JP5295474B2 - ニオブ基合金耐熱部材 - Google Patents
ニオブ基合金耐熱部材 Download PDFInfo
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- JP5295474B2 JP5295474B2 JP2002530827A JP2002530827A JP5295474B2 JP 5295474 B2 JP5295474 B2 JP 5295474B2 JP 2002530827 A JP2002530827 A JP 2002530827A JP 2002530827 A JP2002530827 A JP 2002530827A JP 5295474 B2 JP5295474 B2 JP 5295474B2
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 78
- 239000000956 alloy Substances 0.000 title claims abstract description 78
- 239000010955 niobium Substances 0.000 title claims abstract description 45
- 229910052758 niobium Inorganic materials 0.000 title claims abstract description 36
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003779 heat-resistant material Substances 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 19
- 229910052804 chromium Inorganic materials 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 229910052721 tungsten Inorganic materials 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 52
- 239000011248 coating agent Substances 0.000 abstract description 50
- 238000009792 diffusion process Methods 0.000 abstract description 29
- 239000000758 substrate Substances 0.000 abstract description 16
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052702 rhenium Inorganic materials 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 95
- 230000003647 oxidation Effects 0.000 description 36
- 238000007254 oxidation reaction Methods 0.000 description 36
- 229910000838 Al alloy Inorganic materials 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000008859 change Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000002345 surface coating layer Substances 0.000 description 3
- 239000012720 thermal barrier coating Substances 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910001257 Nb alloy Inorganic materials 0.000 description 2
- 229910002056 binary alloy Inorganic materials 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910002058 ternary alloy Inorganic materials 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910020015 Nb W Inorganic materials 0.000 description 1
- 229910003310 Ni-Al Inorganic materials 0.000 description 1
- XZQYTGKSBZGQMO-UHFFFAOYSA-I Rhenium(V) chloride Inorganic materials Cl[Re](Cl)(Cl)(Cl)Cl XZQYTGKSBZGQMO-UHFFFAOYSA-I 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical group [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- UXMRNSHDSCDMLG-UHFFFAOYSA-J tetrachlororhenium Chemical compound Cl[Re](Cl)(Cl)Cl UXMRNSHDSCDMLG-UHFFFAOYSA-J 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
r−Al合金からなる被覆層を形成する耐酸化被覆層の製造方法が開示されている(下記特許文献2)。
Nbをベースとして少なくともMoとWのうちの1種以上を含有し、かつ必要に応じてCr,Si,Hf,Zr,Cのうちの1種以上を含有するニオブ基合金の基材表面に、一般式Re 1-a-b M a R b (式中、MはCr,Ni,Alのうちの1種以上の元素、RはNb,Mo,W,Hf,Zr,Cのうちの1種以上の元素で、a,bはそれぞれM,Rの原子比である)で表される組成を有する第一層の合金皮膜が形成され、さらにその表面に一般式Q 1-c Al c (式中、QはCr,Niのうちの1種以上の元素、cはAlの原子比である)で表される組成を有する第二層の合金皮膜が形成されてなり、前記原子比aが0.01以上、前記原子比bが0.01〜0.50、a+bが0.95以下であり、かつ前記原子比cが0.05〜0.95であるニオブ基合金の耐熱材料である。
有するとともに、第一層皮膜により元素の拡散を抑制するため、1100℃以上の高温域に長時間保持してもほとんど皮膜が変質せず、きわめて耐酸化性・耐久性に優れている。
第2図は、本発明の耐熱部材を高温大気に曝露した後の皮膜の変化を示す断面の模式図である。図に見られるように、第二層の合金皮膜3の表面に緻密な酸化物層4aが形成される。この酸化物層4aは、主にAl2 O 3 からなっており、層厚が小さくても、元素の遮断能は大きい。この状態で継続して使用した時に、第一層皮膜2は、Reを含む高温できわめて安定な相であり、拡散を抑制する効果が大きい。そのため、第二層皮膜3の分解・変質を防止することができ、最表面の酸化物層4aに亀裂・剥離が生じても、第二層皮膜3表面に再び酸化物層が形成されるため、自己修復性を有する。かくして、耐酸化被覆の耐久性が確保される。
ニオブ基合金の基材表面に、本発明に基づいて2層の耐酸化皮膜を形成した試験片と、皮膜が1層の比較用試験片について、高温酸化試験を行い耐酸化特性を評価した。
基材のニオブ基合金として、Nb−5Mo−5W−5Cr(モル%)の合金を用いた。純度99.9〜99.99%のNb,Mo,W,Cr及びSiの粉末あるいは粒状の原料を用い、所定の組成に配合した原料を、Ar雰囲気中でアーク溶解法により溶解してインゴットを作製した。この合金インゴットを1気圧のAr気流中で1700〜1800℃×24時間の均質化熱処理をし、その後30×20×2(厚さ)mmの試験片基材を切り出して、被覆処理に供した。
上記のように用意されたAl合金被覆の本発明及び比較用の試験片を、1100℃の静止大気中で等温連続加熱する高温酸化試験を行なって、耐酸化特性を比較した。本発明の試験片については、加熱時間を168時間とした。比較用試験片については外観変化が著しいので12時間とした。その結果を第3表と第4表に示す。
Claims (3)
- Nbをベースとして少なくともMoとWのうちの1種以上を含有し、かつ必要に応じてCr,Si,Hf,Zr,Cのうちの1種以上を含有するニオブ基合金の基材表面に、一般式Re1-a-bMaRb(式中、MはCr,Ni,Alのうちの1種以上の元素、RはNb,Mo,W,Hf,Zr,Cのうちの1種以上の元素で、a,bはそれぞれM,Rの原子比である)で表される組成を有する第一層の合金皮膜が形成され、さらにその表面に一般式Q1-cAlc(式中、QはCr,Niのうちの1種以上の元素、cはAlの原子比である)で表される組成を有する第二層の合金皮膜が形成されてなり、前記原子比aが0.01以上、前記原子比bが0.01〜0.50、a+bが0.95以下であり、かつ前記原子比cが0.05〜0.95であるニオブ基合金の耐熱材料。
- 前記ニオブ基合金がCrを含有する合金であり、前記第一層の合金皮膜中の元素Mが少なくともCrを含み、かつ前記第二層の合金皮膜中の元素QがCr又はCrとNiである請求項1記載のニオブ基合金の耐熱材料。
- 前記元素Mが、Crを主体としてこれに少量のAlとNiのうちの1種以上を含むものである請求項2記載のニオブ基合金の耐熱材料。
Priority Applications (1)
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JP2002530827A JP5295474B2 (ja) | 2000-09-28 | 2001-09-10 | ニオブ基合金耐熱部材 |
Applications Claiming Priority (6)
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JP2000296521 | 2000-09-28 | ||
JP2000296521 | 2000-09-28 | ||
JP2000296522 | 2000-09-28 | ||
JP2000296522 | 2000-09-28 | ||
PCT/JP2001/007828 WO2002027067A1 (fr) | 2000-09-28 | 2001-09-10 | Materiau resistant a la chaleur comprenant un alliage a base de niobium |
JP2002530827A JP5295474B2 (ja) | 2000-09-28 | 2001-09-10 | ニオブ基合金耐熱部材 |
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JP2012023563A Division JP2012132099A (ja) | 2000-09-28 | 2012-02-07 | ニオブ基合金の耐熱材料 |
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JPWO2002027067A1 JPWO2002027067A1 (ja) | 2004-02-05 |
JP5295474B2 true JP5295474B2 (ja) | 2013-09-18 |
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JP2002530827A Expired - Fee Related JP5295474B2 (ja) | 2000-09-28 | 2001-09-10 | ニオブ基合金耐熱部材 |
JP2012023563A Pending JP2012132099A (ja) | 2000-09-28 | 2012-02-07 | ニオブ基合金の耐熱材料 |
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JP (2) | JP5295474B2 (ja) |
WO (1) | WO2002027067A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7851070B2 (en) | 2004-01-15 | 2010-12-14 | National University Corporation Hokkaido University | Diffusion barrier alloy film and high-temperature apparatus member |
US8230899B2 (en) | 2010-02-05 | 2012-07-31 | Ati Properties, Inc. | Systems and methods for forming and processing alloy ingots |
US9267184B2 (en) | 2010-02-05 | 2016-02-23 | Ati Properties, Inc. | Systems and methods for processing alloy ingots |
US10207312B2 (en) | 2010-06-14 | 2019-02-19 | Ati Properties Llc | Lubrication processes for enhanced forgeability |
US8789254B2 (en) * | 2011-01-17 | 2014-07-29 | Ati Properties, Inc. | Modifying hot workability of metal alloys via surface coating |
JP5854497B2 (ja) * | 2011-07-27 | 2016-02-09 | 国立大学法人北海道大学 | Nb−Si系耐熱合金 |
US9027374B2 (en) | 2013-03-15 | 2015-05-12 | Ati Properties, Inc. | Methods to improve hot workability of metal alloys |
US9539636B2 (en) | 2013-03-15 | 2017-01-10 | Ati Properties Llc | Articles, systems, and methods for forging alloys |
US20170159155A1 (en) * | 2015-05-25 | 2017-06-08 | Mitsubishi Hitachi Power Systems, Ltd. | Nb-Silicide Based Composites, High-Temperature Component and High-Temperature Heat Engine Employing the Same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0317242A (ja) * | 1989-04-03 | 1991-01-25 | General Electric Co <Ge> | 高温ジェットエンジン用材料系 |
JP2001323332A (ja) * | 2000-03-07 | 2001-11-22 | Ebara Corp | 合金皮膜及びその形成方法、並びに高温装置部材 |
Family Cites Families (1)
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JP3073180B2 (ja) * | 1997-08-01 | 2000-08-07 | 株式会社日立製作所 | Nb合金への耐酸化表面コーティング |
-
2001
- 2001-09-10 WO PCT/JP2001/007828 patent/WO2002027067A1/ja active Application Filing
- 2001-09-10 JP JP2002530827A patent/JP5295474B2/ja not_active Expired - Fee Related
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2012
- 2012-02-07 JP JP2012023563A patent/JP2012132099A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0317242A (ja) * | 1989-04-03 | 1991-01-25 | General Electric Co <Ge> | 高温ジェットエンジン用材料系 |
JP2001323332A (ja) * | 2000-03-07 | 2001-11-22 | Ebara Corp | 合金皮膜及びその形成方法、並びに高温装置部材 |
Also Published As
Publication number | Publication date |
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WO2002027067A1 (fr) | 2002-04-04 |
JP2012132099A (ja) | 2012-07-12 |
JPWO2002027067A1 (ja) | 2004-02-05 |
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