Cobalt-chromium-based alloy for porcelain teeth and preparation method thereof

A technology of cobalt-chromium base and base alloy for porcelain teeth, applied in dental preparations, dentistry, dental prosthesis, etc., can solve the problems of allergic reaction, reputation impact of nickel-chromium alloy, etc., and achieve the effect of good acid resistance and high promotion and application value

Inactive Publication Date: 2013-03-20
LUOYANG BEIYUAN SPECIAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there have been media reports that nickel-chromium alloys may have allergic reactions with the human body, which has affected the reputation of nickel-chromium alloys

Method used

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Embodiment Construction

[0010] Below in conjunction with embodiment this patent is further explained and illustrated. But the scope of protection of this patent is not limited to the specific implementation.

[0011] Dosing (mass %) according to the following chemical groups:

[0012] No. Cobalt Chromium Molybdenum Tungsten Iron Niobium Titanium Lanthanum Manganese

[0013] A 63.1 23 5 6 1 0.5 1 0.3 0.1

[0014] B 61.5 25 5 5 0.8 0.7 1.2 0.5 0.3

[0015] C 62 23 7 4 0.7 1 1.5 0.4 0.4

[0016] D 62.7 24 6 4 0.9 0.8 1 0.1 0.5

[0017] E62.4 24.5 5.5 4.5 0.8 0.6 1.3 0.2 0.2

[0018] Put the ingredients of the above chemical components into a high-temperature crucible, and heat and melt in a vacuum intermediate frequency or high-frequency furnace; stir the high-temperature molten liquid for 5-10 seconds; cast the uniformly stirred molten liquid into a square mold of 10×10×10mm or Ф In a cylindrical mold of 10×10mm, an ingot is formed after natural cooling; the ingot is sandblasted to remove its s...

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Abstract

The present invention provides a cobalt-chromium-based alloy for porcelain teeth and a preparation method thereof. The alloy includes by weight: 23-25% of Cr, 5-7% of molybdenum, 4-6% of tungsten, 0.7-1% of iron, 0.5-1% of niobium, 1-1.5% of titanium, 0.1-0.5% of lanthanum, 0.1-0.5% of manganese, and the balance being cobalt. The ingredients are put into a high-temperature ceramic crucible and heated and melted in a vacuum intermediate frequency or high frequency furnace. The high-temperature molten solution is stirred for 5-10 seconds. The uniformly stirred molten solution is cast into a square mold or a cylindrical mold. An ingot is formed after natural cooling. The surface attachments of the ingot are removed by sandblasting. Lastly the ingot is polished to the cobalt-chromium-based alloy for the porcelain teeth. The cobalt-chromium-based alloy prepared by using the above technical solution has good acid and alkali corrosion resistance, is not easy to generate an allergic reaction with human bodies as the porcelain teeth alloy, and does not make the porcelain teeth produce the dark side phenomenon by long-term use, thereby having a high application value.

Description

technical field [0001] The invention relates to an alloy material technology, in particular to a cobalt-chromium-based alloy for ceramic teeth and a preparation method thereof. Background technique [0002] The so-called porcelain tooth is to coat a layer of glaze material on the metal crown, and the glaze material is melted by high-temperature calcination to form a denture restoration similar to the color and luster of real teeth. There are many kinds of metal materials for making porcelain crowns and brackets, but the most commonly used ones are nickel-chromium alloys. Due to the high quality and low price of nickel-chromium alloys, they are the first choice of most people, and the demand is still the largest. However, there have been media reports that nickel-chromium alloys may have allergic reactions with the human body, which has affected the reputation of nickel-chromium alloys. Although the proportion of this group of people is very small, people continue to explor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22C1/02A61K6/04
Inventor 李军孙学义雷复兴
Owner LUOYANG BEIYUAN SPECIAL CERAMICS
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