SILVER ALLOY EXCELLING IN PERFORMANCE OF REFLECTANCE MAINTENANCE

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A silver alloy excelling in performance of reflectance maintenance, comprising silver as a main component and at least one rare earth element as a first dopant element. The first dopant element is preferably samarium, neodymium, lanthanum, cerium, ytterbium, terbium, dysprosium, holmium, erbium, thulium, europium or gadolinium. The silver alloy further contains at least one of copper, manganese, silicon, chromium, nickel, cobalt, yttrium, iron, scandium, zirconium, niobium, molybdenum, tantalum, tungsten, platinum, gold, rhodium, iridium, palladium, indium, tin, lead, aluminum, calcium, gallium, bismuth, antimony, strontium, hafnium and germanium.