| http://www.w3.org/ns/prov#value | - According to various other example embodiments, chamber layer 50 may comprise other metals or metal alloys such as one or more of gold (Au), gold-tin (AuSn) alloys, gold-copper (AuCu) alloys, nickel-tungsten (NiW) alloys, nickel-boron (NiB) alloys, nickel-phosphorous (NiP) alloys, nickel-cobalt (NiCo) alloys, nickel-chromium (NiCr) alloys, silver (Ag), silver-copper (AgCu) alloys, palladium (Pd),
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