Titanium gold

{{Short description|Alloy consisting of titanium and 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,{{cite journal |author=Fischer J |title=Mechanical, thermal, and chemical analyses of the binary system Au-Ti in the development of a dental alloy |journal=J. Biomed. Mater. Res. |volume=52 |issue=4 |pages=678–86 |date=December 2000 |pmid=11033550 |doi=10.1002/1097-4636(20001215)52:4<678::AID-JBM12>3.0.CO;2-P}}{{cite book |last1=Franke |first1= P. |last2= Neuschütz |first2= D. |editor1-last = Franke | editor1-first = P. | editor2-last = Neuschütz | editor2-first = D. |title=Au-Ti (Gold–Titanium) |publisher=SpringerMaterials |doi=10.1007/978-3-540-45280-5_32 |year=2007 |volume=19B5 |pages=1–5|chapter= Au-Ti (Gold - Titanium) |series= Landolt-Börnstein - Group IV Physical Chemistry |isbn= 978-3-540-45279-9 }} ceramics and jewelry.{{cite journal |title= The development of 990 gold–titanium: its production, use and properties |first= Geoffrey |last= Gafner |journal= Gold Bull. |year= 1989 |volume= 22 |issue= 4 |pages= 112–122 |doi= 10.1007/BF03214709 |doi-access= free }} Like many other alloys, titanium gold alloys have a higher yield strength, tensile strength, hardness, and magnetism than either of its constituent metals.{{Cite journal|last1=Svanidze|first1=Eteri|last2=Besara|first2=Tiglet|last3=Ozaydin|first3=M. Fevsi|last4=Tiwary|first4=Chandra Sekhar|last5=Wang|first5=Jiakui K.|last6=Radhakrishnan|first6=Sruthi|last7=Mani|first7=Sendurai|last8=Xin|first8=Yan|last9=Han|first9=Ke|date=2016-07-01|title=High hardness in the biocompatible intermetallic compound β-Ti3Au|journal=Science Advances|language=en|volume=2|issue=7|pages=e1600319|doi=10.1126/sciadv.1600319|pmid=27453942|issn=2375-2548|bibcode=2016SciA....2E0319S|pmc=4956191}}

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.{{Cite web|url=http://news.rice.edu/2016/07/20/titanium-gold-new-gold-standard-for-artificial-joints/|title=Titanium + gold = new gold standard for artificial joints|website=news.rice.edu|access-date=2016-09-17}}{{Cite web|url=https://phys.org/news/2016-07-lab-titanium-gold-alloy-harder-steels.html|title=Lab discovers titanium-gold alloy that is four times harder than most steels|website=phys.org|access-date=2018-09-06}}