Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/71355
DC FieldValueLanguage
dc.contributor.authorWang, D.Y.en_US
dc.contributor.authorChiu, M.C.en_US
dc.date2001zh_TW
dc.date.accessioned2014-06-11T06:01:16Z-
dc.date.available2014-06-11T06:01:16Z-
dc.identifier.issn0257-8972zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/71355-
dc.description.abstractIn this study, we deposited Cr2O3/CrN duplex coatings, consisting of a thin Cr2O3 oxide film on top of a CrN layer, with an unbalanced magnet ron (UBM) sputtering technique. Microstructure characterization was conducted with X-ray diffraction (XRD) and scanning electron microscopy (SEM). Tribological evaluations were also performed with a scratch tester and ball-on-disc tribometer. Experimental results showed a well-adherent Cr2O3/CrN duplex coating morphology. The Cr2O3 top-layer possesses an amorphous lattice structure. Gas flow rates and bias voltages had an impact upon mechanical and chemical properties of the Cr3O3/CrN coatings. To compensate the fluctuation of pumping efficiency, target poisoning and sputtering parameters, the flow rate of the reactive gas was rapidly and accurately regulated via a set of piezo valves and an optical emission monitor (OEM). OEM readings revealed the exact proportions of reactive gas consumed by metal plasma (US Patent 4 525 (1985) 417 Appl. Phys. Lett. 50 (1987) 1056; Surf. Coat. Technol. 49 (1991) 543). Gas flow rates were thus controlled, dynamically, with variations of processing conditions. At an OEM setting of 30-50% and a pulsed bias voltage of -55 V, the Cr2O3/CrN duplex coating demonstrated excellent micro-hardness (2533 Hv(25)g) and adhesion strength (L-c = 75 N). The highest contact angle between water and Cr2O3 was measured at 103 degrees at an OEM setting of 30%. An improved mold releasing capability is anticipated, especially compared with the traditional hard chrome plating. Finally, an outstanding wear Life of 4250 m was achieved on the Cr2O3/CrN duplex coating deposited at 50% of OEM setting. In summary, the enhanced properties of micro-hardness, film adhesion, mold releasing and wear life of the Cr2O3/CrN duplex coating demonstrated its potential for injection molding applications. (C) 2001 Elsevier Science B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationSurface & Coatings Technologyen_US
dc.relation.ispartofseriesSurface & Coatings Technology, Volume 137, Issue 2-3, Page(s) 164-169.en_US
dc.relation.urihttp://dx.doi.org/10.1016/s0257-8972(00)01109-9en_US
dc.subjectCr2O3en_US
dc.subjectCrNen_US
dc.subjectduplex coatingen_US
dc.subjectinjection moldingen_US
dc.subjectunbalanced magnetronen_US
dc.titleCharacterization of Cr2O3/CrN duplex coatings for injection molding applicationsen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/s0257-8972(00)01109-9zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
Appears in Collections:期刊論文
Show simple item record
 

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.