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RESEARCH PRODUCT
Cutting performance and indentation behaviour of diamond films on Co-cemented tungsten carbide
V. F. RuisiPierangelo D'antonioS. Lo CastoRiccardo PoliniEnrico Traversasubject
Materials scienceSynthetic diamondSettore ING-IND/22 - Scienza e Tecnologia dei MaterialiDiamond filmsSurface finishChemical vapor depositionengineering.materiallaw.inventionchemistry.chemical_compoundlawTungsten carbideIndentationMaterials ChemistryCutting performanceTungsten carbideSettore CHIM/03 - Chimica Generale e InorganicaMetal matrix compositeMetallurgyDiamondCutting performance; Tungsten carbide; Diamond films; CVD; Indentation behaviourSurfaces and InterfacesGeneral ChemistryCondensed Matter PhysicsCVDSurfaces Coatings and Filmsbody regionschemistryCemented carbideengineeringIndentation behaviourdescription
Abstract Diamond films were grown by Hot Filament Chemical Vapour Deposition (HFCVD) on differently pretreated ISO-grade K10 cemented carbide (WC-5.8 wt.%Co) cutting inserts. Etching with diluted HNO3 and surface roughening by Murakami's reagent were used as substrate pretreatments. The adhesion of the films was evaluated by indentation tests. In order to obtain a reliable estimation of the adhesion by the slope of the crack radius–indentation load curves, a careful SEM measurement of the crack lengths was performed. Bare and diamond-coated cutting inserts were used for turning tests of Al2O3-reinforced aluminum alloy. The adhesion levels obtained from the indentation curves correlated well the lifetime of diamond-coated cutting inserts used in turning tests performed on metal matrix composite material under severe cutting conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 |