Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized
Patent
1995-09-22
1997-08-05
Beck, Shrive
Coating processes
Coating by vapor, gas, or smoke
Mixture of vapors or gases utilized
4272557, C23C 1640
Patent
active
056540353
ABSTRACT:
A method of coating a body coated with refractory single- or multi-layers, wherein specific layers are characterized by a controlled microstructure and phase composition with crystal planes preferably grown in a preferential direction with respect to the surface of the coated body. The coating comprises one or several refractory layers of which at least one layer is a dense, fine-grained layer of .alpha.-Al.sub.2 O.sub.3 preferably textured in the (012) direction. The coated tool according to the present invention exhibits excellent surface finish and shows much improved wear and toughness properties compared to prior art objects when used for machining steel, cast iron and, particularly, when machining nodular cast iron.
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Lenander Anders
Ljungberg Bjorn
Beck Shrive
Meeks Timothy
Sandvik AB
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