Hard molybdenum alloy, wear resistant alloy and method for manufacturing the same
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsKouji Tanaka, Takashi Saito, Tadashi Oshima
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Abstract
Disclosed is a hard molybdenum alloy which exhibits an excellent wear resistance against sliding wear and adhesive wear in a high temperature nonlubricating atmosphere, comprising at least one of nickel (Ni) and cobalt (Co) in an amount of from 14.0 to 43.0% by weight, silicon (Si) in an amount of from 3.0 to 8.0% by weight and molybdenum (Mo) in an amount of not less than 20.0% by weight. Also disclosed is a wear resistant alloy which includes the above hard molybdenum alloy as a reinforcing phase.
Claims25
A hard molybdenum alloy, comprising:
- cobalt (Co) in an amount of from 14.0 to 43.0% by weight;
- silicon (Si) in an amount of from 3.0 to 8.0% by weight;
- and
- molybdenum (Mo) in an amount of not less than 20.0% by weight based on the total weight of the hard molybdenum alloy.
A wear resistant alloy comprising a metallic matrix and a hard molybdenum alloy incorporated in said metallic matrix, wherein said hard molybdenum alloy comprises cobalt (Co) in an amount of from 14.0 to 43.0% by weight, silicon (Si) in an amount of from 3.0 to 8.0% by weight and molybdenum (Mo) in an amount of not less than 20.0% by weight based on the total weight of the hard molybdenum alloy.
A wear resistant sintered alloy obtained by sintering a mixture of a metallic matrix powder and a hard molybdenum alloy powder, wherein said hard molybdenum alloy powder comprises cobalt (Co) in an amount of from 14.0 to 43.0% by weight, silicon (Si) in an amount of from 3.0 to 8.0% by weight and molybdenum (Mo) in an amount of not less than 20.0% by weight and said hard molybdenum alloy is incorporated in said metallic matrix as a reinforcing phase.
A method for manufacturing a wear resistant sintered alloy comprising:
- preparing a metallic matrix powder or a blended elemental powder constituting said metallic matrix;
- preparing a hard molybdenum alloy powder;
- preparing a mixture of said metallic matrix powder or said blended elemental powder and said hard molybdenum alloy powder;
- and
- sintering said mixture, wherein
- said hard molybdenum alloy powder comprises cobalt (Co) in an amount of from 14.0 to 43.0% by weight, silicon (Si) in an amount of from 3.0 to 8.0% by weight and molybdenum (Mo) in an amount of not less than 20.0% by weight based on the total weight of the hard molybdenum alloy, and
- said wear resistant sintered alloy comprises a metallic matrix and a hard molybdenum alloy incorporated in said metallic matrix as a reinforcing phase.
A hard molybdenum alloy, comprising:
- at least one of nickel (Ni) and cobalt (Co) in a total amount of from 14.0 to 43.0% by weight;
- silicon (Si) in an amount of from 3.0 to 8.0% by weight;
- molybdenum (Mo) in an amount of not less than 20.0% by weight based on the total weight of the hard molybdenum alloy;
- and
- at least one selected from the group consisting of tungsten (W), niobium (Nb), vanadium (V), hafnium (Hf) and tantalum (Ta) in a total amount of not more than 50.0% by weight of the remainder of the alloy excluding Ni, Co and Si.
A wear resistant-alloy comprising a metallic matrix and a hard molybdenum alloy incorporated in said metallic matrix, wherein said hard molybdenum alloy comprises at least one of nickel (Ni) and cobalt (Co) in an amount of from 14.0 to 43.0% by weight, silicon (Si) in an amount of from 3.0 to 8.0% by weight, molybdenum (Mo) in an amount of not less than 20.0% by weight based on the total weight of the hard molybdenum alloy, and the content of said hard molybdenum alloy is from 0.05 to 0.7 as calculated in terms of volume fraction.
Dependencies are inferred from the claim text.