| 摘要 |
PROBLEM TO BE SOLVED: To improve lubricating properties of a coating and reduce generation of heat itself due to cutting by coating nitride, carbon nitride, nitrogen oxide, or carbon nitrogen oxide shown by (TixV1-x) as an outer layer on compound coating of Ti and Al, and setting (x) to be under a specific value. SOLUTION: In a coated hard alloy coated with nitride, carbon nitride, nitrogen boride, or carbon nitrogen boride of which main component is Ti and Al, nitride, carbon nitride, nitrogen oxide, or carbon nitrogen oxide shown as (TixV1-x) is coated on compound coating of Ti and Al as an outer layer, and (x) is set to be under 0.9. Because when the rate of V is under 10 atom % the effect of lubricating properties of V-oxide is not sufficiently recognized in cutting, the numerical value of (x) is set to be under 0.9. Because when the content of a third component exceeds 30 atom %, wear resistance of the compound layer of Ti and Al deteriorates, further because when it is under 1 atom %, improving effect of oxidation resistance is small, it is set to be more than 1 atom % and less than 30 atm %.
|
