Fabrication and characterization of YSZ/Al2O3 nano-composite coatings on Inconel by electrophoretic deposition. Issue 17 (10th July 2017)

• Record Type: Journal Article
• Authors: Khanali, Omid; Baghshahi, Saeid; Rajabi, Masoud
• Is Part Of: Journal of materials research. Volume 32:Issue 17(2017)
• Page Start: 3402
• Page End: 3408
• Publication Date: 2017-07-10
• Subjects: electrophoretic deposition, -- yttria stabilized zirconia, -- alumina, -- aluminum, -- Inconel; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2017.258
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : Nano-structured yttria stabilized zirconia (YSZ)/Al2 O3 nano-composite coatings were prepared by electrophoretic deposition (EPD) in acetyl-acetone/ethanol solvents under the constant voltage of 40 V. High sintering temperature may damage the metal parts and also lead to high production costs. To overcome the disadvantages of high sintering temperatures, reaction bonding of Al was taken as the approach. It was found that a powder mixture of Al and YSZ can lower the sintering temperature. YSZ/Al green composites were deposited on the MCrAlY layer applied on Inconel alloy cathode. Iodine was added to the solutions as the stabilizing agent. According to differential thermal analysis (DTA) results, embedded Al particles oxidation started at 660 °C. Sintering process for YSZ/Al2 O3 nano-composite coating occurred at 1150 °C for 4 h. A lower pinholes coating with the highest density due to the constraint of the substrate was obtained.