Titanium gold

In metallurgy, titanium gold (Ti-Au or Au-Ti) refers to an alloy consisting of titanium and gold. Such alloys are used in dentistry,[1][2] ceramics and jewelry.[3] Like many other alloys, titanium gold alloys have a higher yield strength, tensile strength, hardness, and magnetism than either of its constituent metals.[4]

In July 2016, researchers led by Emilia Morosan at Rice University discovered that a titanium-gold alloy, β-Ti3Au, is an intermetallic alloy that is up to 4 times harder than pure titanium and most steels.[4][5][6]

In the 2008 film Iron Man, the title character wears an armor made from a titanium-gold alloy.[7][8] According to actor Robert Downey Jr., who played the role of Iron Man, the suit fit him "like a gold-titanium glove".[9]

In the 2019 book The Secret Commonwealth (part of the universe of His Dark Materials trilogy), the alethiometer is revealed to be made primarily of a titanium-gold alloy.[10]

In S6:E22 of The Blacklist the show’s computer wizz, Aram Mojtabai, comments that the cage originally created to house Reddington is made of titanium gold alloy.

See also
  • Titanium nitride, a gold-coloured, hard-wearing coating for steel

References
  1. Fischer J (December 2000). "Mechanical, thermal, and chemical analyses of the binary system Au-Ti in the development of a dental alloy". J. Biomed. Mater. Res. 52 (4): 678–86. doi:10.1002/1097-4636(20001215)52:4<678::AID-JBM12>3.0.CO;2-P. PMID 11033550.
  2. Franke, P.; Neuschütz, D. (2007). "Au-Ti (Gold - Titanium)". In Franke, P.; Neuschütz, D. (eds.). Au-Ti (Gold–Titanium). Landolt-Börnstein - Group IV Physical Chemistry. Vol. 19B5. SpringerMaterials. pp. 1–5. doi:10.1007/978-3-540-45280-5_32. ISBN 978-3-540-45279-9.
  3. Gafner, Geoffrey (1989). "The development of 990 gold–titanium: its production, use and properties". Gold Bull. 22 (4): 112–122. doi:10.1007/BF03214709.
  4. Svanidze, Eteri; Besara, Tiglet; Ozaydin, M. Fevsi; Tiwary, Chandra Sekhar; Wang, Jiakui K.; Radhakrishnan, Sruthi; Mani, Sendurai; Xin, Yan; Han, Ke (2016-07-01). "High hardness in the biocompatible intermetallic compound β-Ti3Au". Science Advances. 2 (7): e1600319. Bibcode:2016SciA....2E0319S. doi:10.1126/sciadv.1600319. ISSN 2375-2548. PMC 4956191. PMID 27453942.
  5. "Titanium + gold = new gold standard for artificial joints". news.rice.edu. Retrieved 2016-09-17.
  6. "Lab discovers titanium-gold alloy that is four times harder than most steels". phys.org. Retrieved 2018-09-06.
  7. "Iron Man". Los Angeles Times. May 2008.
  8. "Iron Man | bit-tech.net".
  9. http://www.theinsider.com/news/842818_Robert_Downey_Jr._Says_Iron_Man_Suit_Fits_Him_Like_Gold_Titanium_Gold%5B%5D
  10. Pullman, Philip (3 October 2019). The Secret Commonwealth. Random House Children's Books. p. 313. ISBN 978-0553510669.
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