CN116615573A - 具有先进界面的双层热屏障涂层 - Google Patents
具有先进界面的双层热屏障涂层 Download PDFInfo
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- 239000012720 thermal barrier coating Substances 0.000 title description 6
- 238000000576 coating method Methods 0.000 claims abstract description 55
- 239000011248 coating agent Substances 0.000 claims abstract description 51
- 238000005524 ceramic coating Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 12
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229910002078 fully stabilized zirconia Inorganic materials 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000601 superalloy Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
通过调节涂覆参数(例如粉末的尺寸)以及改变喷洒系统的参数改善了陶瓷涂层系统(16)的结合能力。
Description
本发明涉及具有显示出两层陶瓷涂层系统的陶瓷涂层系统的组件。
不断升高的涡轮入口温度(TIT)导致引入先进的热阻屏障层(TBC)，所述先进的热屏障涂层(TBC)通常呈现为多层陶瓷系统。这些TBC通常包括部分高断裂韧性的部分稳定氧化锆下涂层以及一个或多个较低断裂的陶瓷上涂层。
非常典型的陶瓷涂层为全稳定氧化锆热屏障涂层，其通常在高温下表现出低的断裂韧性、耐烧结性和相稳定性。
然而，全稳定涂层的特征在于断裂韧性低，并因此耐侵蚀性低，并且沉积在部分稳定氧化锆涂层的顶部上，通过陶瓷-陶瓷界面结合，所述陶瓷-陶瓷界面可能相当弱并且可能导致上涂层的完全分层，对下面组件的热保护具有不利影响。
然而，多层热保护陶瓷涂层的引入带来两个问题：
i)全稳定陶瓷上涂层相关的低断裂韧性，这不利地影响其耐侵蚀性。
ii)陶瓷下涂层与陶瓷上涂层之间的固有弱界面。
关于陶瓷涂层系统的耐侵蚀性，解决方案是沉积两个陶瓷涂层，部分稳定下涂层和全稳定上涂层，尤其具有分段的显微组织。
分段的显微组织的特征在于孔隙率低(<3％)和沿涂层厚度行进的竖直裂纹，使其表现出热适应性，这意味着陶瓷涂层显示出提高的吸收和承受热应变的能力。通常，竖直裂纹将从下涂层延伸并延续到上涂层。致密的分段的显微组织可以使陶瓷涂层的耐侵蚀性提高至少三倍。
关于两个分段的陶瓷涂层的结合能力，影响其最重要的因素是表面粗糙度和温度控制。
关于粗糙度，分段的下涂层通常相当光滑，并且很少或几乎没有可以有助于机械互锁的凹凸或腔。这可能影响两个陶瓷涂层之间结合的稳健性和强度。
关于温度，理想地，当将上稳定涂层沉积在经强烈预热的下涂层上时，将出现牢固的界面。高温将有助于引入的全稳定颗粒在部分稳定下涂层上的润湿和铺展。颗粒将均匀铺展并填充几乎所有的腔和凹凸不平，从而以这种方式改善两个涂层之间的机械互锁。
然而，对于具有复杂几何形状和不同金属壁厚度的大体积组件的均匀预热可能具有挑战性。
因此本发明的目的是改善以上列出的问题。
该问题通过根据权利要求1所述的组件来解决。
在从属权利要求中列出了另外的优点，这些优点可以彼此任意组合以产生另外的优点。
附图示出了本发明的组件的陶瓷涂层系统。
涂层通常通过使喷枪在同一表面上经过数次通过以层的形式施加粉末来施加。
本发明改善了两个陶瓷涂层之间的界面互锁和结合的强度和稳健性。其方式是通过在不牺牲其显微组织的情况下在陶瓷下涂层上实现更高的粗糙度。
这可以如下实现：
通常，通过使用较细的颗粒粉末，尤其使用氧熔剂切割(powder cut)来喷洒陶瓷下涂层10，以实现最大的熔融程度，这进而降低孔隙率并且促进竖直裂纹行为。涂层的表面光滑的原因是类似于扁平形物的粉末颗粒在其沉积时几乎完全熔融。
使用颗粒尺寸较粗，尤其>45μm的颗粒将降低其熔融程度，可能提高涂层中的固有孔隙率，并因此减少每单位长度的竖直裂纹的数量并最终降低涂层的热适应性。
其解决方案是采用“闪速”涂覆方法。这意指在下涂层与上涂层之间沉积粗糙薄涂层。这可以用两种方法实现：
1.在最后的一道次或复数个道次期间改变下涂层10的喷洒参数：
通过在最后的一道次或复数个道次期间采用较冷的参数，使细颗粒的熔融程度显著降低，并且颗粒沉积为半熔融的并且不为平整的扁平形物。这将在不影响下涂层的显微结构的情况下显著提高粗糙度。
2.改变用于陶瓷下涂层10的最后的一道次或复数个道次的粉末。所述粉末可以被改变并被替换为较粗颗粒(尤其>45μm)以沉积最后的一道次或复数个道次的陶瓷下涂层。
基本上，所得陶瓷涂层系统16将包括以下：
a)在基底4或金属结合涂层7上用细粉末喷洒的具有表面20的作为陶瓷下涂层10的部分稳定氧化锆(PSZ)，
b)喷洒在中间的具有较粗糙表面19的部分稳定氧化锆的薄涂层(陶瓷中间涂层11)，
c)用细粉末喷洒的作为陶瓷上涂层13的全稳定氧化锆(FSZ)；上涂层13有外表面23。
本发明涉及改善双层陶瓷涂层系统16(其尤其是分段的)的稳健性。
经验表明温度控制在双层陶瓷涂层系统16的喷洒期间的重要性，并且温度控制在大型组件的喷洒期间可能相当具有挑战性。在两个尤其为分段的涂层10、13之间引入粗糙表面19的情况下，陶瓷涂层系统16对温度的敏感性降低，从而提供整体更稳健的陶瓷涂层系统。采用上述两种方法相当容易，并且二者都可以容易地并入到组件的喷洒序列中。
附图示出了本发明的组件1。
组件1尤其具有金属基底4，其优选为基于镍或基于钴的超级合金。
在金属基底4上，存在金属结合涂层7，尤其基于NiCoCrAl，意指NiCoCrAlY、NiCoCrAlYSi、NiCoCrAlYRe、NiCoCrAlYTa等等。
在金属结合涂层7的顶部上，存在如上所述的陶瓷涂层系统16：
PSZ分段的下涂层10
PSZ分段的中间涂层11
FSZ分段的上涂层13。
Claims (6)
1.一种组件(1)，
包括至少：
基底(4)，
尤其是基于镍的超级合金或基于钴的超级合金；
金属结合涂层(7)，
尤其是基于NiCoCrAl组合物的金属结合涂层(7)；
陶瓷涂层系统(16)，
具有陶瓷下涂层(10)和
陶瓷上涂层(13)，
其特征在于，
其中在下涂层(10)与上涂层(13)之间定位有中间涂层(11)，
所述中间涂层(11)提供较粗糙的表面(19)
所述中间涂层(11)的最大厚度为所述下涂层(10)或所述上涂层(13)的厚度的25％。
2.根据权利要求1所述的涂层系统，
其中所述下涂层(10)显示出比所述上涂层(13)更细的显微结构。
3.一种用于生产根据权利要求1的陶瓷涂层系统的方法，
包括以下步骤：
喷洒陶瓷下涂层(10)，
尤其通过使用细颗粒粉末，
以实现最大的熔融程度；
沉积中间涂层(11)，包括
在最后的一道次或复数个道次期间改变所述陶瓷下涂层(10)的喷洒参数，这通过在最后的一道次或复数个道次期间采用较冷的参数而实施，从而显著降低所述颗粒的熔融程度，并且
将所述颗粒沉积为半熔融的状态并且不为展平的扁平形物，
导致显著提高的粗糙度，
或者
通过将用于所述陶瓷下涂层(10)的最后的一道次或复数个道次的粉末替换为更粗颗粒，尤其是大于45μm的更粗颗粒来改变所述粉末，
以沉积所述最后的一道次或复数个道次的颗粒，从而将所述中间涂层(11)沉积至所述陶瓷下涂层(10)上；
以及最后喷洒以细粉末从而喷洒的全稳定陶瓷上涂层(13)。
4.根据权利要求1、2或3中任一项所述的涂层或方法，
其中所述陶瓷下涂层(10)为基于部分稳定氧化锆的涂层，
尤其是分段的。
5.根据权利要求1、2、3或4中任一项所述的涂层或方法，
其中所述陶瓷中间涂层(11)为基于部分稳定氧化锆的涂层，
尤其是分段的。
6.根据权利要求1、2、3、4或5中任一项所述的涂层或方法，
其中所述陶瓷上涂层(13)为基于全稳定氧化锆的涂层，
尤其是分段的。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20205571.1 | 2020-11-04 | ||
| EP20205571.1A EP3995601A1 (en) | 2020-11-04 | 2020-11-04 | Bilayer thermal barrier coatings with an advanced interface |
| PCT/EP2021/077439 WO2022096211A1 (en) | 2020-11-04 | 2021-10-05 | Bilayer thermal barrier coatings with an advanced interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116615573A true CN116615573A (zh) | 2023-08-18 |
Family
ID=73059641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180073240.2A Pending CN116615573A (zh) | 2020-11-04 | 2021-10-05 | 具有先进界面的双层热屏障涂层 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20230383393A1 (zh) |
| EP (2) | EP3995601A1 (zh) |
| KR (1) | KR20230097141A (zh) |
| CN (1) | CN116615573A (zh) |
| WO (1) | WO2022096211A1 (zh) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7291403B2 (en) * | 2004-02-03 | 2007-11-06 | General Electric Company | Thermal barrier coating system |
| US20150147524A1 (en) * | 2013-11-26 | 2015-05-28 | Christopher A. Petorak | Modified thermal barrier composite coatings |
| US20190032189A1 (en) * | 2017-07-31 | 2019-01-31 | General Electric Company | Adhesion of thermal spray coatings over a smooth surface |
-
2020
- 2020-11-04 EP EP20205571.1A patent/EP3995601A1/en not_active Withdrawn
-
2021
- 2021-10-05 US US18/033,099 patent/US20230383393A1/en active Pending
- 2021-10-05 WO PCT/EP2021/077439 patent/WO2022096211A1/en active Application Filing
- 2021-10-05 CN CN202180073240.2A patent/CN116615573A/zh active Pending
- 2021-10-05 EP EP21794312.5A patent/EP4208580A1/en active Pending
- 2021-10-05 KR KR1020237018329A patent/KR20230097141A/ko unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230097141A (ko) | 2023-06-30 |
| US20230383393A1 (en) | 2023-11-30 |
| WO2022096211A1 (en) | 2022-05-12 |
| EP3995601A1 (en) | 2022-05-11 |
| EP4208580A1 (en) | 2023-07-12 |
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