Cobalt base alloy for fixing human skeletons and preparation method thereof

A cobalt-based alloy and bone technology, applied in the field of alloys, can solve problems such as biosafety rarely considered, achieve excellent strength and toughness combination and cold and hot processing performance, ensure biocompatibility, and improve the effect of solubility

Inactive Publication Date: 2018-07-13
王甲林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the development process of medical cobalt-based alloys, the selection of alloys is closely related to the design of cobalt-based alloys used in the industrial field. Most of the medical cobalt-based alloys actually used in hospitals are directly from the industrial field, and their alloy composition and processing technology are all different. It is close to industrial cobalt-based alloys, and rarely considers biological safety and other issues while paying attention to material performance

Method used

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  • Cobalt base alloy for fixing human skeletons and preparation method thereof
  • Cobalt base alloy for fixing human skeletons and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A cobalt-based alloy for fixing human bones, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 22.5%, Ni: 7%, W: 11%, Mo: 3%, Ta: 0.5%, Si: 0.1%, Mn: 0.1%, Nb: 0.1%, Cu: 1.0%, N: 0.1%, Sc+La+Ce: 0.01%, and the balance is Co and unavoidable impurity elements. The specific manufacturing method is as follows:

[0042] (1) Ingredients: According to the composition design required by the cobalt-based alloy, the ingredients are first carried out, and the Co-Cr master alloy is selected. The Co:Cr mass ratio in the Co-Cr master alloy is 1.35-1.45:1; the Cr-Ni master alloy is selected. , the mass ratio of Cr:Ni is 1.05-1.1:1; the Co-Mo master alloy is selected, wherein the mass ratio of Co:Mo is 1.55-1.65:1, and other low-melting elements are in the form of simple metals with a purity of 99.99% and / or low Added in the form of melting point master alloy;

[0043] (2) Alloy smelting: preheat alloy ingot / powder in a crucible a...

Embodiment 2

[0051]A cobalt-based alloy for fixing human bones, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 23%, Ni: 7.5%, W: 11.5%, Mo: 3.5%, Ta: 1%, Si: 0.5%, Mn: 0.3%, Nb: 0.3%, Cu: 1.5%, N: 0.15%, Sc+La+Ce: 0.05%, and the balance is Co and unavoidable impurity elements.

[0052] (1) Ingredients: According to the composition design required by the cobalt-based alloy, the ingredients are first carried out, and the Co-Cr master alloy is selected. The Co:Cr mass ratio in the Co-Cr master alloy is 1.35-1.45:1; the Cr-Ni master alloy is selected. , the mass ratio of Cr:Ni is 1.05-1.1:1; the Co-Mo master alloy is selected, wherein the mass ratio of Co:Mo is 1.55-1.65:1, and other low-melting elements are in the form of simple metals with a purity of 99.99% and / or low Added in the form of melting point master alloy;

[0053] (2) Alloy smelting: Preheat alloy ingot / powder in a crucible at 300-350°C, then move it into an induction melt...

Embodiment 3

[0061] A cobalt-based alloy for fixing human bones, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 24.5%, Ni: 8%, W: 12%, Mo: 4%, Ta: 1.5%, Si: 0.8%, Mn: 0.5%, Nb: 0.5%, Cu: 2.0%, N: 0.2%, Sc+La+Ce 0.08%, and the balance is Co and unavoidable impurity elements.

[0062] (1) Ingredients: According to the composition design required by the cobalt-based alloy, the ingredients are first carried out, and the Co-Cr master alloy is selected. The Co:Cr mass ratio in the Co-Cr master alloy is 1.35-1.45:1; the Cr-Ni master alloy is selected. , the mass ratio of Cr:Ni is 1.05-1.1:1; the Co-Mo master alloy is selected, wherein the mass ratio of Co:Mo is 1.55-1.65:1, and other low-melting elements are in the form of simple metals with a purity of 99.99% and / or low Added in the form of melting point master alloy;

[0063] (2) Alloy smelting: Preheat alloy ingot / powder in a crucible at 300-350°C, then move it into an induction melting...

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Abstract

The invention discloses a cobalt base alloy for fixing human skeletons. The cobalt base alloy is characterized by comprising the following chemical components in percentage by weight: 22.5-24.5% of Cr, 7-8% of Ni, 11-12% of W, 3-4% of Mo, 0.5-1.5% of Ta, 0.1-0.8% of Si, 0.1-0.5% of Mn, 0.1-0.5% of Nb, 1.0-2.0% of Cu, 0.1-0.2% of N, 0.01-0.08% of Sc+La+Ce, and the balance of Co and inevitable impurity elements. The yield strength of the cobalt base alloy is not less than 710 MPa, the tensile strength is not less than 820 MPa, the elongation is not less than 20%, and the sterilization rate is not less than 93.8%; and all the indexes are obviously higher than that of other products short of alloy elements, products not performing atomized pulverization and similar products not performing surface coating treatment.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular provides a cobalt-based alloy for fixing human bones. Background technique [0002] Cobalt-based alloy has good corrosion resistance, wear resistance and thermal fatigue resistance, high thermal conductivity, low thermal expansion coefficient, Young's modulus does not change with its strength, and good biocompatibility, so it is widely used It is used in the fields of national defense, chemical industry, energy and biological engineering, and it can also be used as a medical metal material. As a medical metal material, cobalt-based alloys are mainly used in the manufacture of various artificial joints, artificial bones and orthopedic internal and external fixtures, dentures and fixed bridges in dental restorations, and can also be used in cardiovascular surgery and plastic surgery. [0003] Cobalt-based alloys have excellent mechanical properties, wear resistance and biocompatibility, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22C1/03C22C1/04B22F9/08B22F3/10B22F3/24
CPCC22C19/07B22F3/1007B22F3/24B22F9/082B22F2003/242B22F2003/248B22F2009/0828C22C1/03C22C1/045
Inventor 王甲林
Owner 王甲林
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