| 摘要 |
<p>A tool comprises a coating formed of >= 2 coating layers having a composition of titanium-aluminum-tantalum nitride and titanium-aluminum-tantalum-(silicon, vanadium or boron) nitride. A tool comprises a base material consisting cemented carbide, cermet, hard material or tool steel; a coating formed of >= 2 coating layers and having a total coating thickness of 0.5-15 mu m, the coating layer having a thickness of 0.0003-5.0 mu m, the coating layer(s) having a composition (Ti aAl bTa c)N and (Ti dAl cTa fM g)N. a+b+c, d+e+f+g = 1; b = 0.3-0.75; c = 0.001-0.30, preferably 0.01-0.25; e = greater than 0.50, less than 0.70; f = 0-0.25, preferably 0.002-0.10;and M = Si, V, and/or B, where g for Si, V, and B is 0.0005-0.10, preferably 0.001-0.03; 0.001-0.25, preferably 0.10-0.20; and 0.00005-0.01, preferably 0.0001-0.005, respectively. Two Independent claims are also included for a sputtering target for coating the tool in a physical vapor deposition (PVD) process consisting of 30-75 at.% aluminium, 0.1-30 at.% tantalum and balance titanium.</p> |
