CN104263999A - Novel high-plasticity medical cobalt-based alloy - Google Patents
Novel high-plasticity medical cobalt-based alloy Download PDFInfo
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- CN104263999A CN104263999A CN201410533616.5A CN201410533616A CN104263999A CN 104263999 A CN104263999 A CN 104263999A CN 201410533616 A CN201410533616 A CN 201410533616A CN 104263999 A CN104263999 A CN 104263999A
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Abstract
The invention discloses a novel high-plasticity medical cobalt-based alloy. The medical cobalt-based alloy comprises the following ingredients in percentage by mass: not larger than 0.35 of C, 26.0-30.0 of Cr, 5.0-7.0 of Mo, larger than or equal to 0.05 and smaller than or equal to 0.5 of one or two of Zr, Nb and Ti and the balance of cobalt. The cobalt-based alloy is cast-molded by a conventional smelting technical method. After solid dissolution or aging treatment, the tensile strength at break of the novel micro-alloyed medical cobalt-based alloy at a room temperature is in a range of 700-1000Mpa, the yield strength is in a range of 550-750Mpa, and the elongation at break is 10.0-20.0%. The novel alloy fully meets medical requirements.
Description
Technical field
The present invention relates to a kind of novel high-ductility Medical Cobalt-Based Alloys material, belong to specialty alloy materials technical field.
Background technology
The sosoloid that Medical Cobalt-Based Alloys is is basal component with cobalt and chromium, main containing alloying elements such as cobalt, chromium, molybdenums, cobalt base alloy tissue, primarily of austenitic matrix and carbide reinforced phase composite, is mainly used in the manufacture of various joint prosthesis, artificial bone and orthopaedics internal and external fixators part; Artificial tooth in gear division reparation; The manufacture of various casting crown, inlay and fixed bridge; Cardiovascular surgery and plastic surgery etc. can also be used for.Therefore, Medical Cobalt-Based Alloys has good biocompatibility except requiring, outside corrosion resistance nature, abrasion resistance properties, also requires that cobalt base alloy has enough intensity and toughness.But routine meets the demands substantially according to ASTM F75 standard preparation casting CoCrMoC alloy strength, but plasticity can not meet service requirements.
Summary of the invention
The object of the present invention is to provide a kind of novel high-ductility Medical Cobalt-Based Alloys having good corrosion resistance and mechanical property.
The present invention is achieved by the following technical solution:
A kind of novel high-ductility Medical Cobalt-Based Alloys, this cobalt-based has following composition and mass percent (%): C≤0.35, Cr26.0-30.0, Mo5.0-7.0,0.05≤Zr, Nb, Ti thrin or wherein the two associating content or triple combination content≤0.5, rest part is cobalt.
The preparation method of microalloying of the present invention novel high-ductility Medical Cobalt-Based Alloys material: adopt the smelting process that tradition is conventional, carbon-point adds at twice, the middle freezing treatment through 30 minutes, Trace Zr, Nb, Ti add after carbon adds completely again.After comprehensive batching is founded, casting, through solid solution or ageing treatment, the final obtained novel high-ductility Co-base alloy material of microalloying.Cobalt base alloy in this composition range is through certain temperature solid solution or ageing treatment, and the tensile break strength of room temperature is in 700 ~ 1000Mpa scope, and yield strength is in 550 ~ 750Mpa scope, and tension set is 10.0 ~ 20.0%.
The present invention compared with prior art has following beneficial effect:
In order to improve the plasticity of this alloy material, the present invention adds appropriate Zr, Nb, Ti on the basis of casting CoCrMoC alloy, develop a kind of cobalt base alloy of novel high-ductility, add the effective crystal grain thinning tissue of appropriate microalloy element, and coordinate suitable Homogenization Treatments, effectively improve the plasticity of cobalt base alloy, improve matrix strength; Adding of Zr, Nb, Ti carbide, form tiny ZrC, NbC, TiC, thinning microstructure, improve the plasticity of alloy.This cobalt base alloy adopts conventional smelting process casting, after solid solution or ageing treatment, the room temperature tensile breaking tenacity of this novel microalloying Medical Cobalt-Based Alloys is in 700 ~ 1000Mpa scope, yield strength is in 550 ~ 750Mpa scope, tension set is 10.0 ~ 20.0%, and this novel alloy meets medical requirement completely.
Mechanism of the present invention is as described below:
Adding of Zr, Nb, Ti carbide, form tiny ZrC, NbC, TiC, thinning microstructure, improve the plasticity of alloy.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
In the present embodiment, a kind of composition and mass percent of novel high-ductility Medical Cobalt-Based Alloys are as follows:
C 0.15%
Cr 28.5%
Mo 6.0%
Zr 0.25%
Co surplus
Adopt traditional conventional smelting process, when feeding intake, adopt the smelting process that tradition is conventional, add at twice at carbon, centre, through the freezing treatment of 30 minutes, adds Trace Zr after carbon is melting down.Casting, final obtained novel cobalt base alloy.As cast condition sample is through 1220 DEG C of solution treatment, and room temperature tensile breaking tenacity is greater than 700MPa, and yield strength is greater than 600MPa, and tension set is greater than 10%, and hardness is not less than 30HRC.
Embodiment 2:
In the present embodiment, a kind of composition and mass percent of novel high-ductility Medical Cobalt-Based Alloys are as follows:
C 0.25%
Cr 29.5%
Mo 6.5%
Nb 0.13%
Co surplus
Adopt traditional conventional smelting process, when feeding intake, adopt the smelting process that tradition is conventional, add at twice at carbon-point, centre, through the freezing treatment of 30 minutes, adds micro-Nb after carbon is melting down.Casting, final obtained novel cobalt base alloy.As cast condition sample is through 1220 DEG C of solution treatment, and room temperature tensile breaking tenacity is greater than 700MPa, and yield strength is greater than 600MPa, and tension set is greater than 10%, and hardness is not less than 30HRC.
Embodiment 3:
In the present embodiment, a kind of novel high-ductility Medical Cobalt-Based Alloys, composition and the weight percent of employing duplex stainless steel are as follows:
C 0.18%
Cr 27.5%
Mo 5.8%
Ti 0.15%
Co surplus
Adopt traditional conventional smelting process, when feeding intake, adopt the smelting process that tradition is conventional, add at twice at carbon, centre, through the freezing treatment of 30 minutes, adds microelement Ti after carbon is melting down.Casting, final obtained novel cobalt base alloy.As cast condition sample is after 1220 DEG C of solution treatment, and room temperature tensile breaking tenacity is greater than 700MPa, and yield strength is greater than 600MPa, and tension set is greater than 15%, and hardness is not less than 30HRC.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every do not depart from technical solution of the present invention interior perhaps above scheme is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong within scope.
Claims (1)
1. a novel high-ductility Medical Cobalt-Based Alloys, it is characterized in that: this cobalt-based has following composition and mass percent (%): C≤0.35, Cr26.0-30.0, Mo5.0-7.0,0.05≤Zr, Nb, Ti thrin or wherein the two associating content or triple combination content≤0.5, rest part is cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533616.5A CN104263999A (en) | 2014-10-11 | 2014-10-11 | Novel high-plasticity medical cobalt-based alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410533616.5A CN104263999A (en) | 2014-10-11 | 2014-10-11 | Novel high-plasticity medical cobalt-based alloy |
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| CN104263999A true CN104263999A (en) | 2015-01-07 |
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| CN201410533616.5A Pending CN104263999A (en) | 2014-10-11 | 2014-10-11 | Novel high-plasticity medical cobalt-based alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861883A (en) * | 2016-05-10 | 2016-08-17 | 上海大学兴化特种不锈钢研究院 | Novel high-plasticity antibacterial medical cobalt-based alloy material |
| WO2018040301A1 (en) * | 2016-08-29 | 2018-03-08 | 深圳市圆梦精密技术研究院 | Co-cr-mo alloy, machining method for scalpel for minimally invasive operation, and scalpel for minimally invasive operation |
| WO2023245504A1 (en) * | 2022-06-22 | 2023-12-28 | 得利钟表制品厂有限公司 | Cobalt-based alloy, wearable article and preparation method for metal product |
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2014
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| US4714468A (en) * | 1985-08-13 | 1987-12-22 | Pfizer Hospital Products Group Inc. | Prosthesis formed from dispersion strengthened cobalt-chromium-molybdenum alloy produced by gas atomization |
| WO2000047140A1 (en) * | 1999-02-10 | 2000-08-17 | Ati Properties, Inc. | Enhanced biocompatible implants and alloys |
| US20020106297A1 (en) * | 2000-12-01 | 2002-08-08 | Hitachi Metals, Ltd. | Co-base target and method of producing the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861883A (en) * | 2016-05-10 | 2016-08-17 | 上海大学兴化特种不锈钢研究院 | Novel high-plasticity antibacterial medical cobalt-based alloy material |
| WO2018040301A1 (en) * | 2016-08-29 | 2018-03-08 | 深圳市圆梦精密技术研究院 | Co-cr-mo alloy, machining method for scalpel for minimally invasive operation, and scalpel for minimally invasive operation |
| WO2023245504A1 (en) * | 2022-06-22 | 2023-12-28 | 得利钟表制品厂有限公司 | Cobalt-based alloy, wearable article and preparation method for metal product |
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