metallurgy Metallurgy is a domain of materials science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are known as alloys. Metallurgy encompasses both the sc ...

, titanium gold (Ti-Au or Au-Ti) refers to an

alloy An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductility, ...

consisting of

titanium Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...

and

gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile met ...

. Such alloys are used in

dentistry Dentistry, also known as dental medicine and oral medicine, is the branch of medicine focused on the teeth, gums, and mouth. It consists of the study, diagnosis, prevention, management, and treatment of diseases, disorders, and conditions o ...

ceramics A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain ...

and

jewelry Jewellery ( UK) or jewelry (U.S.) consists of decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a western ...

. Like many other alloys, titanium gold alloys have a higher yield strength,

tensile strength Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or F_\text within equations, is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials t ...

hardness In materials science, hardness (antonym: softness) is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. In general, different materials differ in their hardness; for example hard ...

, and

magnetism Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles ...

than either of its constituent metals. In July 2016, researchers discovered that a titanium-gold alloy, β-Ti₃Au (strictly speaking, an

intermetallic An intermetallic (also called an intermetallic compound, intermetallic alloy, ordered intermetallic alloy, and a long-range-ordered alloy) is a type of metallic alloy that forms an ordered solid-state compound between two or more metallic elemen ...

), is up to 4 times harder than titanium.

In popular culture

In the 2008 film ''

Iron Man Iron Man is a superhero appearing in American comic books published by Marvel Comics. The character was co-created by writer and editor Stan Lee, developed by scripter Larry Lieber, and designed by artists Don Heck and Jack Kirby. The charact ...

'', the

title character The title character in a narrative work is one who is named or referred to in the title of the work. In a performed work such as a play or film, the performer who plays the title character is said to have the title role of the piece. The title of ...

wears an armor made from a titanium-gold alloy. According to actor

Robert Downey Jr. Robert John Downey Jr. (born April 4, 1965) is an American actor and producer. His career has been characterized by critical and popular success in his youth, followed by a period of substance abuse and legal troubles, before a resurgence of ...

, who played the role of

, the suit fit him "like a gold-titanium glove".http://www.theinsider.com/news/842818_Robert_Downey_Jr._Says_Iron_Man_Suit_Fits_Him_Like_Gold_Titanium_Gold In the 2019 book ''

The Secret Commonwealth ''The Secret Commonwealth'' is a 2019 fantasy novel by Philip Pullman, the second volume of his planned trilogy ''The Book of Dust''. The story is set twenty years or so after the events of ''La Belle Sauvage'' and ten years after the conclusio ...

'' (part of the universe of

His Dark Materials ''His Dark Materials'' is a trilogy of fantasy novels by Philip Pullman consisting of '' Northern Lights'' (1995; published as ''The Golden Compass'' in North America), ''The Subtle Knife'' (1997), and ''The Amber Spyglass'' (2000). It follows ...

trilogy), the

alethiometer In Philip Pullman's ''His Dark Materials'' and '' The Book of Dust'' trilogies, Dust or Rusakov particles are particles associated with consciousness that are integral to the plot. In the multiverse in which these trilogies are set, Dust is at ...

is revealed to be made primarily of a titanium-gold alloy. In S6:E22 of ''

The Blacklist ''The Blacklist'' is an American crime thriller television series that premiered on NBC on September 23, 2013. The show follows Raymond "Red" Reddington (James Spader), a former U.S. Navy officer turned high-profile criminal who voluntarily sur ...

'' the show’s computer wizz, Aram Mojtabai, comments that the cage originally created to house Reddington is made of titanium gold alloy.

References

{{reflist Titanium alloys Precious metal alloys

In popular culture

See also

References