DLC and DLC-WS2 coatings for machining of aluminium alloys

Show simple item record

dc.contributor.author Brzezinka, Tomasz L.
dc.contributor.author Rao, Jeff
dc.contributor.author Paiva, Jose M.
dc.contributor.author Kohlscheen, Joern
dc.contributor.author Fox-Rabinovich, German S.
dc.contributor.author Veldhuis, Stephen C.
dc.contributor.author Endrino, José L.
dc.date.accessioned 2019-09-02T09:36:51Z
dc.date.available 2019-09-02T09:36:51Z
dc.date.issued 2019-03-15
dc.identifier.citation Brzezinka TL, Rao J, Paiva JM, et al., (2019) DLC and DLC-WS2 coatings for machining of aluminium alloys. Coatings, Volume 9, March 2019, Article number 192 en_UK
dc.identifier.issn 2079-6412
dc.identifier.uri https://doi.org/10.3390/coatings9030192
dc.identifier.uri https://dspace.lib.cranfield.ac.uk/handle/1826/14496
dc.description.abstract Machine-tool life is one limiting factor affecting productivity. The requirement for wear-resistant materials for cutting tools to increase their longevity is therefore critical. Titanium diboride (TiB2) coated cutting tools have been successfully employed for machining of AlSi alloys widely used in the automotive industry. This paper presents a methodological approach to improving the self-lubricating properties within the cutting zone of a tungsten carbide milling insert precoated with TiB2, thereby increasing the operational life of the tool. A unique hybrid Physical Vapor Deposition (PVD) system was used in this study, allowing diamond-like carbon (DLC) to be deposited by filtered cathodic vacuum arc (FCVA) while PVD magnetron sputtering was employed to deposit WS2. A series of ~100-nm monolayer DLC coatings were prepared at a negative bias voltage ranging between −50 and −200 V, along with multilayered DLC-WS2 coatings (total thickness ~500 nm) with varying number of layers (two to 24 in total). The wear rate of the coated milling inserts was investigated by measuring the flank wear during face milling of an Al-10Si. It was ascertained that employing monolayer DLC coating reduced the coated tool wear rate by ~85% compared to a TiB2 benchmark. Combining DLC with WS2 as a multilayered coating further improved tool life. The best tribological properties were found for a two-layer DLC-WS2 coating which decreased wear rate by ~75% compared to TiB2, with a measured coefficient of friction of 0.05. en_UK
dc.language.iso en en_UK
dc.publisher MDPI en_UK
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.subject self-lubricating coatings en_UK
dc.subject tungsten disulphide en_UK
dc.subject DLC en_UK
dc.subject SEM en_UK
dc.subject EDS en_UK
dc.subject XPS en_UK
dc.subject milling en_UK
dc.subject aluminium en_UK
dc.title DLC and DLC-WS2 coatings for machining of aluminium alloys en_UK
dc.type Article en_UK
dc.identifier.cris 23256589

Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International

Search CERES


My Account