[1]陳琳,汪俊,馮晶.稀土鉭酸鹽陶瓷熱障涂層的研究進展[J].中國材料進展,2017,(12):036-40.[doi:10.7502/j.issn.1674-3962.2017.12.08]
CHAN Lin,WANG Jun,FENG Jing.Research Progress of Rare Earth Tantalate Ceramics as Thermal Barrier Coatings[J].MATERIALS CHINA,2017,(12):036-40.[doi:10.7502/j.issn.1674-3962.2017.12.08]
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稀土鉭酸鹽陶瓷熱障涂層的研究進展(
)
中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數(shù):
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2017年第12期
- 頁碼:
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036-40
- 欄目:
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前沿綜述
- 出版日期:
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2017-12-31
文章信息/Info
- Title:
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Research Progress of Rare Earth Tantalate Ceramics as Thermal Barrier Coatings
- 作者:
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陳琳; 汪俊; 馮晶
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昆明理工大學 材料科學與工程學院
- Author(s):
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CHAN Lin; WANG Jun; FENG Jing
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(School of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, People’s Republic of China)
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- 關鍵詞:
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陶瓷; 熱障涂層; RETaO4; 高溫相穩(wěn)定性; 鐵彈性; 熱導率
- Keywords:
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Ceramics; Thermal barrier coatings; RETaO4; High temperature phase stability; Ferroelastic; Thermal conductivity
- DOI:
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10.7502/j.issn.1674-3962.2017.12.08
- 文獻標志碼:
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A
- 摘要:
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熱障涂層材料是高效燃氣輪機穩(wěn)定工作最重要的材料之一。在燃氣輪機使用中不僅能達到抗腐蝕、提高工作溫度的目的，還可以減少燃油消耗，延長發(fā)動機使用壽命等。目前廣泛使用的熱障涂層材料是氧化釔穩(wěn)定氧化鋯(YSZ)，其具有一定局限性，在高溫下YSZ發(fā)生相變體積變化致使涂層失效，因此使用溫度在1200℃以下，發(fā)展新型熱障涂層材料勢在必行�，F(xiàn)有的其他類型熱障涂層材料雖然在熱導率或熱膨脹系數(shù)等方面優(yōu)于氧化釔穩(wěn)定氧化鋯，但后者具有優(yōu)異的力學性能，這是由其鐵彈性決定的。而稀土鉭酸鹽作為一種新的鐵彈體陶瓷熱障涂層材料，除了其使用溫度可達1600℃外，兼具有優(yōu)異的高溫相穩(wěn)定性及力學性能、相變前后體積變化小等優(yōu)點，更重要的是其熱導率低于YSZ及其它的熱障涂層候選材料，這使得稀土鉭酸鹽陶瓷成為一種新型的熱障涂層候選材料。
- Abstract:
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Thermal barrier coating (TBCs) is one of the most important materials to keep high efficient gas turbine working stability. It can not only improve the corrosion resistance and operated temperatures of gas turbine, but also reduce the fuel consumption and extend the lifetime of gas turbine, and so on. The current TBCs is yttria stabilized zirconia (YSZ), there are some limitations of YSZ, such as the operating temperature less than 1200℃ because of volume change caused by phase transition, which make coatings failure. It’s urgent for us to develop new kind of TBCs in current. There are several kinds of TBCs with better thermal conductivity or thermal expansion coefficient than YSZ, but YSZ has better mechanical properties than these potential thermal barrier coatings compounds, depended on its ferroelastic properties. Rare earth tantalate is a new kind of ferroelastic materials, its operating temperature up to 1600℃, what’s more it has excellent high temperature phase stability and mechanical properties, and the changed volume of phase transition is tiny, and so on. Moreover, its thermal conductivity is lower than YSZ and other TBCs compounds. Finally, the rare earth tantalate is the potential thermal barrier coatings as the next generation of gas turbine.
更新日期/Last Update:
2017-11-28