US 8,524,150 B2 · Dental alloy with a high gold content that is devoid of palladium and copper

Abstract

A dental alloy with a high gold content that is devoid of palladium and copper. To achieve high mechanical stability, the dental alloy contains between 75 and 95 wt. % Au, between 5 and 20 wt. % Pt, between 0.5 and 3.5 wt. % Zn and/or Sn and/or In, between 0.1 and 0.8 wt. % of an element of a group I, in addition to a single particle refiner of a group II. The weight fraction of the element of group I is between 2 and 6 times that of the single particle refiner of group II, and one element of group I is represented by Nb or Ta or Ti or V and the particle refiner of group II is represented by Ir or Rh.

Claims7

Dependent claims

Palladium- and copper-free high-gold-content dental alloy, the dental alloy consisting essentially of, by weight:

75 to 95% Au,
5 to 20% Pt,
0.5 to 3.5% of at least one element selected from the group consisting of Zn, Sn, and In,
0.1 to 0.8% of an element of a group I element selected from the group consisting of Nb, Ti and V, and
a single particle refiner of a group II element selected from the group consisting of Ir and Rh,
wherein the weight proportion of the group I element is 2 to 6 times greater than the group II element,
wherein when the group I element is Nb, the group II element is Ir, and when the group I element is Ti or V, the group II element is Ir or Rh, and
wherein said Au, said Pt, said at least one element, said group I element and said group II element make up 100% by weight of said alloy.

5 more elements

Dependencies are inferred from the claim text.

Dental alloy with a high gold content that is devoid of palladium and copper

Life of this patent

Dental alloy with a high gold content that is devoid of palladium and copper

Life of this patent

Abstract

Claims7