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Cobalt-base alloy for artificial tooth and preparation method of cobalt-base alloy

A technology of cobalt-based alloys and dentures, applied in the field of alloys, can solve problems such as biological safety that are rarely considered, and achieve the effects of excellent combination of strength and toughness, cold and hot processing performance, reduced oxygen content, excellent mechanical properties and corrosion resistance

Inactive Publication Date: 2018-06-29
温州市赢创新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 artificial tooth and preparation method of cobalt-base alloy

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Experimental program
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Effect test

Embodiment 1

[0040] A cobalt-based alloy for dentures, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 22.5%, Ni: 3%, W: 9%, Mo: 3%, Ta: 0.5%, Si: 0.1%, Mn: 0.1%, Ti: 0.1%, Cu: 1.0%, N: 0.1%, Sc+Y+La: 0.01%, and the balance is Co and unavoidable impurity elements. The specific manufacturing method is as follows:

[0041] (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;

[0042] (2) Alloy smelting: Preheat the alloy ingot / powder in a crucible at 200-28...

Embodiment 2

[0049] A cobalt-based alloy for dentures, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 23%, Ni: 3.5%, W: 9.5%, Mo: 3.5%, Ta: 1%, Si: 0.5%, Mn: 0.3%, Ti: 0.3%, Cu: 1.5%, N: 0.15%, Sc+Y+La: 0.05%, and the balance is Co and unavoidable impurity elements. The preparation method of cobalt-based alloy is:

[0050] (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;

[0051] (2) Alloy smelting: Preheat the alloy ingot / powder in a crucible at 200...

Embodiment 3

[0058] A cobalt-based alloy for dentures, characterized in that: by weight percentage, the chemical composition of the cobalt-based alloy is: Cr: 24.5%, Ni: 4%, W: 10%, Mo: 4%, Ta: 1.5%, Si: 0.8%, Mn: 0.5%, Ti: 0.5%, Cu: 2.0%, N: 0.2%, Sc+Y+La 0.08%, the balance is Co and unavoidable impurity elements. The preparation method of cobalt-based alloy is:

[0059] (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;

[0060] (2) Alloy smelting: Preheat the alloy ingot / powder in a crucible at 200-280°C,...

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Abstract

The invention discloses a cobalt-base alloy for an artificial tooth. The cobalt-base alloy is characterized by comprising the following chemical components in percentage by weight: 22.5-24.5% of Cr, 3-4% of Ni, 9-10% 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 Ti, 1.0-2.0% of Cu, 0.1-0.2% of N, 0.01-0.08% of Sc+Y+La and the balance of Co and inevitable impurity elements. The yield strength of the cobalt-base alloy is greater than or equal to 700MPa, the tension strength of the cobalt-base alloy is greater than or equal to 800MPa, the elongation rate of the cobalt-base alloy is greater than or equal to 18%, the sterilization rate of the cobalt-base alloy is greater than or equal to 92%, and the indexes are remarkably higher than those of other products without alloy elements, remarkably higher than products without flow energy grinded powder, and remarkably higher than similar products without surface coating treatment.

Description

technical field [0001] The invention belongs to the field of alloys, and particularly provides a cobalt-based alloy for dentures. 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 are widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/03C22C1/04B22F9/04B22F3/14B22F3/24
CPCB22F3/14B22F3/24B22F9/04B22F2003/242B22F2003/248B22F2009/041C22C1/03C22C1/045C22C19/055
Inventor 周建武
Owner 温州市赢创新材料技术有限公司
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