JP2010502842A - 希土類元素を含むニッケル−チタン合金 - Google Patents
希土類元素を含むニッケル−チタン合金 Download PDFInfo
- Publication number
- JP2010502842A JP2010502842A JP2009527406A JP2009527406A JP2010502842A JP 2010502842 A JP2010502842 A JP 2010502842A JP 2009527406 A JP2009527406 A JP 2009527406A JP 2009527406 A JP2009527406 A JP 2009527406A JP 2010502842 A JP2010502842 A JP 2010502842A
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- JP
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- Prior art keywords
- nickel
- titanium alloy
- titanium
- rare earth
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910001000 nickel titanium Inorganic materials 0.000 title claims abstract description 319
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 178
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 213
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 114
- 239000010936 titanium Substances 0.000 claims abstract description 104
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 97
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000005275 alloying Methods 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 46
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 45
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 40
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 37
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 36
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 35
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 35
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 35
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 35
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 35
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 35
- 229910052775 Thulium Inorganic materials 0.000 claims abstract description 35
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 35
- 229910052774 Proactinium Inorganic materials 0.000 claims abstract description 30
- 229910052770 Uranium Inorganic materials 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229910001566 austenite Inorganic materials 0.000 claims description 53
- 230000005855 radiation Effects 0.000 claims description 53
- 229910052776 Thorium Inorganic materials 0.000 claims description 29
- 239000007787 solid Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- 229910052763 palladium Inorganic materials 0.000 claims description 22
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 230000036760 body temperature Effects 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 10
- 229910052789 astatine Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005482 strain hardening Methods 0.000 claims description 7
- 229910052767 actinium Inorganic materials 0.000 claims description 5
- 230000006399 behavior Effects 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 description 165
- 239000000956 alloy Substances 0.000 description 165
- 230000009466 transformation Effects 0.000 description 52
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 48
- 239000000463 material Substances 0.000 description 44
- 229910000691 Re alloy Inorganic materials 0.000 description 42
- 150000002910 rare earth metals Chemical class 0.000 description 41
- 229910000734 martensite Inorganic materials 0.000 description 38
- 238000010521 absorption reaction Methods 0.000 description 34
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 30
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 26
- 239000000203 mixture Substances 0.000 description 26
- 239000010949 copper Substances 0.000 description 22
- 229910052802 copper Inorganic materials 0.000 description 20
- 229910052697 platinum Inorganic materials 0.000 description 20
- 238000001914 filtration Methods 0.000 description 18
- 239000011651 chromium Substances 0.000 description 16
- 229910052737 gold Inorganic materials 0.000 description 15
- 239000010931 gold Substances 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052721 tungsten Inorganic materials 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 13
- 230000001186 cumulative effect Effects 0.000 description 13
- 239000010410 layer Substances 0.000 description 13
- 229910052723 transition metal Inorganic materials 0.000 description 13
- 150000003624 transition metals Chemical class 0.000 description 13
- 238000003384 imaging method Methods 0.000 description 12
- 239000003550 marker Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 229910052684 Cerium Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 11
- 229910052758 niobium Inorganic materials 0.000 description 11
- 229910052762 osmium Inorganic materials 0.000 description 11
- 229910052702 rhenium Inorganic materials 0.000 description 11
- 229910052703 rhodium Inorganic materials 0.000 description 11
- 238000011282 treatment Methods 0.000 description 11
- 229910052726 zirconium Inorganic materials 0.000 description 11
- 229910052741 iridium Inorganic materials 0.000 description 10
- 229910052750 molybdenum Inorganic materials 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 9
- 229910052765 Lutetium Inorganic materials 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 229910001069 Ti alloy Inorganic materials 0.000 description 6
- 229910052787 antimony Inorganic materials 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 229910052793 cadmium Inorganic materials 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 229940079593 drug Drugs 0.000 description 6
- 229910052733 gallium Inorganic materials 0.000 description 6
- 229910052732 germanium Inorganic materials 0.000 description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- 229910052745 lead Inorganic materials 0.000 description 6
- 229910052748 manganese Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 229910052713 technetium Inorganic materials 0.000 description 6
- 229910052718 tin Inorganic materials 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 229910003086 Ti–Pt Inorganic materials 0.000 description 5
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- 229910010977 Ti—Pd Inorganic materials 0.000 description 4
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
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- 238000006467 substitution reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001371 Er alloy Inorganic materials 0.000 description 2
- 229910000748 Gd alloy Inorganic materials 0.000 description 2
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- 210000001015 abdomen Anatomy 0.000 description 2
- 229910052768 actinide Inorganic materials 0.000 description 2
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- 230000000996 additive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
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- 229910052686 Californium Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 1
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Classifications
-
- 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
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
- A61F2/885—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- 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
-
- 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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
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Abstract
Description
本特許文献は、米国特許法第119条(e)項(35 U.S.C.§119(e))に基づき2006年9月6日に出願された米国仮特許出願第60/842,484号、2006年11月29日に出願された米国仮特許出願第60/872,369号、および2006年11月29日に出願された米国仮特許出願第60/872,370号の出願日の恩典を主張し、これらは参照として本明細書に援用される。
以下の明細書および添付の特許請求の範囲において使用される場合、以下の用語は以下の意味を有する。
表1 好ましい合金組成(at.%)
表2 ErおよびCrを含む好ましい合金組成(at.%)
表3 Ni−Ti−RE合金中の代表的な相
表4 線吸収係数計算のパラメーター
Aalloy=pANi+qATi+rARE
上式中
μc alloy
を計算した。種々のX線管電圧および異なる濾過レベルにおけるW/ReアノードのX線強度分布を使用して、フォトンの確率分布を計算した。前述のようにして求めたμalloyの値を特定のエネルギーにおけるそれぞれのフォトンの確率で乗じ、次にそれらの値を全エネルギースペクトルにわたって合計することによって、種々のX線管電圧および異なる濾過レベルにおける累積線吸収係数μc alloyを求めた。得られた値のμc alloyすなわち放射線不透過性を、種々のNi−Ti−RE合金組成物について原子パーセント(at.%)、管電圧、および濾過方式に関して図5〜8にグラフの形態で示している。計算データは、比較のためNi−Ti−Pt、Ni−Ti−Pd、およびNi−Ti−Wの合金についても示している。
真空誘導溶解(VIM)を使用して数種類の希土類ドープニッケル−チタン合金のインゴットを作製した。具体的には、それぞれ7.5at.%の希土類元素を含有するNi−Ti−Er、Ni−Ti−La、Ni−Ti−Gd、およびNi−Ti−Ndを溶解させた。比較のため、Ni−Ti−7.5at.%Ptインゴットおよび二元ニッケル−チタン合金もVIMによって作製した。直径5.72センチメートル(2.25インチ)および高さ7.62センチメートル(3インチ)のインゴットを圧延して板を形成した。それぞれのNi−Ti−X板は、圧延の結果としていくつかの樹枝状晶間亀裂が示されたが、Erドープニッケル−チタン合金が最も圧延に耐えられるように思われた。圧延した板は、850℃で24時間均熱した後、高さが2.54cm(1インチ)をわずかに超える大きさまで熱間加工した。各試験体の組成を重量パーセントの単位で表5に示している。炭素、酸素、および窒素の不純物の濃度も百万分率(ppm)の単位で示している。
表5 Ni−TiおよびNi−Ti−X(X=Er、La、Gd、Nd、またはPt)の試験体の組成データ
表6 鋳造し研磨した試験体のブリネル(Brinell)硬度データ
表7 相対X線コントラスト値(蛍光透視モード)
表8 相対X線コントラスト値(静止モード)
以下の表9に示す組成を有する12のさらなる合金を溶融させる。溶融および鋳造の後、合金は、1000℃で72時間の均一化熱処理を行うことができる。均一化された合金は次に、前述のように試験体に機械加工することができる。
表9 Ni−Ti−ErおよびNi−Tt−Ef−X(X=PdまたはCr)の試験体の組織データ
Claims (20)
- 約34at.%(原子百分率)〜約60at.%の濃度のニッケルと、
約34at.%〜約60at.%の濃度のチタンと、
約0.1at.%〜約15at.%の濃度の少なくとも1種類の希土類元素とを含み、
前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される、ニッケル−チタン合金。 - 前記希土類元素の濃度が約2.5at.%〜約7.5at.%である、請求項1に記載のニッケル−チタン合金。
- 最高約14.9at.%の濃度の少なくとも1種類の追加の合金化元素をさらに含む、請求項1に記載のニッケル−チタン合金。
- 前記追加の合金化元素の濃度が約4.9at.%以下であり、前記追加の合金化元素がCr、Co、Fe、およびPdからなる群から選択される、請求項3に記載のニッケル−チタン合金。
- 等原子比近傍の二元ニッケル−チタン合金の放射線不透過性よりも高い放射線不透過性を有する、請求項1に記載のニッケル−チタン合金。
- 15keV〜150keVの範囲内のエネルギーを有する放射線を照射した場合、前記ニッケル−チタン合金の放射線不透過性が、等原子比近傍の二元ニッケル−チタン合金の放射線不透過性の約1〜約8倍の範囲内である、請求項5に記載のニッケル−チタン合金。
- 40keV〜110keVの範囲内のエネルギーを有する放射線を照射した場合、前記ニッケル−チタン合金のX線コントラストが、等原子比近傍の二元ニッケル−チタン合金のX線コントラストの1〜約2倍の範囲内となる、請求項1に記載のニッケル−チタン合金。
- 超弾性であり約37℃以下のオーステナイト仕上温度を有する、請求項1に記載のニッケル−チタン合金。
- 体温以下で変形応力を除去した場合に少なくとも約0.5%の回復性ひずみを含む、請求項1に記載のニッケル−チタン合金。
- 等原子比近傍の二元ニッケル−チタン合金の放射線不透過性よりも高い放射線不透過性を有し、前記希土類元素の濃度が約2.5at.%〜約7.5at.%であり、約4.9at.%以下の濃度の少なくとも1種類の追加の合金化元素をさらに含み、前記追加の合金化元素が、Cr、Co、Fe、およびPdからなる群から選択され、超弾性であり、37℃以下のオーステナイト仕上温度を有する、請求項1に記載のニッケル−チタン合金。
- 約34at.%〜約60at.%の濃度のニッケルと、約34at.%〜約60at.%の濃度のチタンと、約0.1at.%〜約15at.%の濃度の少なくとも1種類の希土類元素とを含み、前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される、ニッケル−チタン合金を含む少なくとも1つの構成要素を含む医療機器。
- 前記構成要素がワイヤーおよびカニューレの少なくとも1つを含む、請求項11に記載の医療機器。
- 前記少なくとも1種類の希土類元素の濃度が約2.5at.%〜約7.5at.%であり、前記ニッケル−チタン合金が等原子比近傍の二元ニッケル−チタン合金の放射線不透過性よりも高い放射線不透過性を有する、請求項11に記載の医療機器。
- 前記ニッケル−チタン合金が、超弾性であり約37℃以下のオーステナイト仕上温度を有する、請求項11に記載の医療機器。
- 約34at.%〜約60at.%の濃度のニッケルと、約34at.%〜約60at.%の濃度のチタンと、約0.1at.%〜約15at.%の濃度の少なくとも1種類の希土類元素とを含み、前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される、ニッケル−チタン合金を含む少なくとも1つの構成要素を含む放射線不透過性医療機器であって、それによって、前記ニッケル−チタン合金が、等原子比近傍の二元ニッケル−チタン合金の放射線不透過性よりも高い放射線不透過性を有し、それによって前記ニッケル−チタン合金が、体温以下で変形応力を除去した場合に少なくとも約0.5%の回復性ひずみをさらに含む、放射線不透過性医療機器。
- 前記ニッケル−チタン合金が、超弾性であり約37℃以下のオーステナイト仕上温度を有する、請求項15に記載の放射線不透過性医療機器。
- 前記回復性ひずみが約2%〜約10%の範囲内である、請求項15に記載の放射線不透過性医療機器。
- 少なくとも1つの構成要素を含む医療機器の製造方法であって、
約34at.%〜約60at.%のニッケルと、約34at.%〜約60at.%のチタンと、約0.1at.%〜約15at.%の少なくとも1種類の希土類元素とを含み、前記少なくとも1種類の希土類元素が、La、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Ac、Th、Pa、およびUからなる群から選択される溶融物を形成するステップと、
前記溶融物を冷却して固体を形成するステップと、
前記固体から構成要素を形成し、それによって前記構成要素を含む医療機器を形成するステップとを含む、方法。 - 前記固体から前記構成要素を形成するステップが、
前記固体を第1の形状に熱間加工するステップと、
前記第1の形状を前記構成要素に冷間加工するステップと、
前記構成要素の焼きなましを行うステップとを含み、前記構成要素の焼きなましを行うステップが、前記構成要素を最終形状に束縛し、前記構成要素を約350℃〜約550℃の範囲内の温度で加熱するステップを含む、請求項18に記載の方法。 - 少なくとも約1,000℃の温度で前記固体を固溶化熱処理するステップをさらに含む、請求項18に記載の方法。
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US87237006P | 2006-11-29 | 2006-11-29 | |
US60/872,369 | 2006-11-29 | ||
US60/872,370 | 2006-11-29 | ||
PCT/US2007/019445 WO2008030517A1 (en) | 2006-09-06 | 2007-09-06 | Nickel-titanium alloy including a rare earth element |
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KR20200102178A (ko) * | 2019-02-21 | 2020-08-31 | 서울대학교산학협력단 | 나노구조 형상기억 합금 및 그 제조방법 |
KR102159780B1 (ko) | 2019-02-21 | 2020-09-24 | 서울대학교 산학협력단 | 나노구조 형상기억 합금 및 그 제조방법 |
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US9873933B2 (en) | 2018-01-23 |
US20150232975A1 (en) | 2015-08-20 |
AU2007293025A1 (en) | 2008-03-13 |
DE602007010642D1 (de) | 2010-12-30 |
JP5748955B2 (ja) | 2015-07-15 |
CA2658580C (en) | 2016-11-22 |
EP2059619A1 (en) | 2009-05-20 |
DK2059619T3 (da) | 2011-02-21 |
US9103006B2 (en) | 2015-08-11 |
EP2059619B1 (en) | 2010-11-17 |
US20080053577A1 (en) | 2008-03-06 |
ATE488611T1 (de) | 2010-12-15 |
CA2658580A1 (en) | 2008-03-13 |
WO2008030517A1 (en) | 2008-03-13 |
AU2007293025B2 (en) | 2011-06-30 |
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