| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cemented carbide tool with excellent abrasion resistance and impact resistance.SOLUTION: A cemented carbide tool 1 includes a base material 10 formed of hard metal, and a protective film 20 formed on the base material 10 and having a thickness of 1.0μm or more. The protective film 20 includes ten layers or more of metal oxide films 20, 20, ..., 20having a thickness of 500 nm or less. Each of the metal oxide films 20, 20, ..., 20is different from the adjacent other metal oxide films.</p> |
