JP4749467B2 - 部品に対する断熱層と金属浸食防護層とを備えた被覆系と、その被覆系の製造方法と、蒸気タービンの運転方法 - Google Patents
部品に対する断熱層と金属浸食防護層とを備えた被覆系と、その被覆系の製造方法と、蒸気タービンの運転方法 Download PDFInfo
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- JP4749467B2 JP4749467B2 JP2008515158A JP2008515158A JP4749467B2 JP 4749467 B2 JP4749467 B2 JP 4749467B2 JP 2008515158 A JP2008515158 A JP 2008515158A JP 2008515158 A JP2008515158 A JP 2008515158A JP 4749467 B2 JP4749467 B2 JP 4749467B2
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- coating layer
- layer system
- erosion protection
- steam turbine
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F01D5/288—Protective coatings for blades
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- 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
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12611—Oxide-containing component
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Description
1.浸食防護層13の熱的噴射(溶射)時にできるだけ小さな粒度を有する吹付 け粒子の利用。
2.吹付け後における外側浸食防護層13の放射過程例えばガラス球ショットブ ラストやスチールショットブラストによる緻密化あるいは他の機械式圧縮法 や平滑法(ローリング、スライド研摩)による緻密化。
3.溶込み材による開放された孔の閉じ込め。
4.被覆系全体の熱処理。
5.最上側層あるいは金属浸食防護層全体の融解あるいは再融解。
4 基板
7 断熱層
10 結合層
13 浸食防護層
31 弁ハウジング部分
300 蒸気タービン
303 蒸気タービン
333 蒸気入口室
334 外部車室
335 内部車室
342 翼列
354 翼列
366 翼列部
Claims (29)
- 少なくとも基板(4)と、金属結合層(10)と、金属結合層(10)上の断熱層(17)、特にセラミック断熱層(7)と、断熱層(7)上の外側金属浸食防護層(13)とから成る特に蒸気タービン(300、303)における部品(1、31、334、335、342、354、357、366)の被覆層系において、
前記結合層(10)の材料が、29〜31重量%ニッケルと、27〜29重量%クロムと、7〜8重量%アルミニウムと、0.5〜0.7重量%イットリウムと、0.3〜0.7重量%けい素と、残りコバルトとから成っているか、
11〜13重量%コバルトと、20〜22重量%クロムと、10.5〜11.5重量%アルミニウムと、0.3〜0.5重量%イットリウムと、1.5〜2.5重量%レニウムと、残りニッケルとから成っているか、
24〜26重量%コバルトと、16〜18重量%クロムと、9.5〜11重量%アルミニウムと、0.3〜0.5重量%イットリウムと、1.0〜1.8重量%レニウムと、残りニッケルとから成っているか、
11.5〜20重量%クロムと、0.3〜1.5重量%けい素と、0〜1重量%アルミニウムと、0〜4重量%イットリウムと、残り鉄とから成っているか、あるいは、
12.5〜14重量%クロムと、0.5〜1.0重量%けい素と、0.1〜0.5重量%アルミニウムと、0〜4重量%イットリウムと、残り鉄とから成っており、
前記結合層(10)および浸食防護層(13)が、同一あるいは類似の組成を有していることを特徴とする部品の被覆層系。 - 結合層(10)および浸食防護層(13)の材料がMCrAlX合金であることを特徴とする請求項1に記載の被覆層系。
- 浸食防護層(13)および結合層(10)が、鉄基、ニッケル基、クロム基あるいはコバルト基の合金から成っていることを特徴とする請求項1又は2に記載の被覆層系。
- 浸食防護層(13)および結合層(10)が、けい素(Si)および/又はほう素(B)を混入したニッケル・クロム合金(NiCrSiB)から成っていることを特徴とする請求項1に記載の被覆層系。
- 浸食防護層(13)および結合層(10)が、ニッケル・アルミニウム合金から成っていることを特徴とする請求項1に記載の被覆層系。
- 結合層(10)および浸食防護層(13)が、同一の組成を有していることを特徴とする請求項1ないし5のいずれか1つに記載の被覆層系。
- 浸食防護層(13)が断熱層(7)より小さな多孔性を有していることを特徴とする請求項1に記載の被覆層系。
- 浸食防護層(13)が、浸食防護層(13)の理論密度の少なくとも96%の密度を有していることを特徴とする請求項1又は7に記載の被覆層系。
- 断熱層(7)の密度が浸食防護層(13)の理論密度の80%〜95%であることを特徴とする請求項1、7、8のいずれか1つに記載の被覆層系。
- 断熱層(7)が少なくとも部分的に多孔性を有していることを特徴とする請求項1、7、9のいずれか1つに記載の被覆層系。
- 断熱層(7)が多孔性に勾配を有していることを特徴とする請求項7、9、10のいずれか1つに記載の被覆層系。
- 断熱層(7)の多孔性が、断熱層(7)の外側部位において最も大きいことを特徴とする請求項11に記載の被覆層系。
- 断熱層(7)の多孔性が、断熱層(7)の外側部位において最も小さいことを特徴とする請求項11に記載の被覆層系。
- 金属浸食防護層(13)の材料が高い延性を有していることを特徴とする請求項1、2、3、4、5のいずれか1つに記載の被覆層系。
- 被覆層系(1)がガスタービンあるいは蒸気タービン(300、303)の車室部品(31、334、335、366)であることを特徴とする請求項1に記載の被覆層系。
- 被覆層系(1)がタービン車室(366)あるいは弁ハウジング(31)であることを特徴とする請求項15に記載の被覆層系。
- 被覆層系(1)がタービン翼(342、354、357)であることを特徴とする請求項1に記載の被覆層系。
- 浸食防護層(13)が部品(1)上において、部品(1)への浸食小片の衝突角が60°〜120°である場所だけに存在していることを特徴とする請求項1、14、15、16、17のいずれか1つに記載の被覆層系。
- 被覆層系(1)が基板(4)から成り、該基板(4)上に断熱層(7)が存在し、前記基板(4)がニッケル基、コバルト基あるいは特に鉄基の合金で形成されていることを特徴とする請求項1、15ないし18のいずれか1つに記載の被覆層系。
- 断熱層(7)が、少なくとも部分的に、酸化ジルコニウム(Zr02)から成っていることを特徴とする請求項1、7、9、19のいずれか1つに記載の被覆層系。
- 断熱層(7)が、少なくとも部分的に、酸化チタン(Ti02)から成っていることを特徴とする請求項1、7、9、19、20のいずれか1つに記載の被覆層系。
- 被覆層系(1)が、蒸気タービン(300、303)の入口室(333)および翼列部(366)に設けられていることを特徴とする請求項1に記載の被覆層系。
- 被覆層系(1)が、蒸気タービン(300、303)の入口室(333)だけに設けられていることを特徴とする請求項1に記載の被覆層系。
- 被覆層系(1)が、蒸気タービン(300、303)の翼列部(366)だけに設けられていることを特徴とする請求項1に記載の被覆層系。
- 再加工された部品(1)において、結合層(10)と断熱層(17)と浸食防護層(13)が設けられていることを特徴とする請求項1に記載の被覆層系。
- 浸食防護層(13)が断熱層(17)上への設置後に緻密化されていることを特徴とする請求項1ないし25のいずれか1つに記載の部品の製造方法。
- 蒸気タービン(300、303)の内側表面に衝突する浸食小片と共に蒸気が、蒸気タービン(300、303)内を流れる、蒸気タービン(300、303)の運転方法において、
浸食小片が60°〜120°の角度で衝突する蒸気タービン(300、303)の少なくとも内側表面に、請求項1ないし25のいずれか1つに記載の被覆層系(1)が設けられていることを特徴とする蒸気タービンの運転方法。 - 浸食小片が80°〜100°の角度で衝突する蒸気タービン(300、303)の内側表面に、請求項1ないし25のいずれか1つに記載の被覆層系(1)が設けられていることを特徴とする請求項27に記載の方法。
- 浸食小片が80°〜100°の角度で衝突する蒸気タービン(300、303)の内側表面だけに、請求項1ないし25のいずれか1つに記載の被覆層系(1)が設けられていることを特徴とする請求項27又は28に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05012633A EP1734145A1 (de) | 2005-06-13 | 2005-06-13 | Schichtsystem für ein Bauteil mit Wärmedämmschicht und metallischer Erosionsschutzschicht, Verfahren zur Herstellung und Verfahren zum Betreiben einer Dampfturbine |
EP05012633.3 | 2005-06-13 | ||
PCT/EP2006/060835 WO2006133980A1 (de) | 2005-06-13 | 2006-03-17 | Schichtsystem für ein bauteil mit wärmedämmschicht und metallischer erosionsschutzschicht, verfahren zur herstellung und verfahren zum betreiben einer dampfturbine |
Publications (2)
Publication Number | Publication Date |
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JP2008544127A JP2008544127A (ja) | 2008-12-04 |
JP4749467B2 true JP4749467B2 (ja) | 2011-08-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2008515158A Expired - Fee Related JP4749467B2 (ja) | 2005-06-13 | 2006-03-17 | 部品に対する断熱層と金属浸食防護層とを備えた被覆系と、その被覆系の製造方法と、蒸気タービンの運転方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8047775B2 (ja) |
EP (2) | EP1734145A1 (ja) |
JP (1) | JP4749467B2 (ja) |
CN (1) | CN101198713B (ja) |
WO (1) | WO2006133980A1 (ja) |
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JP2006144061A (ja) * | 2004-11-18 | 2006-06-08 | Toshiba Corp | 遮熱コーティング部材およびその形成方法 |
Also Published As
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US8047775B2 (en) | 2011-11-01 |
EP1734145A1 (de) | 2006-12-20 |
WO2006133980A1 (de) | 2006-12-21 |
CN101198713B (zh) | 2010-08-18 |
US20090053069A1 (en) | 2009-02-26 |
JP2008544127A (ja) | 2008-12-04 |
EP1891249A1 (de) | 2008-02-27 |
CN101198713A (zh) | 2008-06-11 |
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