Casting platinum jewellery alloys: the effects of casting variables on fill and porosity

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dc.contributor.authorMiller, Duncan
dc.contributor.authorKeraan, Tauriq
dc.contributor.authorPark-Ross, Penny
dc.contributor.authorHusemeyer, Victoria
dc.contributor.authorBrey, Ali
dc.contributor.authorKhan, Irshad
dc.contributor.authorLang, Candy
dc.date.accessioned2017-12-01T08:48:38Z
dc.date.available2017-12-01T08:48:38Z
dc.date.issued2005
dc.date.updated2017-11-12T08:51:53Z
dc.description.abstractComparisons are made between platinum-copper and platinum-ruthenium alloys used for jewellery to evaluate the effects of casting variables. The effects of flask temperatures, investments, and centrifugal speeds on microstructure, percentage fill, and porosity were examined over a range of temperatures. Optimum conditions and materials for successful casting of high quality platinum jewellery alloys, using a Hot Platinum induction melting and casting machine, are described. Suitable choice of investment materials and rotational speeds produced good grid fills with Pt-5%Cu and Pt-5%Ru alloys. Metal porosity was more difficult to control, due to the inherently chaotic nature of the casting process, but casting into a relatively cool mould minimised the probability of bad porosity for both alloys. Pt-5%Ru was found to be successful as a casting alloy when used with induction melting technology. It displayed superior uniformity, hardness and colour, compared with cast Pt-5%Cu alloy.
dc.identifierhttp://dx.doi.org/10.1595/147106705X70273
dc.identifier.apacitationMiller, D., Keraan, T., Park-Ross, P., Husemeyer, V., Brey, A., Khan, I., & Lang, C. (2005). Casting platinum jewellery alloys: the effects of casting variables on fill and porosity. <i>Platinum Metals Review</i>, http://hdl.handle.net/11427/26434en_ZA
dc.identifier.chicagocitationMiller, Duncan, Tauriq Keraan, Penny Park-Ross, Victoria Husemeyer, Ali Brey, Irshad Khan, and Candy Lang "Casting platinum jewellery alloys: the effects of casting variables on fill and porosity." <i>Platinum Metals Review</i> (2005) http://hdl.handle.net/11427/26434en_ZA
dc.identifier.citationMiller, D., Keraan, T., Park-Ross, P., Husemeyer, V., Brey, A., Khan, I., & Lang, C. (2005). Casting platinum jewellery alloys. Platinum Metals Review, 49(4), 174-182.
dc.identifier.ris TY - AU - Miller, Duncan AU - Keraan, Tauriq AU - Park-Ross, Penny AU - Husemeyer, Victoria AU - Brey, Ali AU - Khan, Irshad AU - Lang, Candy AB - Comparisons are made between platinum-copper and platinum-ruthenium alloys used for jewellery to evaluate the effects of casting variables. The effects of flask temperatures, investments, and centrifugal speeds on microstructure, percentage fill, and porosity were examined over a range of temperatures. Optimum conditions and materials for successful casting of high quality platinum jewellery alloys, using a Hot Platinum induction melting and casting machine, are described. Suitable choice of investment materials and rotational speeds produced good grid fills with Pt-5%Cu and Pt-5%Ru alloys. Metal porosity was more difficult to control, due to the inherently chaotic nature of the casting process, but casting into a relatively cool mould minimised the probability of bad porosity for both alloys. Pt-5%Ru was found to be successful as a casting alloy when used with induction melting technology. It displayed superior uniformity, hardness and colour, compared with cast Pt-5%Cu alloy. DA - 2005 DB - OpenUCT DP - University of Cape Town J1 - Platinum Metals Review LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - Casting platinum jewellery alloys: the effects of casting variables on fill and porosity TI - Casting platinum jewellery alloys: the effects of casting variables on fill and porosity UR - http://hdl.handle.net/11427/26434 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/26434
dc.identifier.vancouvercitationMiller D, Keraan T, Park-Ross P, Husemeyer V, Brey A, Khan I, et al. Casting platinum jewellery alloys: the effects of casting variables on fill and porosity. Platinum Metals Review. 2005; http://hdl.handle.net/11427/26434.en_ZA
dc.language.isoeng
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.sourcePlatinum Metals Review
dc.source.urihttp://www.technology.matthey.com/about/platinum-metals-review/
dc.titleCasting platinum jewellery alloys: the effects of casting variables on fill and porosity
dc.typeJournal Article
uct.type.filetypeText
uct.type.filetypeImage
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