CN100510156C - 医用钛合金髋关节球头表面渗碳工艺 - Google Patents

医用钛合金髋关节球头表面渗碳工艺 Download PDF

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CN100510156C
CN100510156C CNB200710020889XA CN200710020889A CN100510156C CN 100510156 C CN100510156 C CN 100510156C CN B200710020889X A CNB200710020889X A CN B200710020889XA CN 200710020889 A CN200710020889 A CN 200710020889A CN 100510156 C CN100510156 C CN 100510156C
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titanium alloy
hip joint
medical titanium
joint bulb
medical
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CN101033535A (zh
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葛世荣
罗勇
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China University of Mining and Technology CUMT
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Priority to EP08007050.1A priority patent/EP1980640B1/en
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/28—Materials for coating prostheses
    • A61L27/30—Inorganic materials
    • A61L27/303—Carbon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding

Abstract

一种医用钛合金髋关节球头表面渗碳工艺，对医用钛合金TC4进行表面渗碳处理，选用乙炔作为渗碳剂，在高温下进行气体渗碳，得到表面形成TiC陶瓷的医用钛合金TC4髋关节球头，该关节球头表面的TiC陶瓷层较厚，达100微米以上，克服了目前医用钛合金材料存在的缺陷，特别适用于人体髋关节或膝关节的置换。其磨损量低，生物相容性好，耐腐蚀性能高，制备方法简单，成本低，在本技术领域内具有广泛的实用性。

Description

医用钛合金髋关节球头表面渗碳工艺
技术领域
本发明涉及钛合金髋关节球头的表面渗碳工艺，尤其是制备低磨损钛合金髋关节球头，用于人体髋关节或膝关节的置换。
背景技术
自从20世纪60年代Branemark将钛合金用做口腔种植体后，钛合金便结束了单一作为航天材料的历史，开始在生物医用材料领域得到广泛的发展和应用。目前在矫形外科领域应用最为广泛的是Ti6Al4V合金，又称TC4钛合金，具有很高的耐蚀性、很好的生物相容性、较高的机械强度和较好的加工性能，因此被广泛用作外科修复材料。但是，研究发现Ti6Al4V合金存在塑性剪切抗力低和加工硬化性能不好，不足以抵抗由机械性能所影响的摩擦磨损现象，并且表面的氧化膜TiO2易于剥落，对亚表层得不到很好的保护作用。虽然在正常条件下，钛合金的表面会生成一种十分稳定而连续的、结合牢固的氧化物钝化膜，因此通常具有良好的耐蚀性能，但由于人体环境的复杂性，在外力和体液的侵蚀下，表面钝化膜有可能被剥离、溶解，因此，在使用过程中仍会有物质释放到组织中。另外，钛合金的摩擦系数大，因此导致合金的耐磨性非常之差，这使得其植入组织因磨损而产生大量的Ti，Al和V黑色碎屑，这些磨屑可以引起无菌松动，最终导致关节置换失败。
为了提高医用钛合金的各种性能，可采用各种表面处理的方法对钛合金进行表面改性，从而使其更适合于医学应用的要求。对钛合金进行表面改性，既保持了钛合金作为基体材料的一系列品质，又使得钛合金的综合性能获得大幅度的改善，因此，近年来成为医用钛合金领域的研究热点。随着离子注入、等离子喷涂、化学镀、离子镀、PVD、CVD、微弧氧化、激光熔敷等技术的发展，可以在钛合金表面形成耐磨、耐蚀的TiN、TiC、DLC、TiO2等陶瓷涂层，提高表面的耐磨性和耐腐蚀性，也可以在表面形成HA、BG等生物活性涂层，且也可以防止钛合金中的V、Al离子在生理环境中的释放，进一步提高材料的生物相容性。因此，研究钛合金的表面改性技术，制备具有耐磨、耐蚀性能的金属陶瓷，并研究其在生理环境下的生物摩擦学性能，对于发展高性能的人工关节、提高钛合金人工关节的使用寿命、揭示其润滑机理、进一步提高人工关节置换的稳定性和可靠性具有重要意义。
发明内容
本发明的目的是针对已有技术中的不足之处，提供一种医用钛合金髋关节球头表面渗碳工艺，以提高医用钛合金髋关节球的耐磨性和使用寿命。
本发明医用钛合金髋关节球头表面渗碳工艺：
a.首先将医用钛合金TC4髋关节球头置于丙酮溶液中，采用超声波清洗30分钟；
b.将医用钛合金TC4髋关节球头放入真空渗碳炉中，抽真空到100Pa，然后加热到1300℃，并恒温；
c.通入C2H2使炉腔内的气压达到2000Pa，然后停止通入C2H2；
d.抽真空，将C2H2分解后的气体排出；
e.每隔30分钟重复c.d步骤，连续4次后停止加热，继续抽真空；
f.待炉腔内温度冷却至25℃时停止抽真空，取出医用钛合金TC4髋关节球头；
g.进行表面抛光，即得到表面形成TiC陶瓷的医用钛合金TC4髋关节球头。
有益效果：本发明医用钛合金髋关节球头表面渗碳工艺，对医用钛合金TC4进行表面渗碳处理，选用乙炔作为渗碳剂，在高温下进行气体渗碳，得到表面形成TiC陶瓷的医用钛合金TC4髋关节球头，该关节球头表面的TiC陶瓷层较厚，达100微米以上，克服了目前医用钛合金材料存在的缺陷。其磨损量低，生物相容性好，耐腐蚀性能高，制备方法简单，成本低，在本技术领域内具有广泛的实用性。
具体实施方式
实施例：选用医用钛合金TC4，将钛合金机械加工成适用于人体髋关节部位的各种大小直径的髋关节球头，用丙酮在超声波中清洗30分钟后放入高温渗碳炉中，抽真空到100Pa，然后加热到1300摄氏度并恒温；此时迅速通入C2H2使炉腔内的气压达到2000Pa，然后停止通入C2H2，然后开始抽真空，将C2H2分解后的气体排出。每隔30分钟重复上述过程，在保温2小时(即通气4次后)停止加热，待温度冷却到室温时停止抽真空，并取出钛合金髋关节球头。最后，将钛合金髋关节球头表面抛光，经医学消毒即可用于临床。

Claims (1)

1.医用钛合金髋关节球头表面渗碳工艺，其特征在于：
a.首先将医用钛合金TC4髋关节球头置于丙酮溶液中，采用超声波清洗30分钟；
b.将医用钛合金TC4髋关节球头放入真空渗碳炉中，抽真空到100Pa，然后加热到1300℃，并恒温；
c.通入C2H2使炉腔内的气压达到2000Pa，然后停止通入C2H2；
d.抽真空，将C2H2分解后的气体排出；
e.每隔30分钟重复上述步骤。和d，连续4次后停止加热，继续抽真空；
f.待炉腔内温度冷却至25℃时停止抽真空，取出医用钛合金TC4髋关节球头；
g.进行表面抛光，即得到表面形成TiC陶瓷的医用钛合金TC4髋关节球头。
CNB200710020889XA 2007-04-10 2007-04-10 医用钛合金髋关节球头表面渗碳工艺 Expired - Fee Related CN100510156C (zh)

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CNB200710020889XA CN100510156C (zh) 2007-04-10 2007-04-10 医用钛合金髋关节球头表面渗碳工艺
EP08007050.1A EP1980640B1 (en) 2007-04-10 2008-04-09 Surface carburization technique of medical titanium alloy femoral head in total hip arthroplasty
US12/101,024 US7918944B2 (en) 2007-04-10 2008-04-10 Surface carburization technique of medical titanium alloy femoral head in hip arthroplasty

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CNB200710020889XA CN100510156C (zh) 2007-04-10 2007-04-10 医用钛合金髋关节球头表面渗碳工艺

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CN102560329A (zh) * 2011-12-23 2012-07-11 中国矿业大学 医用钛合金人工关节柄表面微孔陶瓷制备工艺
CN102626525A (zh) * 2012-03-27 2012-08-08 广州有色金属研究院 一种人工髋关节摩擦副表面膜层及其制备方法
CN104546226A (zh) * 2013-10-11 2015-04-29 浙江一火科技有限公司 一种人工髋关节及其制备方法
CN104328376B (zh) * 2014-10-15 2016-08-17 中国矿业大学 医用钛合金高温固体渗碳工艺
CN109047775B (zh) * 2018-08-23 2021-06-11 中南钻石有限公司 一种镀碳化钛金刚石及其生产工艺
US20210196855A1 (en) * 2019-09-10 2021-07-01 Adamas Nanotechnologies, Inc. Compositions and uses of nanoscale diamond particles for artificial joint
CN113695496B (zh) * 2021-08-31 2023-07-18 西安赛福斯材料防护有限责任公司 一种大口径防氢脆钛合金弹簧的制备方法
CN114107881B (zh) * 2021-11-15 2023-07-25 湖南弘辉科技有限公司 一种高速风机叶片加工工艺

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US20080257455A1 (en) 2008-10-23
EP1980640A2 (en) 2008-10-15

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