2-8wt% Y2O3; 可磨耗性; 溶膠凝膠; 孔隙率; 磨耗深度"/> 2-8wt% Y2O3涂層是經(jīng)常采用的封嚴(yán)涂層基體。涂層中的孔隙可以增加涂層的可磨耗性。本文利用聚苯酯(PHB)增加等離子噴涂的ZrO2-8 wt% Y2O3涂層的孔隙率。為了避免聚苯酯在等離子噴涂過程中的燒損,利用溶膠-凝膠法在聚苯酯顆粒表面沉積一層TiO2層。文中將討論采用此方法制成的涂層的形態(tài)、孔隙率、硬度和可磨耗性。結(jié)果表明,在噴涂粉末中混合包覆型的聚苯酯后,涂層的孔隙率將會(huì)得到提升,涂層硬度將會(huì)下降。磨耗試驗(yàn)的結(jié)果表明涂層的磨耗深度隨著涂層孔隙率的增加而增加。"/>

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多孔ZrO2-8 wt% Y2O3涂層的制備及性能
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天津市民用航空器適航與維修重點(diǎn)實(shí)驗(yàn)室,

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基金項(xiàng)目:

國(guó)家自然基金（51501222）；民航局科技項(xiàng)目（MHRD20160106）；中央高?；緲I(yè)務(wù)經(jīng)費(fèi)（3122015L001）


Formation and Properties of Porous ZrO2-8 wt% Y2O3 Coatings
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Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance,Civil Aviation University of China,Tianjin,College of Science,Civil Aviation University of China

Fund Project:

National Natural Science Foundation of China (51501222), Civil Aviaton Science and Technology Project (MHRD20160106), Fundamental Research Funds for the Central Universities (3122015L001)

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    摘要:

    航空發(fā)動(dòng)機(jī)的效率與轉(zhuǎn)動(dòng)葉片和機(jī)匣之間的間隙密切相關(guān)。為了控制轉(zhuǎn)子和靜子之間的間隙,需要在機(jī)匣表面制備可磨耗的封嚴(yán)涂層。在發(fā)動(dòng)機(jī)的高溫端,ZrO2-8wt% Y2O3涂層是經(jīng)常采用的封嚴(yán)涂層基體。涂層中的孔隙可以增加涂層的可磨耗性。本文利用聚苯酯(PHB)增加等離子噴涂的ZrO2-8 wt% Y2O3涂層的孔隙率。為了避免聚苯酯在等離子噴涂過程中的燒損,利用溶膠-凝膠法在聚苯酯顆粒表面沉積一層TiO2層。文中將討論采用此方法制成的涂層的形態(tài)、孔隙率、硬度和可磨耗性。結(jié)果表明,在噴涂粉末中混合包覆型的聚苯酯后,涂層的孔隙率將會(huì)得到提升,涂層硬度將會(huì)下降。磨耗試驗(yàn)的結(jié)果表明涂層的磨耗深度隨著涂層孔隙率的增加而增加。

    Abstract:

    The efficiency of a gas turbine engine is highly dependent upon the clearance between blades and engine case. To control the over-tip leakage, an abradable coating system is sprayed on the case surface. In the high temperature section, a ZrO2-8 wt% Y2O3 (YSZ) coating is usually applied as matrix. Pores in the coating are to enhance their abradability. In this study, poly-p-hydroxybenzoate (PHB) powder was used as a pore-forming material. To avoid burning loss of PHB during the spraying process, a sol-gel method was utilized to coat a TiO2 shell on the PHB powder surface. The characteristics of the coatings were investigated in this work, such as morphology, porosity, hardness and abradability. The results show that the coated PHB improved the porosity of the YSZ coating, and then decreased the coating hardness. Finally, an abradability test was utilized to exhibit the incursion depth increased with the increase of coating porosity.

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丁坤英,程濤濤.多孔ZrO2-8 wt% Y2O3涂層的制備及性能[J].稀有金屬材料與工程,2018,47(6):1677~1681.[Ding Kunying, Cheng Taotao. Formation and Properties of Porous ZrO2-8 wt% Y2O3 Coatings[J]. Rare Metal Materials and Engineering,2018,47(6):1677~1681.]
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  • 收稿日期:2016-10-17
  • 最后修改日期:2017-04-11
  • 錄用日期:2017-05-15
  • 在線發(fā)布日期: 2018-09-06
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