JP2019094567A - 生物医学装置用のチタン合金を製造する方法 - Google Patents
生物医学装置用のチタン合金を製造する方法 Download PDFInfo
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Abstract
Description
所要の合金を構成する様々な金属を真空融解させることによってインゴットを調製する段階と、
インゴットの温度を上げ、十分な均質化を可能にする期間、それをその温度で保持することからなる、特に900℃を超える第一の温度でアニーリングすることによってインゴットを真空均質化する段階と、
第一のクエンチング段階と、
周囲温度における圧延、絞り、機械加工などによる機械的成形段階と、
温度を第二の所要の温度まで上げ、その温度で一定期間、保持することからなる、βトランザス温度を超える温度でのβ相における再溶解のための熱処理段階と、
第二のクエンチング段階と
を連続的に含み、前記熱処理段階が、ガス雰囲気中で実施され、また、前記ガスとの反応を通して表面処理を適用して、窒化物、炭窒化物又は酸窒化物の塗膜を表面上に均一に形成する、窒化として知られる段階を含む方法である。
プラズマ、
イオン注入法、
カソードアーク、
レーザ、
PVD又はCVD法
の技術を使用して実施することもできる。
チタン:30%〜98%
ニオブ:0%〜40%
モリブデン:0%〜15%
クロム:0%〜15%
鉄:0%〜15%
ジルコニウム:0%〜40%
ハフニウム:0%〜40%
タンタル:0%〜60%
酸素:0%〜2%
窒素:0%〜2%
ケイ素:0%〜2%
ホウ素:0%〜2%
炭素:0%〜2%
バナジウム:0%〜15%
タングステン:0%〜20%
アルミニウム:0%〜10%
スズ:0%〜10%
ガリウム:0%〜10%。
を原子%単位で含む。
Ti74Nb26
Ti72Nb20Ta10
Ti74Nb20Zr6
Ti76Nb23N
Ti78.5Nb15Zr2.5Sn4
Ti73.1Nb23Ta0.7Zr2O1.2
大部分又は最大部分として、チタン、
β安定化元素として知られる他の金属、たとえばタンタル、ニオブ、モリブデン、ジルコニウム、ハフニウム、バナジウム、鉄、クロム、タングステン、及びおそらくは
少量で加えられると超弾性を改善する傾向を示すさらに他の元素、たとえばアルミニウム、ケイ素、ホウ素、炭素、酸素、窒素、スズ、ガリウムなど
がある。
最終的な生物医学装置の機械的性質を改善し、最適化するために、より小さな結晶粒度のβ再結晶ミクロ構造を製造する目的、
オーブン中での処理中、装置を作る合金と、クエンチングオーブンに導入される気体窒素との間の直接的な熱反応を通して、装置の表面に窒化物塗膜を付着させる目的
を有する。この処理は、気相における窒化プロセスである。この窒化工程の期間は、合金の組成、所要厚さ及び装置の形状に依存して、0.5時間から10時間まで異なる。この窒化工程中に維持される温度は600〜1050℃の範囲である。
生物医学用途のための大部分の装置のように、複雑な形状を有する物体に対する場合を含め、実質的に均一な窒化物塗膜の付着、
顕著な適用しやすさ、
窒化(すなわち、窒化物の付着)が溶解中に合金の再結晶と同時に実施されること(これは、真空再結晶の後でしか実施することができない他の窒化法を使用しても不可能である)、
表面に近い内部窒化の形成による、合金に対する塗膜の非常に強い接着。
Claims (10)
- 生物医学用途のための超弾性及び/又は形状記憶性を有する、ニッケルを含まないチタン合金を製造する方法であって、
所要の前記合金を構成する様々な金属を真空融解させることによってインゴットを調製する段階と、
前記インゴットの温度を上げ、十分な均質化を可能にする期間、それをその温度で保持することからなる、特に900℃を超える第一の温度でアニーリングすることによって前記インゴットを真空均質化する段階と、
第一のクエンチング段階と、
周囲温度における圧延、絞り、機械加工などによる機械的成形段階と、
前記温度を第二の所要温度まで上げ、その温度で一定期間、保持することからなる、βトランザス温度を超える温度でのβ相における再溶解のための熱処理段階と、
第二のクエンチング段階と
を連続的に含み、前記熱処理段階が、ガス雰囲気中で実施され、また、前記ガスとの反応を通して表面処理を適用して、窒化物、炭窒化物又は酸窒化物の塗膜を表面上に均一に形成する、窒化として知られる段階を含む方法。 - 前記窒化段階を、600℃〜1050℃、好ましくは800℃〜1050℃の範囲の温度で実施する、請求項1記載の方法。
- 前記窒化段階を窒素雰囲気中で実施する、請求項1又は2記載の方法。
- 前記均質化段階の前記アニーリング温度で保持する期間が12〜20時間の範囲であり、好ましくは約16時間である、請求項1〜3のいずれか1項記載の方法。
- 前記窒化段階を再結晶段階と同時に組み合わせる、請求項1〜4のいずれか1項記載の方法。
- 前記均質化段階を900℃超の温度で実施する、請求項1〜5のいずれか1項記載の方法。
- 前記第一及び第二のクエンチングを水又は空気のいずれかで実施する、請求項1〜6のいずれか1項記載の方法。
- 請求項1〜7のいずれか1項記載の方法によって得られる合金。
- その化学組成に依存して、
チタン:30%〜98%
ニオブ:0%〜40%
モリブデン:0%〜15%
クロム:0%〜15%
鉄:0%〜15%
ジルコニウム:0%〜40%
ハフニウム:0%〜40%
タンタル:0%〜60%
酸素:0%〜2%
窒素:0%〜2%
ケイ素:0%〜2%
ホウ素:0%〜2%
炭素:0%〜2%
バナジウム:0%〜15%
タングステン:0%〜20%
アルミニウム:0%〜10%
スズ:0%〜10%
ガリウム:0%〜10%。
を原子%単位で含む、請求項8記載の合金。 - 請求項8又は9記載の合金を配合されている、又はそれでできている、生物医学用途のための装置。
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FR1160281A FR2982618B1 (fr) | 2011-11-10 | 2011-11-10 | Procede de fabrication d'un alliage a base de titane pour dispositifs biomedicaux |
FR1160281 | 2011-11-10 |
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CN (1) | CN104245975A (ja) |
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FR2982618B1 (fr) | 2011-11-10 | 2014-08-01 | Institut Nat Des Sciences Appliquees De Rennes Insa De Rennes | Procede de fabrication d'un alliage a base de titane pour dispositifs biomedicaux |
US10066282B2 (en) * | 2014-02-13 | 2018-09-04 | Titanium Metals Corporation | High-strength alpha-beta titanium alloy |
DE102014010032B4 (de) * | 2014-07-08 | 2017-03-02 | Technische Universität Braunschweig | Titanlegierung |
FR3027230B1 (fr) * | 2014-10-17 | 2016-11-04 | Univ De Lorraine | Ressort d'orthodontie helicoidal et son procede de fabrication. |
JP6005119B2 (ja) * | 2014-10-23 | 2016-10-12 | 国立大学法人東京工業大学 | 超弾性合金 |
CN104745870B (zh) * | 2015-04-14 | 2016-09-07 | 陕西爱骨医疗股份有限公司 | 一种人工关节 |
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CN105506370A (zh) * | 2015-12-15 | 2016-04-20 | 毛培 | 一种Ce、Nd增强钛合金材料 |
ITUB20160885A1 (it) * | 2016-02-19 | 2017-08-19 | Getters Spa | Catodi sinterizzati non porosi e pompe a vuoto ioniche contenenti gli stessi |
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