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- Title
Cutting Performance and Wear Mechanism of Multilayer Diamond‐Coated Tools.
- Authors
Yan, Guangyu; Sun, Yubin; Cristea, Daniel; Wu, Yuhou; Liu, Lusheng; Wang, He; Zhao, Jinbao
- Abstract
Monolayer and multilayer diamond films are deposited on WC‐Co cemented carbide by hot‐filament chemical vapor deposition. The growth characteristics of diamond coatings are analyzed. Cutting performance characteristics such as tool life and the stability of machining process in the machining of presintered ZrO2 are compared based on the variation of cutting speed and resultant cutting force, and workpiece surface roughness. For the monolayer diamond coatings, as the concentration of CH4 increases from 1% to 5%, the diamond crystal is transformed from micron columnar crystal to nanocluster crystal. The multilayer diamond coatings combine the advantages of micron‐ and nanocrystalline structures. The multilayer diamond‐coated tool exhibits longer service life and better machining quality. Because of the appearance of the brittle–plastic conversion mechanism, the surface integrity of ZrO2 processed by multilayer diamond‐coated tool is relatively high. As for the uncoated tool, the workpiece is mainly machined by brittle spalling. The interfacial stratified fracture system between the interlayers is proposed to be the toughening mechanism of the multilayer structure.
- Subjects
DIAMOND films; MULTILAYERED thin films; WATER jets; DIAMOND crystals; CHEMICAL vapor deposition; SURFACE roughness; CUTTING force; SERVICE life
- Publication
Advanced Engineering Materials, 2023, Vol 25, Issue 19, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202300368