| abstract |
Dental alloy, essentially consisting of: 35-70 wt% of silver, 15-55 wt% of palladium, 0-10 wt% of gold, 0-10 wt% of platinum, 0-5 wt% of zinc and/or germanium, 0-10 wt% of indium, tin and/or gallium, 0-1 wt% of silicon and/or boron, 0-3 wt% of tantalum, tungsten, titanium, rhenium, and/or aluminium, 0-0.4 wt% of rhodium, iridium and/or ruthenium, 0-2 wt% of scandium, lanthanum, yttrium and/or rare earths, provided that the amount of zinc, indium, tin and gallium in total amounts to 2-15 wt%. The alloy is suitable for dental porcelain having a thermal expansion coefficient, measured at a temperature of from 20 to 500 degree C, of greater than 14.5 m/m. degree C and a firing temperature below 950 degree C being fired thereonto. |