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White dental alloy with low gold content - contains silver, palladium and copper and has high corrosion resistance
White dental alloy with low gold content - contains silver, palladium and copper and has high corrosion resistance
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机译:含金量低的白色牙科合金-包含银,钯和铜,并且具有较高的耐腐蚀性
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摘要
Dental casting alloy, contg. by wt. 20% gold, 18-22% palladium, 10-14% copper, 0.1-2% indium, 0.05-0.5% iridium and/or ruthenium, and min. 40% silver as the rest. The alloy may also contain 5% max. platinum. The pref. alloy has compsn. (A) 20% Au, 18% Pd, 48.95% Ag, 12% Cu, 0.5% In, 0.5% Pt, 0.05% Ir + Ru. The alloy is pref. melted, cast into a mould and, as soon as it has cooled to 700 degrees C, it is quenched in water together with the mould. Used in crowns, bridges, and other prostheses. Good corrosion resistance, and a fine-grained, homogeneous structure providing good resistance to tarnishing, with good mechanical properties are provided. The alloy has wt. ratio Pd:Au of 0.9-1.1:1.
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