EVALUATION OF MICROSTRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MULTILAYER ZIRCONIA COATING ON API5L STEEL IN CONDITION OF SINGLE AND MULTITIME COOKING

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JAFARI MARYAM; KALANTAR MEHDI; GHASEMI SEYED SADEGH; KEYVANI AHMAD

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Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2017 | Volume:12 | Issue:30 Page(s): 1-13

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Title

EVALUATION OF MICROSTRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MULTILAYER ZIRCONIA COATING ON API5L STEEL IN CONDITION OF SINGLE AND MULTITIME COOKING

Author(s)

JAFARI MARYAM | KALANTAR MEHDI | GHASEMI SEYED SADEGH | KEYVANI AHMAD | Issue Writer Certificate

Keywords

ZIRCONIA COATINGQ2

SOL GELQ2

MICROSTRUCTUREQ2

PHASE COMPOSITIONQ2

CORROSION RESISTANCEQ2

Abstract

The aim of this study is applied zirconia sol-gel coatings on steel substrate API5L to evaluate the effect of number of layer and type of sintering on the CORROSION RESISTANCE of these coatings. For this purpose the 4 and 2 layer zirconia SOL GEL coating using zirconium propoxide as a precursor was applied on API5L carbon steel by dipping method at constant speed 6 cm/min in sol. A group of samples for each cycle of immersion, drying at 110oC for 30 min and sintering for 1h at 450oC, while others group with repeated cycle of dipping+drying, the coating was applied to the desired number of layers and the sintering was accomplished at 450oC for 1h. Before sintering the thermal analysis of TG-DTA was completed in order to determined to the optimum temperature of gel calcinations or sintering of coated samples. The coating film of zirconia was characterized by FTIR, DTA, XRD and SEM. Properties of coated samples evaluated by measurement of microhardness and electrochemical tests. The results indicate for heat treatment at 550oC mixtures of the monoclinic and tetragonal phases and 450oC crystallization of tetragonal phase. multi-level sintering for both 4 and 2 layer more homogeneous MICROSTRUCTURE, the CORROSION RESISTANCE and microhardness is higher than one level sintering. Regardless the type of the sintering, properties of the coating 4 layer is better than the 2 layer.

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APA: Copy

JAFARI, MARYAM, KALANTAR, MEHDI, GHASEMI, SEYED SADEGH, & KEYVANI, AHMAD. (2017). EVALUATION OF MICROSTRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MULTILAYER ZIRCONIA COATING ON API5L STEEL IN CONDITION OF SINGLE AND MULTITIME COOKING. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, 12(30), 1-13. SID. https://sid.ir/paper/121050/en

Vancouver: Copy

JAFARI MARYAM, KALANTAR MEHDI, GHASEMI SEYED SADEGH, KEYVANI AHMAD. EVALUATION OF MICROSTRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MULTILAYER ZIRCONIA COATING ON API5L STEEL IN CONDITION OF SINGLE AND MULTITIME COOKING. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2017;12(30):1-13. Available from: https://sid.ir/paper/121050/en

IEEE: Copy

MARYAM JAFARI, MEHDI KALANTAR, SEYED SADEGH GHASEMI, and AHMAD KEYVANI, “EVALUATION OF MICROSTRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MULTILAYER ZIRCONIA COATING ON API5L STEEL IN CONDITION OF SINGLE AND MULTITIME COOKING,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. 12, no. 30, pp. 1–13, 2017, [Online]. Available: https://sid.ir/paper/121050/en

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