2O3及少量尖晶石結(jié)構(gòu)的混合氧化物組成。雙層粘結(jié)層減少了Al元素向基材的擴(kuò)散,而Cr元素由于濃度梯度擴(kuò)散導(dǎo)致拓?fù)涿芏?TCP)相的析出及二次反應(yīng)區(qū)(SRZ)深度的增加。"/>

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DD90單晶高溫合金熱障涂層抗氧化及熱循環(huán)性能
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中國(guó)科學(xué)院金屬研究所

作者簡(jiǎn)介:

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中圖分類號(hào):

TG174.44

基金項(xiàng)目:

中國(guó)科學(xué)院金屬研究所創(chuàng)新基金(項(xiàng)目號(hào)2022-PY08)；中國(guó)科學(xué)院重點(diǎn)部署項(xiàng)目(項(xiàng)目號(hào)ZDRW-CN-2021-2-2)


Oxidation resistance and thermal cycling properties of thermal barrier coatings for DD90 single crystal superalloy
Author:
Affiliation:

Institute of Metal Research,Chinese Academy of Sciences

Fund Project:

IMR Innovation Fund (NO. 2022-PY08)；Key Research Program of the Chinese Academy of Sciences (NO. ZDRW-CN-2021-2-2)

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    摘要:

    在第三代單晶高溫合金DD90上制備熱障涂層,采用超音速火焰噴涂(HVOF)制備NiCrAlY+NiCoCrAlTaY雙層結(jié)構(gòu)的粘結(jié)層,大氣等離子噴涂(APS)制備YSZ和MSZ/YSZ結(jié)構(gòu)的陶瓷層。在1150℃抗氧化試驗(yàn)中,YSZ涂層增重量明顯高于MSZ涂層。在1200℃熱循環(huán)250次后,兩種涂層沒有發(fā)生明顯相變,MSZ涂層抗燒結(jié)性更優(yōu)異。兩種涂層TGO 主要由Al2O3及少量尖晶石結(jié)構(gòu)的混合氧化物組成。雙層粘結(jié)層減少了Al元素向基材的擴(kuò)散,而Cr元素由于濃度梯度擴(kuò)散導(dǎo)致拓?fù)涿芏?TCP)相的析出及二次反應(yīng)區(qū)(SRZ)深度的增加。

    Abstract:

    Thermal barrier coatings were deposited on the third generation single crystal superalloys DD90.NiCrAlY+NiCoCrAlTaY double-layer bond coatings were prepared by high velocity oxy-fuel spray (HVOF).The ceramic layers were YSZ and MSZ/YSZ structures which were prepared by using atmospheric plasma spray technique, respectively. The oxidation resistance test at 1150℃ shows that the weight gain of the YSZ coating is significantly higher than that of the MSZ coating. After 250 thermal cycles at 1200℃, the two coatings do not occur obvious phase transition and the sintering resistance of the MSZ coating is better. The TGO of the two coatings mainly consists of Al2O3 and a small amount of spinel structure mixed oxides. The double-layer bond layer reduces the diffusion of Al element into the substrate, while due to the concentration gradient diffusion of Cr element leads to the precipitation of topological close-packed (TCP) phases and the increase in the depth of secondary reaction zone (SRZ).

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王俊哲,高明浩,徐娜,常輝,崔鳳靜,欒勝家,賈博文,張甲,常新春. DD90單晶高溫合金熱障涂層抗氧化及熱循環(huán)性能[J].稀有金屬材料與工程,2023,52(12):4355~4360.[Wang Junzhe, Gao Minghao, Xu Na, Chang Hui, Cui Fengjing, Luan Shengjia, Jia Bowen, Zhang Jia, Chang Xinchun. Oxidation resistance and thermal cycling properties of thermal barrier coatings for DD90 single crystal superalloy[J]. Rare Metal Materials and Engineering,2023,52(12):4355~4360.]
DOI：10.12442/j. issn.1002-185X.20230422

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  • 收稿日期:2023-07-04
  • 最后修改日期:2023-08-22
  • 錄用日期:2023-08-24
  • 在線發(fā)布日期: 2023-12-29
  • 出版日期: 2023-12-22