| Texto completo | |
| Autor(es): |
Alves, Ueliton C.
;
Ricci, Virgilio P.
;
Mota, Igor G. C.
;
Koga, Guilherme Y.
;
Hassui, Amauri
;
Ventura, Carlos E. H.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MANUFACTURING PROCESSES; v. 145, p. 14-pg., 2025-04-29. |
| Resumo | |
TiSiN-based coatings have been increasingly used due to their good mechanical properties, and investigations comparing their performance with other coating systems are mostly limited to their tribological characteristics. Within this context, this study compares the mechanical, tribological, and machining properties of TiSiN/AlTiN with those obtained for TiAlN/TiN (commonly applied in cutting tools), both deposited by physical vapor deposition on cemented tungsten carbide cutting inserts. TiSiN/AlTiN exhibited higher mechanical properties, with hardness H = 34.1 GPa and elastic modulus E = 315 GPa, compared to TiAlN/TiN (H = 27.9 GPa and E = 286 GPa). While both coatings had similar roughness values (Sz similar to 14 mu m), TiSiN/AlTiN showed fewer surface defects. Under higher normal loads (980 N and 1471 N), TiSiN/AlTiN experienced severe delamination with adhesion grades HF5-HF6, whereas TiAlN/TiN exhibited grades HF3-HF4. Pin-on-plate tests corroborated these findings, with TiSiN/AlTiN showing coating removal at higher normal loads (15 N and 25 N), while TiAlN/TiN exhibited minor failures. Turning experiments in AISI 1045 steel revealed flank and crater wear for both coatings, primarily due to adhesion, abrasion, and diffusion, with predominant abrasion and diffusion. Despite TiSiN/AlTiN's superior mechanical properties, its lower adhesion to the substrate led to higher wear rates and shorter tool life than TiAlN/TiN. (AU) | |
| Processo FAPESP: | 18/24614-1 - Plano de Aplicação Ano 2018 da Parcela da Reserva Técnica (Base 2017) para Custos de InfraEstrutura Institucional Centro de Ciências Exatas e de Tecnologia (CCET) UFSCAR |
| Beneficiário: | Luiz Fernando de Oriani e Paulillo |
| Modalidade de apoio: | Auxílio à Pesquisa - Reserva Técnica para Infraestrutura Institucional de Pesquisa |
| Processo FAPESP: | 17/12309-7 - EMU concedido no processo 15/15622-2: microscópio para análise de imagens tridimensionais |
| Beneficiário: | Carlos Eiji Hirata Ventura |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |