Calcium Nitrate And Sodium Phosphate
Effect of Sodium Phosphate and Calcium Nitrate Sealing Treatment on Microstructure and Corrosion Resistance of Wire Arc Sprayed Aluminum Coatings
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Section of Architectural Engineering, Hanyang Academy, 1271 Sa three-dong, Sangrok-gu, Ansan 15588, Korea
2
Section of Chemistry, Sri Baldeo Post Graduate College-Baragaon, Mahatma Gandhi Kashi Vidyapeeth University, Varanasi 221204, India
3
Intelligent Construction Automation Center, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Korea
4
Innovative Durable Building and Infrastructure Research Center, Section of Architectural Applied science, Hanyang University, 1271 Sa 3-dong, Sangrok-gu, Ansan 15588, Korea
five
Ceremonious Engineering Section, College of Engineering, Prince Sattam Bin Abdul-Aziz University, Al-Kharaj 11942, Saudi Arabia
*
Authors to whom correspondence should be addressed.
Received: 28 Nov 2019 / Revised: 23 December 2019 / Accepted: 29 December 2019 / Published: 1 January 2020
Abstract
Aluminum coating was deposited past arc thermal spraying process onto the steel substrate for the corrosion protection in aggressive environment. However, the arc thermal sprayed blanket possesses defects in the coating. Thus, information technology is important to reduce the defects and enhance the corrosion resistance properties of the deposited coating using mail-handling. In the present study, nosotros accept used different concentrations of sodium phosphate mono bones (NaH2PO4) with 0.1 molar (M) calcium nitrate [Ca(NOiii)2] as mail service-treatment solution to fill up out the defects of the Al coating. It was observed by scanning electron microscopy (SEM) that one K NaH2PO4 with 0.1 M Ca(NO3)2 treated sample exhibited 71% reduction in defects compared to as coated samples. X-ray diffraction (XRD) was performed to determine the phases formed on the coating surface after treatments. XRD confirms the formation of sodium aluminum hydrogen phosphate (NaiiiAl(OH)(HPOfour)(PO4)) and brushite (Ca(HPO4)(H2O)two) as composite oxides on the Al blanket. Electrochemical results show that 0.5 K NaHiiPO4 with 0.ane M Ca(NOiii)two treated sample has exhibited the highest charge transfer resistance and the lowest corrosion electric current density after 89 days of exposure in 3.5 wt.% NaCl solution. The enhancement in corrosion resistance of 0.five Yard NaHiiPO4 with 0.1 M Ca(NO3)two treated sample attributed to the formation of adherent, sparingly soluble, and stable corrosion products. The book fraction result of the corrosion products formed on 0.5 M NaH2PO4 with 0.1 One thousand Ca(NO3)2 treated sample afterward 89 days of exposure in three.five wt.% NaCl using XRD confirms the highest amount of Bayerite (α-Al(OH)iii) deposition, thus, the corrosion rate of this sample was the lowest. View Full-Text
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MDPI and ACS Style
Lee, H.-S.; Kumar, A.; Mandal, Due south.; Singh, J.K.; ASLAM, F.; Alyousef, R.; Albduljabbar, H. Consequence of Sodium Phosphate and Calcium Nitrate Sealing Treatment on Microstructure and Corrosion Resistance of Wire Arc Sprayed Aluminum Coatings. Coatings 2020, 10, 33. https://doi.org/10.3390/coatings10010033
AMA Fashion
Lee H-S, Kumar A, Mandal S, Singh JK, ASLAM F, Alyousef R, Albduljabbar H. Result of Sodium Phosphate and Calcium Nitrate Sealing Handling on Microstructure and Corrosion Resistance of Wire Arc Sprayed Aluminum Coatings. Coatings. 2020; 10(one):33. https://doi.org/10.3390/coatings10010033
Chicago/Turabian Style
Lee, Han-Seung, Ashutosh Kumar, Soumen Mandal, Jitendra Kumar Singh, Fahid ASLAM, Rayed Alyousef, and Hisham Albduljabbar. 2020. "Result of Sodium Phosphate and Calcium Nitrate Sealing Handling on Microstructure and Corrosion Resistance of Wire Arc Sprayed Aluminum Coatings" Coatings x, no. 1: 33. https://doi.org/10.3390/coatings10010033
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