MICROSTRUCTURAL EVALUATION OF PLASMA-SPRAYED ZIRCONIA COATINGS

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SADEGHI FADAKI SEYED ALI; VALEFI ZIAE; ZANGENEH MADAR KARIM

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Journal: Journal of Advanced Processes in Materials Engineering Year:2015 | Volume:9 | Issue:1 (32) Page(s): 89-99

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Title

MICROSTRUCTURAL EVALUATION OF PLASMA-SPRAYED ZIRCONIA COATINGS

Author(s)

SADEGHI FADAKI SEYED ALI | VALEFI ZIAE | ZANGENEH MADAR KARIM | Issue Writer Certificate

Keywords

MICROSTRUCTUREQ1

POROSITYQ2

UNMELTED PARTICLESQ2

PLASMA SPRAYQ2

ZIRCONIA COATINGQ2

Abstract

In this study, ZIRCONIA COATINGs have been prepared by atmospheric PLASMA SPRAYing under different parameters in air on mild carbon steel substrates. The effects of spraying parameters; powder feed rate and spraying distance (SD), on MICROSTRUCTURE of 8wt%Y2O3-rZrO2 (YSZ) coatings were studied. Measurements were made on specimens in the as- sprayed state. The MICROSTRUCTUREs of coatings were analyzed by optical microscopy (OM) and scanning electron microscopy (SEM). Phase analyses of the YSZ powder/coatings were examined by X-ray diffractometer (Rigaku, Tokyo, Japan) operating with Cu Ka and the size and amount of their POROSITY were evaluated using an Image Analysis method. The results showed by varying spray distance/ powder feed rate, significant changes were detected in the MICROSTRUCTURE of the top coat. The total POROSITY, pore morphology and UNMELTED PARTICLES are correlated with the powder feed rate and spray distance. Also, It was found that the powder feed rate has a larger effect on the coating MICROSTRUCTURE than the spray distance in the conditions investigated.

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APA: Copy

SADEGHI FADAKI, SEYED ALI, VALEFI, ZIAE, & ZANGENEH MADAR, KARIM. (2015). MICROSTRUCTURAL EVALUATION OF PLASMA-SPRAYED ZIRCONIA COATINGS. ADVANCED PROCESSES IN MATERIALS, 9(1 (32)), 89-99. SID. https://sid.ir/paper/172564/en

Vancouver: Copy

SADEGHI FADAKI SEYED ALI, VALEFI ZIAE, ZANGENEH MADAR KARIM. MICROSTRUCTURAL EVALUATION OF PLASMA-SPRAYED ZIRCONIA COATINGS. ADVANCED PROCESSES IN MATERIALS[Internet]. 2015;9(1 (32)):89-99. Available from: https://sid.ir/paper/172564/en

IEEE: Copy

SEYED ALI SADEGHI FADAKI, ZIAE VALEFI, and KARIM ZANGENEH MADAR, “MICROSTRUCTURAL EVALUATION OF PLASMA-SPRAYED ZIRCONIA COATINGS,” ADVANCED PROCESSES IN MATERIALS, vol. 9, no. 1 (32), pp. 89–99, 2015, [Online]. Available: https://sid.ir/paper/172564/en

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