Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized
Patent
1997-07-22
1998-11-10
King, Roy V.
Coating processes
Coating by vapor, gas, or smoke
Mixture of vapors or gases utilized
4272552, 4272551, C23C 1640
Patent
active
058340610
ABSTRACT:
A body is disclosed with a coating comprising one or more refractory layers of which one layer is an outermost smooth, shiny 110-textured .alpha.-Al.sub.2 O.sub.3 layer. Said A1.sub.2 0.sub.3 layer has a surface appearance almost like a polished A1.sub.2 0.sub.3 layer. Coated tools show improved tool lives compared to prior art tools when used for machining steel or cast iron material preferably for near net shape machining.
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King Roy V.
Sandvik AB
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