A kind of cobalt base alloy for surgical implant and application thereof

A cobalt-based alloy, surgical implantation technology, applied in the field of alloys, can solve problems such as sensitization, carcinogenicity, toxic and side effects, and achieve the effects of avoiding sensitization, avoiding the harm of nickel, and reducing preparation costs

Active Publication Date: 2015-10-28
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, except that cobalt-chromium-molybdenum alloys do not contain nickel in the existing cobalt-based alloys, other wrought cobalt-based alloys contain more than 9% nickel, and nickel ions have great potential toxic and side effects on the human body. sensitization, carcinogenic hazards

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  • A kind of cobalt base alloy for surgical implant and application thereof
  • A kind of cobalt base alloy for surgical implant and application thereof
  • A kind of cobalt base alloy for surgical implant and application thereof

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Embodiment Construction

[0026] According to the chemical composition range set by the cobalt-based alloy of the present invention, the cobalt-based alloy for surgical implantation of the present invention adopts 15 kg of vacuum induction furnace to smelt 4 furnace alloys (respectively numbering No. 1-4) and 1 furnace for comparison of cobalt-chromium-molybdenum alloys. 10 kg, the protective nitrogen pressure is 0.05-0.07MPa, and the nitrided alloy is MnN with a nitrogen content of 6% (wt%). These 5 furnace alloys are respectively cast into one φ80×150 ingot, and processed and heat treated as follows Process specifications for processing.

[0027] The forging process is as follows: the alloy ingot is homogenized and heat-treated at 1150°C±15°C for 2 hours to open the billet, and is forged in three fires to form a preliminary rolling billet, and the final forging temperature is 900°C.

[0028] The hot-rolling process is as follows: the first-rolled billet is kept at a temperature of 1150°C±15°C for 2 hou...

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Abstract

The invention discloses a novel forgeable cobalt-base alloy for surgical implant and application through which the content of cobalt and chromium is reduced on the basis of the Co-Cr-Mo alloy and the mechanical property and corrosion-resistant property are optimized by adding a proper amount of iron and manganese elements and by adding the nitrogen element. The novel forgeable cobalt-base alloy is characterized by comprising the following chemical components by weight: less than or equal to 0.08 percent of C, 16-24 percent of Cr, 10-20 percent of Fe, 5-20 percent of Mn, 2-6 percent of Mo, 0.2-0.6 percent of N, less than or equal to 0.1 percent of Ni, less than or equal to 0.5 percent of Si, less than or equal to 0.01 percent of S, less than or equal to 0.02 percent of P and the balance of Co. The alloy has excellent mechanical property and corrosion-resistant property, can be used for avoiding the nickel damage and reducing the cost of the alloy, has excellent toughness combination and cold and hot working performance and has important social and economic significance.

Description

technical field [0001] The invention belongs to the field of alloys, and particularly provides a cobalt-based alloy for surgical implantation and an application thereof. Background technique [0002] Cobalt-based alloys are alloy materials formed by adding elements such as chromium, nickel, molybdenum, and tungsten to cobalt as a matrix. Cobalt-based alloys are typically represented by cobalt-chromium-molybdenum alloys. They are mainly divided into two basic types: casting and hot forging. Such as cast CoCrMo alloy, forged CoCrMo alloy, CoNiCrMo and so on. Cobalt-based alloys have excellent wear resistance and corrosion resistance. According to their usage, cobalt-based alloys can be divided into cobalt-based wear-resistant alloys, cobalt-based high-temperature resistant alloys and cobalt-based wear-resistant alloys. [0003] Medical cobalt-based alloy has good corrosion resistance, wear resistance and thermal fatigue resistance, high thermal conductivity, low thermal expan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/07C22C1/02C22F1/10A61L27/04
Inventor 任伊宾王青川邵传伟肖克沈杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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