alloy, and a chemical treatment film on the surface of the base material. In a cathode polarization curve obtained by measuring the aluminum alloy material at a sweeping speed of 20 mV/min by using a saturated KCl silver-silver chloride electrode as a reference electrode in a 5 wt % NaCl static aqueous solution at a temperature of 25° C. and a pH of 5.5, the electrode potential at which the absoute value of the current density reaches 10 ?A/cm2 is ?1350 to ?1150 mV.

Abstract: An aluminum member includes: a base material made of aluminum or an aluminum alloy; and an anodized coating including a barrier layer on a surface of the base material and a porous layer on the barrier layer, wherein the anodized coating contains phosphorus (P) and sulfur (S), and has a thickness of 100 ?m or less, and, in a depth direction heading from a surface of the anodized coating toward the base material, a depth providing a maximum content of S in a region situated at a depth of 500 nm or more from the surface of the anodized coating is larger than a depth providing a maximum content of P, and an inequality (the maximum content of S)>(the maximum content of P) holds.