Skip to content
1887
  1. Home
  2. A-Z Publications
  3. Johnson Matthey Technology Review
  4. Volume 67, Issue 3
  5. Article
Volume 67, Issue 3
  • ISSN: 2056-5135
file format pdf download PDF

Abstract

Jewellery-specific standardised tests as well as bulk metallic glass (BMG)-specific testing methods were performed on a series of platinum-based BMGs with and without phosphorus, to evaluate their suitability as jewellery items. Their mechanical properties (elasticity, Young’s modulus and yield stress) were determined by three-point beam bending measurements. Hardness, wear and corrosion resistance were tested in comparison to state-of-the-art crystalline platinum-based jewellery alloys. The platinum-BMG alloys exhibit elastic elongation of about 2%. Compared to conventional crystalline platinum-alloys, their fracture strength of . 2 GPa and their hardness of . 450 HV1 is four and two times higher, respectively. However, the BMGs show less abrasion resistance in the pin-on-disc test than the conventional benchmark alloys due to adhesive wear and microcracking. Regarding the corrosion resistance in simulated body fluids, the BMG alloys reveal a slightly higher release of metals, while the tarnishing behaviour is comparable to the benchmark alloys. The phosphorus-free platinum-BMG alloy showed pronounced tarnishing during exposure to air at elevated temperature. The outstanding thermoplastic formability, a special feature of amorphous metals that can be crucial for enabling novel and filigree designs, was determined and quantified for all BMG alloys.

© Johnson Matthey
Loading

Article metrics loading...

/content/journals/10.1595/205651323X16577027080875
2022-07-13
2024-05-17
Loading full text...

Full text loading...

/deliver/fulltext/jmtr/67/3/Schmitt_16a_Imp.html?itemId=/content/journals/10.1595/205651323X16577027080875&mimeType=html&fmt=ahah

References

  1. Schroers J., and Johnson W. I. ‘Pt-Base Bulk Solidifying Amorphous Alloys’, US Patent 7,582,172; 2009 [Google Scholar]
  2. Schroers J., Lohwongwatana B., Johnson W. L., and Peker A. Mater. Sci. Eng. A., 2007, 449–451, 235 LINK https://doi.org/10.1016/j.msea.2006.02.301 [Google Scholar]
  3. Schroers J., and Johnson W. L. Appl. Phys. Lett., 2004, 84, (18), 3666 LINK https://doi.org/10.1063/1.1738945 [Google Scholar]
  4. Lohwongwatana B., Johnson W. L., and Schroers J. ‘Liquidmetal – Hard 18K and .850Pt Alloys that can be Processed like Plastics or Blown like Glass’, in 21st Santa Fe Symposium on Jewelry Manufacturing Technology, Albuquerque, New Mexico, USA, 20th–23rd May, 2007, pp. 288–303 LINK https://www.santafesymposium.org/2007-santa-fe-symposium-papers/2007-liquid-metal-hard-18k-and-850pt-alloys-that-can-be-processed-like-plasticsor-blown-like-glass [Google Scholar]
  5. Schroers J., and Johnson W. L. Phys. Rev. Lett., 2004, 93, (25), 255506 LINK https://doi.org/10.1103/PhysRevLett.93.255506 [Google Scholar]
  6. Heiss T., Klotz U. E., and Tiberto D. Johnson Matthey Technol. Rev., 2015, 59,(2), 95 LINK https://doi.org/10.1595/205651315X687399 [Google Scholar]
  7. Butler J. Platinum Metals Rev., 2011, 55, (1), 2 LINK https://doi.org/10.1595/147106711X548825 [Google Scholar]
  8. Klotz U. E., Heiss T., and Tiberto D. Johnson Matthey Technol. Rev., 2015, 59,(2), 129 LINK https://doi.org/10.1595/205651315X687515 [Google Scholar]
  9. Klotz U. E., and Fryé T. Johnson Matthey Technol. Rev., 2019, 63, (2), 89 LINK https://doi.org/10.1595/205651319X15487786873383 [Google Scholar]
  10. Saotome Y., Fukuda Y., Yamaguchi I., and Inoue A. J. Alloys Compd., 2007, 434–435, 97 LINK https://doi.org/10.1016/j.jallcom.2006.08.126 [Google Scholar]
  11. Kumar G., Desai A., and Schroers J. Adv. Mater., 2011, 23, (4), 461 LINK https://doi.org/10.1002/adma.201002148 [Google Scholar]
  12. Klotz U. E., Heiss T., and Fryé T. Johnson Matthey Technol. Rev., 2021, 65, (3), 480 LINK https://doi.org/10.1595/205651321X16189971801978 [Google Scholar]
  13. “Werkstoffkunde”, eds. Bargel H.-J., and Schulze G. 11th Edn., Springer Vieweg, Berlin, Germany, 2012 [Google Scholar]
  14. Houghton O. S., and Greer A. L. Johnson Matthey Technol. Rev., 2021, 65, (4), 506 LINK https://doi.org/10.1595/205651321X16045078967011 [Google Scholar]
  15. Gross O. ‘Precious Metal Based Bulk Glass-Forming Liquids: Development, Thermodynamics, Kinetics and Structure’, Univeristät des Saarlandes, Germany, 2018 LINK https://doi.org/10.22028/D291-27993 [Google Scholar]
  16. Kuball A., Bochtler B., Gross O., Pacheco V., Stolpe M., Hechler S., and Busch R. Acta Mater., 2018, 158, 13 LINK https://doi.org/10.1016/j.actamat.2018.07.039 [Google Scholar]
  17. Donovan P. E. Acta Metall., 1989, 37, (2), 445 LINK https://doi.org/10.1016/0001-6160(89)90228-9 [Google Scholar]
  18. Kuball A., Gross O., Bochtler B., Adam B., Ruschel L., Zamanzade M., and Busch R. J. Alloys Compd., 2019, 790, 337 LINK https://doi.org/10.1016/j.jallcom.2019.03.001 [Google Scholar]
  19. ‘Metallic Materials – Vickers Hardness Test – Part 1: Test Method’, ISO 6507-1:2018, International Organization for Standardization, Geneva, Switzerland, 2018 LINK https://www.iso.org/standard/64065.html [Google Scholar]
  20. ‘Reference Test Method for Release of Nickel from all Post Assemblies which are Inserted into Pierced Parts of the Human Body and Articles Intended to Come into Direct and Prolonged Contact with the Skin’, DIN EN 1811:2015-10, Beuth Verlag GmbH, Berlin, Germany, 2015 LINK https://www.beuth.de/en/standard/din-en-1811/238244384 [Google Scholar]
  21. ‘Dentistry – Corrosion Test Methods For Metallic Materials’, ISO 10271:2020, Beuth Verlag GmbH, Berlin, Germany, 2020 LINK https://www.beuth.de/de/norm/din-en-iso-10271/324949587 [Google Scholar]
  22. ‘Copper and Copper Alloys – Inductively Coupled Plasma Optical Emission Spectrometry’, DIN EN 15605:2010-12, Beuth Verlag GmbH, Berlin, Germany, 2010 LINK https://www.beuth.de/en/standard/din-en-15605/125383053 [Google Scholar]
  23. ‘Colorimetry – Part 1: Basic Terms of Colorimetry’, DIN 5033-1:2017-10, Beuth Verlag GmbH, Berlin, Germany, 2017 LINK https://www.beuth.de/en/standard/din-5033-1/277160102 [Google Scholar]
  24. ‘Colorimetric Evaluation of Colour Coordinates and Colour Differences According to the Approximately Uniform CIELAB Colour Space’, DIN 6174:2007-10, Beuth Verlag GmbH, Berlin, Germany, 2007 LINK https://www.beuth.de/en/standard/din-6174/99604465 [Google Scholar]
  25. ‘Standard Test Method for Yellowness Index of Plastics’, ASTM D1925, 70th Edn., ASTM International, West Conshohocken, USA, May, 1977 LINK https://www.astm.org/standards/d1925 [Google Scholar]
  26. Schroers J. Acta Mater., 2008, 56, (3), 471 LINK https://doi.org/10.1016/j.actamat.2007.10.008 [Google Scholar]
  27. Neuber N., Gross O., Frey M., Bochtler B., Kuball A., Hechler S., Gallino I., and Busch R. Acta Mater., 2021, 220, 117300 LINK https://doi.org/10.1016/j.actamat.2021.117300 [Google Scholar]
  28. Gross O., Neuber N., Kuball A., Bochtler B., Hechler S., Frey M., and Busch R. Comm. Phys., 2019, 2, 83 LINK https://doi.org/10.1038/s42005-019-0180-2 [Google Scholar]
  29. Rakhtsaum G. Platinum Metals Rev., 2013, 57, (3), 202 LINK https://doi.org/10.1595/147106713X668596 [Google Scholar]
  30. Gross O., Bochtler B., Stolpe M., Hechler S., Hembree W., Busch R., and Gallino I. Acta Mater., 2017, 132, 118 LINK https://doi.org/10.1016/j.actamat.2017.04.030 [Google Scholar]
  31. Bochtler B., Kruse O., and Busch R. J. Phys.: Condens. Matter, 2020, 32, (24), 244002 LINK https://doi.org/10.1088/1361-648X/ab7ad7 [Google Scholar]
  32. Kruzic J. J. Adv. Eng. Mater., 2016, 18, (8), 1308 LINK https://doi.org/10.1002/adem.201600066 [Google Scholar]
  33. Arrazola P.-J., Garay A., Iriarte L.-M., Armendia M., Marya S., and Le Maître F. J. Mater. Proc. Technol., 2009, 209, (5), 2223 LINK https://doi.org/10.1016/j.jmatprotec.2008.06.020 [Google Scholar]
  34. Hylén A., Ölund P., Ghadamgahi M., Lille S., and Svensson E. ‘Understanding Wear Mechanisms – The Application Technology Behind WR-Steel®’, Ovako AB, Stockholm, Sweden, 2021, 16 pp LINK https://www.ovako.com/4afd64/globalassets/steel-portfolio/brands/wr-steel_understanding_wear_mechanisms.pdf [Google Scholar]
  35. Medina M. A., Acikgoz O., Rodriguez A., Meduri C. S., Kumar G., and Baykara M. Z. Lubricants, 2020, 8, (9), 85 LINK https://doi.org/10.3390/lubricants8090085 [Google Scholar]
  36. Suryanarayana C., and Inoue A. “Bulk Metallic Glasses”, CRC Press, Boca Raton, USA, 2011 [Google Scholar]
  37. Eisenbart M. ‘On the Processing and the Tarnishing Mechanism of Gold-Based Bulk Metallic Glasses’, Universität des Saarlandes, Germany, 2015 [Google Scholar]
  38. Gross O., Eisenbart M., Schmitt L.-Y., Neuber N., Ciftci L., Klotz U. E., Busch R., and Gallino I. Mater. Des., 2018, 140, 495 LINK https://doi.org/10.1016/j.matdes.2017.12.007 [Google Scholar]
  39. Neuber N., Gross O., Eisenbart M., Heiss A., Klotz U. E., Best J. P., Polyakov M. N., Michler J., Busch R., and Gallino I. Acta Mater., 2019, 165, 315 LINK https://doi.org/10.1016/j.actamat.2018.11.052 [Google Scholar]
  40. Gross O., Riegler S. S., Stolpe M., Bochtler B., Kuball A., Hechler S., Busch R., and Gallino I. Acta Mater., 2017, 141, 109 LINK https://doi.org/10.1016/j.actamat.2017.09.013 [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1595/205651323X16577027080875
Loading
Study on Technical Parameters and Suitability of Platinum-Based Metallic Glasses for Jewellery Applications
Johnson Matthey Technology Review 67, 317 (2023); https://doi.org/10.1595/205651323X16577027080875
/content/journals/10.1595/205651323X16577027080875
/content/journals/10.1595/205651323X16577027080875
Loading

Data & Media loading...

  • Article Type: Research Article

Most Cited Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error