1989
DOI: 10.1007/bf03214709
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The development of 990 gold — titanium: Its production, use and properties

Abstract: Pure gold with only one per cent of titanium may well be the only significantly different new jewellery and coinage alloy developed in recent times. In this paper, an account is given of the development of a 990 fineness gold alloy with good colour, durability and mechanical properties, and why titanium was chosen as the alloying metal. Methods are described for the alloy's production, solutionizing and age -hardening. Mechanical properties are given as a function of deformation, age -hardening time and temper… Show more

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Cited by 36 publications
(19 citation statements)
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“…Trials have been undertaken in order to precipitation-harden gold by only one weight percent of titanium. By an appropriate heat treatment, precipitation hardening of this a1 loy occurs; hence its mechanical properties match those of a 9 carat a1 loy while still retaining the hue and bri 1 liance of 999 fine gold [5]. On the other hand, the 990 gold-titanium alloy finds supplementary application in the field of semiconductor interconnections.…”
Section: Au-timentioning
confidence: 97%
“…Trials have been undertaken in order to precipitation-harden gold by only one weight percent of titanium. By an appropriate heat treatment, precipitation hardening of this a1 loy occurs; hence its mechanical properties match those of a 9 carat a1 loy while still retaining the hue and bri 1 liance of 999 fine gold [5]. On the other hand, the 990 gold-titanium alloy finds supplementary application in the field of semiconductor interconnections.…”
Section: Au-timentioning
confidence: 97%
“…This alloywith a 990 millesimal fineness (i.e. 99.0 % gold) can be endowed with the mechanical properties of a 9 carat alloy while retaining the hue and surface brilliance of 24 carat gold [ 13] . These improved Heat-treatment time, s…”
Section: Fine Wire Of the Au-iwt%ti Alloy Precipitation Strengthenedmentioning
confidence: 99%
“…Estas aleaciones han tenido aplicaciones limitadas por las bajas propiedades mecánicas. No obstante, se han realizado algunas investigaciones para mantener la alta ley de oro, usando como aleante el titanio, el cual permite mejorar las propiedades mecánicas y a su vez conservar el color amarillo característico del oro puro [2][3][4]. En este tipo de aleaciones, una de las alternativas para la fabricación de joyas mas económicas es por medio de láminas delgadas conformadas y unidas por procesos de soldadura blanda, lo cual exige el uso de material de aporte que conserve las características de alta ley del sustrato.…”
Section: Introductionunclassified