| 摘要 |
A cobalt-chromium alloy consisting essentially of: Element Weight Percent Cobalt 50-70 Chromium 25-35 Molybdenum 2-10 Manganese 0-2 Carbon 0-0.1 and (i) from about 1 to about 6% silicon or (ii) from about 2 to about 6% silicon and from about 0.1 to about 1.5% boron with the proviso that the combined amount of silicon and boron is greater than or equal to 3% or (iii) from about 1 to about 6% aluminum or (iv) from about 1 to about 6% silicon and from about 1 to about 6% aluminum with the proviso that the combined amount of silicon and aluminum is less than about 8% or (v) from about 1 to about 6% silicon, from about 0.1 to about 1.5% boron and from about 1 to about 6% aluminum with the proviso that the combined amount of silicon and aluminum is less than about 8%, said alloy constituents totalling 100%. These alloys exhibit outstanding physical properties and can be used advantageously as a substitute for precious metals and alloys thereof as well as nickel-chromium-based alloys in the fabrication of porcelain-veneered fixed bridgework and crowns.
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