引用本文:王继东,王智慧.等离子喷涂CeO2-Y2O3稳定ZrO2陶瓷涂层耐高温铁水热震研究[J].中国表面工程,2010,(3):10~13
WANG Ji-dong,WANG Zhi-hui.The Thermal Molten Iron Resistance Performance of Plasma Sprayed ZrO2 Stability of CeO2-Y2O3 Ceramic Coating[J].China Surface Engineering,2010,(3):10~13
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等离子喷涂CeO2-Y2O3稳定ZrO2陶瓷涂层耐高温铁水热震研究
王继东,王智慧
北京工业大学,材料科学与工程学院,北京,100124
摘要:
采用等离子喷涂方法在304不锈钢表面制备NiCoCrAlY2O3/(ZrO2+25%CeO2+3%Y2O3)耐高温涂层,模拟铸造模具表面的工作环境,涂层在1350 ℃铁水液中加热热震和在炉中大气环境下加热热震后,对涂层组织结构和物相变化进行了对比研究.结果表明:涂层在铁水中热震后,涂层内部的大量裂纹交联在一起,在陶瓷层与粘结层界面靠近陶瓷层一侧出现尺寸近10 μm宽的裂纹,陶瓷层中的部分四方相向单斜相和立方相转变,铁水中部分元素与陶瓷元素发生了扩散并生产新相.
关键词:  等离子喷涂  热震性能
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The Thermal Molten Iron Resistance Performance of Plasma Sprayed ZrO2 Stability of CeO2-Y2O3 Ceramic Coating
WANG Ji-dong,WANG Zhi-hui
College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124
Abstract:
The NiCoCrAlY2O3/(ZrO2+25% CeO2+3% Y2O3) ceramic coating was prepared on the surface of 304 stainless steel, working environment of casting die was simulated and thermal shock resistance of coating was studied under the conditions of heating in the 1350 ℃ molten iron and the air, then reaching the organization structure and performance. The experimental results showed that, after thermal shock in molten iron, lots of cracks in the ceramic have been cross linked, the size of nearly 10 μm wide crack can be observed near the side of the ceramic coating of the ceramic coating and bond coating interface, part of the tetragonal ceramic transited into monoclinic phase and cubic phase, some elements of molten iron and ceramic have been diffused and produced a new phase in the coating.
Key words:  plasma spray  CYSZ  thermal shock resistance
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