| 摘要 |
<p>The present invention relates to a cutting tool, and a method of making thereof, having improved resistance to corrosion caused by cooling liquid, comprising the steps of providing a hard body, such as a cemented carbide or ceramic body performing a first coating deposition process, to obtain a first coating, comprising depositing, by Chemical Vapour Deposition (CVD) techniques known in the art, one or more layers of refractory material (s), lowering the temperature of the cutting tool to at least a temperature where cooling cracks form in the coating, and additionally performing a crack sealing step using, e.g., CVD, Plasma Activated CVD or Atomic Layer Deposition, whereby substantial parts of the cooling cracks are filled with a crack filling material, being the same as or different from the material (s) in the first coating, using a deposition technique having sufficiently high step coverage.</p> |
