| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-oil resistance reduction member which can reduce resistance in oil.SOLUTION: A groove at a libretto surface 2 of an in-oil resistance reduction member 10 has a triangular cross section shape, polymer fluorine oil impregnated into a hole of a porous material 1 is oozed out to a trough part of the groove, a layer 3 of the polymer fluorine oil is formed, and the layer 3 of the polymer fluorine oil contacts with oil 4 such as ATF. A fluorine film 6 is formed on a surface of a base material particulate 5 constituting the porous material 1, that is, a hole surface of the porous material 1, and polymer fluorine oil 3' is impregnated in a hole of the porous material 1 which is formed of the plurality of the adjacent base material particulates 5. |
