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6CCVD Research

Comparing the environmental and economic performances of different substrate pre-treatment processes for diamond coating deposition

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-01-01
JournalProcedia CIRP
AuthorsMarco Marconi, Giorgia Pietroni, Gianluca Rubino
InstitutionsUniversitĆ  degli Studi della Tuscia
Citations4

Abstract

Section titled ā€œAbstractā€

The deposition of diamond coatings on hard metals substrates is a common strategy to improve mechanical characteristics of parts (e.g. cutting tools), but requires the pre-treatment of substrates. The study aims to investigate the environmental and economic sustainability of two different substrate pre-treatment processes: (i) two-step chemical etching process, and (ii) high-power continuous wave diode laser method. The cradle to gate study considers the superficial treatment of a WC-Co specimen as functional unit. The Life Cycle Assessment results highlight that for most of the ReCiPe impact categories, the environmental impact of laser treatment is greater than that of the chemical process (+38% in case of Climate Change, +45% in case of ReCiPe endpoint Single score), mainly due to the high energy consumption of the laser. The cost estimation, instead, highlights relevant savings for the laser process (about -98%), due to higher cost of chemicals than for electricity.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2021 - Diamond growth by chemical vapour deposition
  2. 2008 - A streamlined life cycle assessment on the fabrication of WCeCo cermets [Crossref]
  3. 2019 - Life Cycle Inventory of technologies for stone quarrying, cutting and finishing: Contribution to fill data gaps [Crossref]
  4. 1993 - Effect of the chemical nature of transition-metal substrates on chemical-vapor deposition diamond [Crossref]
  5. 1996 - Diamond nucleation and growth on different cutting tool materials: influence of substrate pre-treatments [Crossref]
  6. 1995 - Friction measurements on hot filament CVD diamond films deposited on etched tungsten carbide surfaces [Crossref]
  7. 1996 - Pretreatment of substrate surface for improved adhesion of diamond films on hard metal cutting tools [Crossref]
  8. 2012 - Recent Advances in the Deposition of Diamond Coatings on Co-Cemented Tungsten Carbides [Crossref]

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