| 摘要 |
For fusing to dental porcelain, rare metal alloys are required which contain as little gold as possible and nevertheless have adequate elongation at break between 500 and 800 DEG C, with comparable other mechanical and metallurgical properties. Such alloys consist of 20 to 85% of palladium, 0 to 55% of gold, 0 to 40% of silver, 1 to 15% of tin and/or indium and in each case 0.05 to 1% of one or more of the elements iridium, rhenium, ruthenium, silicon, iron, copper or zinc, and additionally contain 0.1 to 3% of gallium and 0.05 to 1% of tantalum and/or 0.05 to 1% of tungsten and/or 0.05 to 0.2% of yttrium.
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