CN1986889A - 用于隔热涂层的经铂改性的NiCoCrAlY结合涂层 - Google Patents
用于隔热涂层的经铂改性的NiCoCrAlY结合涂层 Download PDFInfo
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Abstract
一种涡轮发动机部件具有由镍基超合金形成的基底和施涂在基底表面上的经铂改性的NiCoCrAlY结合涂层。在本文中描述了两种用于形成经铂改性的NiCoCrAlY结合涂层的方法。
Description
技术领域
本发明涉及一种用于隔热涂层的经铂改性的NiCoCrAlY结合涂层和一种形成所述结合涂层的方法。
背景技术
涡轮发动机部件由于暴露在高温气体中而要经受高温。这种暴露可导致在所述部件中形成所不希望的缺陷。为了保护所述部件,在涡轮发动机部件表面上施涂结合涂层和/或陶瓷外涂层。
尽管存在这些涂层,但是依然需要为所述部件提供改进的抗氧化性的涂层。
发明内容
因此,本发明针对一种用于涡轮发动机部件的改进的涂层体系以及形成所述涂层体系的方法。
根据本发明,提供一种用于在基底上形成涂层的方法。所述方法主要包括以下步骤:提供基底,在基底表面上沉积一层铂,将一层NiCoCrAlY沉积到所述铂层上,以及对具有沉积层的基底进行热处理从而形成经铂改性的NiCoCrAlY结合涂层。
根据本发明,提供另一种可选的用于在基底上形成涂层的方法。所述方法主要包括以下步骤:提供基底,在基底表面上沉积一层NiCoCrAlY,将一层铂沉积到所述NiCoCrAlY层上,以及对具有沉积层的基底进行热处理从而形成经铂改性的NiCoCrAlY结合涂层。
根据本发明,提供一种涡轮发动机部件,所述涡轮发动机部件主要包括由镍基超合金形成的基底和施涂在基底表面上的经铂改性的NiCoCrAlY结合涂层。
下面,结合附图并通过以下说明书对本发明的用于隔热涂层的经铂改性的NiCoCrAlY结合涂层的其它详细情况,以及其它目的和所附带的优点进行描述。在所述附图中使用相同的附图标记表示相同的元件。
附图说明
图1是根据本发明的第一涂层体系的示意图;和
图2是根据本发明的第二涂层体系的示意图。
具体实施方式
如所讨论地,本发明针对一种能够适用于暴露在高温气体中的涡轮发动机部件如叶片、轮叶和密封件的改进的涂层体系。该涂层体系包括对形成涡轮发动机部件的镍基超合金提供氧化防护的薄的结合涂层。所述结合涂层是经铂改性的NiCoCrAlY涂层。向结合涂层中添加铂提高了在涡轮发动机部件应用过程中形成的氧化铝氧化皮的附着性能。
图1示出了用于形成根据本发明的涂层体系的第一工序。如图中所示,镍基合金基底10具有表面12。优选采用电镀技术在表面12上沉积一层铂层14。仅仅为了阐述方便,有效的电镀液中可包含量在17-26克/升范围内的铂。电流密度大小可在20-30安培/平方英尺范围内。电镀时间由所需厚度来决定。电镀液的温度可升高至200华氏度。电镀铂层的厚度可在约0.01-1.0密耳的范围内。给出这些电镀阐述仅是用于进行阐述的目的,同样可以使用其它的铂电镀参数。还可以采用电镀之外的其它技术例如包括但不限于溅射以及其它沉积技术来沉积铂层。
此后,一层NiCoCrAlY材料层16被沉积到铂层上。优选地,采用阴极电弧沉积工艺沉积NiCoCrAlY材料。用于通过阴极电弧等离子体蒸气沉积施涂本发明的涂层的技术在美国专利Nos.5,972,185;5,932,078;6,036,828;5,792,267;和6,224,726中有所论述,上述所有专利在此作为参考而被结合在本文中。也可采用其它可选的沉积方法包括,但不限于,其它一些等离子体气相沉积技术,例如磁控管溅射法和电子束等离子体气相沉积技术。当不考虑厚度时,可使用多种热喷涂技术例如低压等离子体喷涂和HVOF(高速氧燃料火焰喷涂)技术。进行沉积的NiCoCrAlY材料可具有以下组分,所述组分包括重量百分比为约4.0%-25%,优选为约4.0%-18%的铬;重量百分比为约2.0%-28%,优选为约2.0%-24%的钴;重量百分比为约5.5%-15%,优选为约5.5%-13.5%的铝;重量百分比为约0.1%-1.6%,优选为约0.1%-0.8%的钇;重量百分比高达2.0%,优选为约0.001%-0.4%的铪;重量百分比高达2.0%,优选为约0.001%-0.7%的硅;重量百分比为约3.0%-12%,优选为约3.0%-10%的钽;重量百分比为约1.0%-12%,优选为约1.0%-9.0%的钨;重量百分比为1.0%-10%,优选为约1.0%-5.0%的铼;重量百分比高达2.0%,优选为约0.001%-1.0%的锆;重量百分比高达4.0%,优选为约0.001%-2.0%的铌;重量百分比高达4.0%,优选为约0.001%-2.0%的钛;重量百分比为约0.2%-6.0%,优选为约0.2%-4.0%的钼;和余量的镍。所述涂层还可包括重量百分比高达2.0%的其它元素作为杂质。涂层中的钇提高了在使用过程中形成的氧化铝氧化皮层18的附着性能。硫通常迁移至氧化铝氧化皮层18;然而,钇的存在防止了这种情况的发生。
在沉积NiCoCrAlY材料之后,对具有沉积层14和16的基底10进行扩散热处理。在约1200华氏度-约2100华氏度范围内的一定温度下进行时间为约2.0-15个小时的扩散热处理。优选在惰性气体气氛中如在氩气气氛中进行所述扩散处理。经过完全热处理的经铂改性的NiCoCrAlY结合涂层的铂含量可在重量百分比为5.0%-70%,优选为10%-60%的范围内,且厚度在约1.0-5.0密耳的范围内。结合涂层典型地形成致密的三维互连两相显微结构,其晶粒尺寸为0.5-30微米。铂可由钯、铑、铱及其混合物所替代。
一旦形成结合涂层,可使用本领域已公知的任何适当的陶瓷组分施涂陶瓷外涂层20。陶瓷外涂层20的优选组分是钇稳定氧化锆,例如重量百分比为7.0%的钇稳定氧化锆。其它有利组分包括如美国专利No.6,730,422所述的基于氧化锆的烧绿石、摩尔百分比为5.0%-60%的氧化钆稳定氧化锆、和用多种三氧化二镧系元素稳定的氧化锆及其混合物,所述专利在此作为参考而被引用。陶瓷外涂层20的厚度可在约1.0-50密耳的范围内,优选在3.0-15密耳的范围内。
可以使用本领域已公知的任何适当的电子束-物理气相沉积(EB-PVD)技术施涂陶瓷外涂层20。一种优选的沉积技术是电子束-物理气相沉积(EB-PVD)技术。优选在基底温度在约1700-2200华氏度范围内且室压为约0.1-1.0毫托的条件下,将陶瓷涂层施涂到结合涂覆的基底上。原料进料速度为约0.2-1.5英寸/小时条件下的沉积时间为20-120分钟。其它适当的沉积技术包括热喷涂、化学气相沉积以及其它物理气相沉积技术,所述物理气相沉积技术包括但不限于阴极电弧沉积、溅射和热蒸发。在所有这些沉积技术中可选择性地使用惰性或反应性气氛,如本领域的技术人员已公知地。
当采用气相沉积技术进行生产时,陶瓷外涂层20的特征在于具有柱状晶粒的柱状晶显微结构或者所述柱状晶大体上垂直于表面12进行取向。柱状晶粒或柱状晶自所述结合涂层或氧化铝氧化皮层18向外延伸,所述氧化铝氧化皮层在沉积陶瓷层20的过程之前或之中有意地形成在结合涂层上。另外,采用增大蒸气物质在基底表面上的迁移率例如基底偏置或高能离子冲击等手段的气相沉积技术导致形成致密的等轴陶瓷涂层。另一种可选方式是,通过在基底上沉积液滴形成的热喷涂涂层具有包含随意堆积的液体凝固薄片的多孔显微结构。这些薄片典型地带有微裂纹并且典型地在其间截留微孔,从而导致形成容许应变的显微结构。
下面参见图2,图中示出了用于形成根据本发明的涂层体系的另一可选工序。在该方法中,通过在基底表面12上沉积一层NiCoCrAlY层16,然后将一层铂层14沉积到所述NiCoCrAlY层16上而形成结合涂层。该NiCoCrAlY层可具有与如上所述相同的组分并且可采用上述技术进行沉积。铂层14可具有与如上所述相同的组分范围并且可采用上述电镀技术进行沉积。在铂沉积步骤之后使用与如上所述相同的参数执行扩散热处理步骤。优选的结合涂层厚度与在现有技术方法中所讨论的厚度相同。可按照如上所述方式沉积陶瓷外涂层20。
根据本发明进行涂覆的样品在超过2000华氏度的条件下在风洞(burner rig)中经受得住大于1000小时的循环氧化。
Claims (40)
1、一种用于在基底上形成涂层的方法,所述方法包括以下步骤:
提供基底;
在所述基底表面上沉积一层铂;
将一层NiCoCrAlY沉积到所述铂层上;以及
对具有所述沉积层的所述基底进行热处理从而形成经铂改性的NiCoCrAlY结合涂层。
2、根据权利要求1所述的方法,其中所述提供基底的步骤包括提供由镍基合金形成的基底并且所述铂层沉积步骤包括将所述铂层电镀在所述基底表面上。
3、根据权利要求1所述的方法,其中所述铂层沉积步骤包括沉积厚度在约0.01-1.0密耳范围内的一层铂。
4、根据权利要求1所述的方法,其中所述结合涂层中存在的所述铂的量在重量百分比为约5.0%-70%的范围内。
5、根据权利要求1所述的方法,其中所述结合涂层中存在的所述铂的量在重量百分比为约10%-60%的范围内。
6、根据权利要求1所述的方法,其中所述NiCoCrAlY沉积步骤包括采用阴极电弧沉积工艺沉积所述NiCoCrAlY涂层。
7、根据权利要求1所述的方法,其中所述NiCoCrAlY沉积步骤包括沉积NiCoCrAlY材料,所述NiCoCrAlY材料包括重量百分比为约4.0%-25%的铬,重量百分比为约2.0%-28%的钴,重量百分比为约5.5%-15%的铝,重量百分比为约0.1%-1.6%的钇,重量百分比高达约2.0%的铪,重量百分比高达约2.0%的硅,重量百分比为约3.0%-12%的钽,重量百分比为约1.0%-12%的钨,重量百分比为约1.0%-10%的铼,重量百分比高达约2.0%的锆,重量百分比高达约4.0%的铌,重量百分比高达约4.0%的钛,重量百分比为约0.2%-6.0%的钼,和余量的镍。
8、根据权利要求1所述的方法,其中所述NiCoCrAlY沉积步骤包括沉积NiCoCrAlY材料,所述NiCoCrAlY材料包括重量百分比为约4.0%-18%的铬,重量百分比为约2.0%-24%的钴,重量百分比为约5.5%-13.5%的铝,重量百分比为约0.1%-0.8%的钇,重量百分比为约0.001%-0.4%的铪,重量百分比为约0.001%-0.7%的硅,重量百分比为约3.0%-10%的钽,重量百分比为约1.0%-9.0%的钨,重量百分比为约1.0%-5.0%的铼,重量百分比为约0.001%-1.0%的锆,重量百分比为约0.001%-2.0%的铌,重量百分比为约0.001%-2.0%的钛,重量百分比为约0.2%-4.0%的钼,和余量的镍。
9、根据权利要求1所述的方法,其中所述热处理步骤包括在约1200华氏度-约2100华氏度范围内的一定温度下加热具有所述沉积层的所述基底约2.0-15个小时从而形成所述结合涂层。
10、根据权利要求1所述的方法,进一步包括在厚度为约1.0-50密耳范围内的所述结合涂层上施涂陶瓷外涂层。
11、根据权利要求10所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂钇稳定氧化锆外涂层。
12、根据权利要求10所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂基于氧化锆的烧绿石外涂层。
13、根据权利要求10所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂摩尔百分比为5%-60%的氧化钆稳定氧化锆外涂层。
14、根据权利要求10所述的方法,进一步包括在厚度为约3.0-15密耳范围内的所述结合涂层上施涂陶瓷外涂层并且所述施涂陶瓷外涂层的步骤包括使用电子束-物理气相沉积技术施涂所述外涂层,由此形成具有柱状晶显微结构的所述外涂层,其中所述柱状晶粒大体上垂直于所述基底表面进行取向并且自所述结合涂层向外延伸。
15、一种用于在基底上形成涂层的方法,所述方法包括以下步骤:
提供基底;
在所述基底表面上沉积一层NiCoCrAlY;
将一层铂沉积到所述NiCoCrAlY层上;以及
对具有所述沉积层的所述基底进行热处理从而形成经铂改性的NiCoCrAlY结合涂层。
16、根据权利要求15所述的方法,其中所述提供基底的步骤包括提供由镍基合金形成的基底并且所述铂层沉积步骤包括将所述铂层电镀在所述基底表面上。
17、根据权利要求15所述的方法,其中所述铂层沉积步骤包括沉积厚度在0.01-1.0密耳范围内的一层铂。
18、根据权利要求15所述的方法,其中所述热处理步骤包括形成所述结合涂层,从而使得在所述结合涂层中存在的所述铂的量在重量百分比为约5.0%-70%的范围内。
19、根据权利要求15所述的方法,其中所述热处理步骤包括形成所述结合涂层,从而使得在所述结合涂层中存在的所述铂的量在重量百分比为约10%-60%的范围内。
20、根据权利要求15所述的方法,其中所述NiCoCrAlY沉积步骤包括采用阴极电弧沉积工艺沉积所述NiCoCrAlY涂层。
21、根据权利要求15所述的方法,其中所述NiCoCrAlY沉积步骤包括沉积NiCoCrAlY材料,所述NiCoCrAlY材料包括重量百分比为约4.0%-25%的铬,重量百分比为约2.0%-28%的钴,重量百分比为约5.5%-15%的铝,重量百分比为约0.1%-1.6%的钇,重量百分比高达约2.0%的铪,重量百分比高达约2.0%的硅,重量百分比为约3.0%-12%的钽,重量百分比为约1.0%-12%的钨,重量百分比为约1.0%-10%的铼,重量百分比高达约2.0%的锆,重量百分比高达约4.0%的铌,重量百分比高达约4.0%的钛,重量百分比为约0.2%-6.0%的钼,和余量的镍。
22、根据权利要求15所述的方法,其中所述NiCoCrAlY沉积步骤包括沉积NiCoCrAlY材料,所述NiCoCrAlY材料包括重量百分比为约4.0%-18%的铬,重量百分比为约2.0%-24%的钴,重量百分比为约5.5%-13.5%的铝,重量百分比为约0.1%-0.8%的钇,重量百分比为约0.001%-0.4%的铪,重量百分比为约0.001%-0.7%的硅,重量百分比为约3.0%-10%的钽,重量百分比为约1.0%-9.0%的钨,重量百分比为约1.0%-5.0%的铼,重量百分比为约0.001%-1.0%的锆,重量百分比为约0.001%-2.0%的铌,重量百分比为约0.001%-2.0%的钛,重量百分比为约0.2%-4.0%的钼,和余量的镍。
23、根据权利要求15所述的方法,其中所述热处理步骤包括在约1200华氏度-约2100华氏度范围内的一定温度下加热具有所述沉积层的所述基底约2.0-15个小时从而形成所述结合涂层。
24、根据权利要求15所述的方法,进一步包括在厚度为约1.0-50密耳范围内的所述结合涂层上施涂陶瓷外涂层。
25、根据权利要求15所述的方法,进一步包括在厚度为约3.0-15密耳范围内的所述结合涂层上施涂陶瓷外涂层。
26、根据权利要求24所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂钇稳定氧化锆外涂层。
27、根据权利要求24所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂基于氧化锆的烧绿石外涂层。
28、根据权利要求24所述的方法,其中所述施涂陶瓷外涂层的步骤包括施涂摩尔百分比为5.0%-60%的氧化钆稳定氧化锆。
29、根据权利要求24所述的方法,其中所述施涂陶瓷外涂层的步骤包括使用电子束-物理气相沉积技术施涂所述外涂层,由此形成具有柱状晶显微结构的所述外涂层,其中所述柱状晶粒大体上垂直于所述基底表面进行取向并且自所述结合涂层向外延伸。
30、一种涡轮发动机部件,包括:
由镍基超合金形成的基底;和
施涂在所述基底表面上的经铂改性的NiCoCrAlY结合涂层。
31、根据权利要求30所述的涡轮发动机部件,其中所述结合涂层的厚度在1.0-5.0密耳的范围内。
32、根据权利要求30所述的涡轮发动机部件,进一步包括陶瓷外涂层和位于所述陶瓷外涂层与所述结合涂层之间的一层氧化铝氧化皮,由此所述结合涂层提高了所述氧化铝氧化皮的附着性能。
33、根据权利要求32所述的涡轮发动机部件,其中所述陶瓷外涂层包括钇稳定氧化锆。
34、根据权利要求32所述的涡轮发动机部件,其中所述陶瓷外涂层包括基于氧化锆的烧绿石外涂层。
35、根据权利要求32所述的涡轮发动机部件,其中所述陶瓷外涂层包括摩尔百分比为5%-60%的氧化钆稳定氧化锆。
36、根据权利要求32所述的涡轮发动机部件,其中所述陶瓷外涂层的厚度在1.0-50密耳的范围内并且柱状晶显微结构中的所述柱状晶粒大体上垂直于所述基底表面进行取向并且自所述结合涂层和氧化铝氧化皮向外延伸。
37、根据权利要求36所述的涡轮发动机部件,其中所述厚度在3.0-15密耳的范围内。
38、根据权利要求30所述的涡轮发动机部件,其中所述结合涂层具有三维互连两相显微结构,其晶粒尺寸为0.5-30微米。
39、根据权利要求30所述的涡轮发动机部件,其中所述结合涂层包含重量百分比为约5.0%-70%的铂。
40、根据权利要求30所述的涡轮发动机部件,其中所述结合涂层包含重量百分比为约10%-60%的铂。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US11/315,535 US20070138019A1 (en) | 2005-12-21 | 2005-12-21 | Platinum modified NiCoCrAlY bondcoat for thermal barrier coating |
US11/315535 | 2005-12-21 |
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CN1986889A true CN1986889A (zh) | 2007-06-27 |
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CNA2006101690955A Pending CN1986889A (zh) | 2005-12-21 | 2006-12-20 | 用于隔热涂层的经铂改性的NiCoCrAlY结合涂层 |
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US (1) | US20070138019A1 (zh) |
EP (1) | EP1801263B1 (zh) |
JP (1) | JP2007169788A (zh) |
KR (1) | KR20070067602A (zh) |
CN (1) | CN1986889A (zh) |
IL (1) | IL178956A0 (zh) |
MX (1) | MXPA06014620A (zh) |
SG (1) | SG133525A1 (zh) |
TW (1) | TW200724717A (zh) |
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CN109468639A (zh) * | 2018-12-29 | 2019-03-15 | 昆明理工大学 | 一种超极限锆合金及其制备方法 |
CN109487195A (zh) * | 2018-12-29 | 2019-03-19 | 昆明理工大学 | 一种超极限铁合金及其制备方法 |
CN109487196A (zh) * | 2018-12-29 | 2019-03-19 | 昆明理工大学 | 一种超极限镍合金及其制备方法 |
CN109554707A (zh) * | 2018-12-29 | 2019-04-02 | 昆明理工大学 | 一种超极限铝合金及其制备方法 |
CN109554708A (zh) * | 2018-12-29 | 2019-04-02 | 昆明理工大学 | 一种超极限钛合金及其制备方法 |
CN109609952A (zh) * | 2018-12-29 | 2019-04-12 | 昆明理工大学 | 一种超极限镁合金及其制备方法 |
CN109609953A (zh) * | 2018-12-29 | 2019-04-12 | 昆明理工大学 | 一种超极限铜合金及其制备方法 |
CN109719414A (zh) * | 2018-12-29 | 2019-05-07 | 昆明理工大学 | 一种超极限锡合金及其制备方法 |
WO2020134655A1 (zh) * | 2018-12-29 | 2020-07-02 | 昆明理工大学 | 一种超极限合金及其制备方法 |
US11530485B2 (en) | 2018-12-29 | 2022-12-20 | Kunming University Of Science And Technology | Ultralimit alloy and preparation method therefor |
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MXPA06014620A (es) | 2008-10-24 |
EP1801263B1 (en) | 2013-03-27 |
SG133525A1 (en) | 2007-07-30 |
TW200724717A (en) | 2007-07-01 |
IL178956A0 (en) | 2007-03-08 |
EP1801263A1 (en) | 2007-06-27 |
KR20070067602A (ko) | 2007-06-28 |
JP2007169788A (ja) | 2007-07-05 |
US20070138019A1 (en) | 2007-06-21 |
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