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https://www.technology.matthey.com/article/49/1/2-15/
A patent on hard Pt alloys for jewellery application states the hard, high-purity Pt alloy contains 10-100 ppm Ce with a minimum Pt content of 99 wt.% (5). Another patent is concerned with maintaining the high purity of platinum while increasing its hardness by …
https://www.technology.matthey.com/wp-content/uploads/pdf/2-15-pmr-jan05.pdf
DOI: 10.1595/147106705X24409 The Hardening of Platinum Alloys for Potential Jewellery Application Pure platinum (Pt) is generally too soft (HV ~ 60) to be used for fabricating jewellery, so alloying additions are made to increase the hardness. Platinum jewellery alloys usually have platinum contents of 90 wt.% and higher.
https://www.ingentaconnect.com/content/matthey/pmr/2005/00000049/00000001/art00001
Jan 01, 2005 · The Hardening of Platinum Alloys for Potential Jewellery Application Download Article: ... In order to identify platinum alloys suitable for hardening, platinum with different alloying additions was studied. Platinum alloys with additions of less than 7 wt.% of Ag, Au, Cu, Co, Cr, Fe, Ga, Ge, In, Mg, Mn, Mo, Ni, Si, Sn, Ta, Ti, V, W or Zr were ...
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Optimisation of a Jewellery Platinum Alloy for Precision Casting: Evaluation of Mechanical, Microstructural and Optical Properties. Two new platinum alloys proposed for jewellery …
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.136.8654
BibTeX @MISC{Biggs05contentsthe, author = {T. Biggs and S. S. Taylor and E. Van Der Lingen and Reviewed Donald and S. Cameron}, title = {Contents The Hardening of Platinum Alloys for Potential Jewellery 2 Application}, year = {2005}}
https://core.ac.uk/display/20994540
Contents The Hardening of Platinum Alloys for Potential Jewellery 2 Application By T. Biggs, S. S. Taylor, E. Van Der Lingen, Reviewed Donald and S. Cameron Year: 2005
https://www.ganoksin.com/article/platinum-alloy-applications-for-jewelry/
Platinum / Palladium Systems While there is palladium jewelry and findings being made, the main use for palladium in the jewelry industry is as an alloy with platinum. Adding palladium to platinum will add some hardness. Palladium oxidizes in the air and the oxides will take on multiple coloring at about 600°C.
https://www.gimat.com/platinum-jewellery-alloys/
Copper, cobalt, gold, iridium, palladium and ruthenium alloy easily with platinum. The differences between the alloys reflect the hardening effect of the alloying element itself. Of the platinum group metals ruthenium and iridium have a greater hardening effect than palladium.
https://www.assayofficelondon.co.uk/media/2564/platinum-jewellery-casting-alloys-teresa-frye.pdf
PLATINUM JEWELLERY CASTING ALLOYS: A COMPARATIVE STUDY OF SOLIDIFICATION BEHAVIOURS Teresa Fryé TechForm Advanced Casting Technology Portland, Oregon, USA Joerg Fischer-Buehner Legor Group S.p.A. Bressanvido, Italy ABSTRACT Platinum alloys are widely known to be quite challenging to cast, however the reasons for this are not well understood.
https://www.technology.matthey.com/article/57/3/202-213/
Platinum Alloys for Jewellery Platinum alloys containing other platinum group metals (pgms), gold and some base metals present a variety of workable materials that demonstrate high strength, increased hardness and springiness.
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