DIAMOND-COATED TOOLS AND PROCESS FOR MAKING

A diamond-coated tool or wear part and a process for making them. The process includes a sintering step. In that step, a substrate is sintered in an atmosphere and for a time and at a temperature so that superficial, exaggerated grain growth is promoted that imparts a surface roughness which may ser...

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Bibliographische Detailangaben
Hauptverfasser: MELAGO, WILLIAM, M, OLES, EDWARD, J, INSPEKTOR, AHARON, BAUER, CHARLES, ERIK, GRAB, GEORGE, P, MURRAY, GERALD, D
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A diamond-coated tool or wear part and a process for making them. The process includes a sintering step. In that step, a substrate is sintered in an atmosphere and for a time and at a temperature so that superficial, exaggerated grain growth is promoted that imparts a surface roughness which may serve as anchoring sites during a subsequent diamond coating step which is performed by a vapor deposition technique. The diamond-coated tool or wear part includes a large grain substrate surface, and a high bond strength between the diamond coating and the substrate surface.