Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance

Abdalla, Khalid; Rahmat, Azmi; Aziz, Azizan

doi:10.1007/s11998-012-9423-9

Cited by 18 publications

(13 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Effects Of Additives (Cations Nanoparticles) On the Propertmentioning

confidence: 92%

“…Copper also refined the crystal structure and enhanced the coverage of the surface significantly [53]. This was attributed to the effect of CU-Fe galvanic couple on dissolution of iron and acceleration of crystal deposition [53]. Leoni [54] revealed that the addition of copper to the phosphating bath led to a drastic reduction in the corrosion rate.…”

Section: Effects Of Additives (Cations Nanoparticles) On the Propertmentioning

confidence: 98%

See 1 more Smart Citation

Modified Zinc Phosphate Coatings: A Promising Approach to Enhance the Anti-Corrosion Properties of Reinforcing Steel

al-Swaidani¹

2017

MOJCE

View full text Add to dashboard Cite

Section: Effects Of Additives (Cations Nanoparticles) On the Propertmentioning

confidence: 92%

Section: Effects Of Additives (Cations Nanoparticles) On the Propertmentioning

confidence: 98%

Modified Zinc Phosphate Coatings: A Promising Approach to Enhance the Anti-Corrosion Properties of Reinforcing Steel

al-Swaidani¹

2017

MOJCE

View full text Add to dashboard Cite

“…Before the immersion of PU/ ZnPh coatings, the observed gloss was in the range of 78°-102°, which decreased to the range of 73°-89°after immersing the samples in the salt solution. Even after immersing the samples, the blistering phenomenon was not prominent to the hybrid coatings, probably because of the presence of an IPDI cyclic Figure 6 Corrosion test the of PU/ZnPh-coated panels before immersion in 3.5% NaCl ring, which could have contributed in improving the coating toughness (Nabih et al, 2013;Abdalla et al, 2013;Saha et al, 2013).…”

Section: Gloss Reduction Studymentioning

confidence: 99%

Fabrication of renewable myristic acid based polyurethane nano zinc phosphate hybrid coatings to mitigate corrosion of mild steel

Rajput

Patil

Gite

2018

PRT

View full text Add to dashboard Cite

Purpose The present study aims to demonstrate the use of renewable source in the preparation of polyurethane (PU) coatings and mitigation of corrosion of mild steel using nano zinc phosphate. Results indicated improvement in the properties of the PU coatings, especially anticorrosive properties by the addition of nano zinc phosphate. Design/methodology/approach Renewable-source-based polyestermyristamide polyol was synthesized using myristic acid as a starting material. The synthesis of polyol was carried by amidation as well as by esterification by a one-pot route. The structure of the prepared polyestermyristamide was confirmed with the support of end-group analysis and spectral study. PU coatings were prepared from synthesized polyestermyristamide polyol and used to protect metal substrate against corrosion. Corrosion properties of the prepared PU were found to be lower; hence, to improve the performance of these coatings, nano zinc phosphate was added to the coatings. The nano zinc phosphate was synthesized in the laboratory by reported sonication method and analyzed for morphology by scanning electron microscopy. Performance of coatings was studied with respect to effect of percentage nano zinc phosphate on thermal stability, mechanical properties and chemical resistances of PU coatings. Findings The combination of zinc phosphate nano rods and particles in myristic acid-based PU coatings provided substantial corrosion barrier properties to the coatings. Different per cent of the synthesized zinc phosphate nano rods and particles were loaded into the matrix, and corresponding coatings were estimated for corrosion resistance, thermal and chemical properties. Immersion study of the coated panels in 3.5 per cent NaCl solution showed good corrosion resistance for both PU coatings containing 2 and 3 per cent nano zinc phosphate. Practical implications This paper has provided the solution to replace existing petroleum-based raw materials with myristic acid as a renewable source in preparing PU coatings. Conventional coatings act as physical barriers against aggressive species but do not have ability to perform as permanent impassable to corrosive species. Hence, nano-sized zinc phosphate is used as corrosion inhibitor in to the synthesized PU coatings for enhancing anticorrosive performance. Originality/value In the paper, polyesteramide polyol is synthesized using renewable-source-based material, i.e. myristic acid to replace existing petroleum-based acid as a greener approach. Normally, vegetable oils are preferred as they have such kinds of polyols. The polyesteramide reaction is one pot that avoids the extra steps required in the synthesis. Further, it has been found that the pristine renewable coatings are unable to fully protect subtract from corrosion, whereas an addition of the nano-size zinc phosphate has enhanced the corrosion properties of the coatings.

show abstract

“…Coating deposition time was also decreased to 47% on average. Abdalla et al 53 used copper acetate as a novel additive for zinc-phosphate primers on mild steel surface. Before phosphating, they treated the samples in copper acetate solution for 5 s. It was found that this copper-treatment refined the crystal structure and enhanced the coverage of the surface significantly.…”

Section: Effect Of Bath Additivesmentioning

confidence: 99%

Anticorrosive interfacial coatings for metallic substrates

Rahimi¹,

Potrekar²,

Dutta³

et al. 2013

Surface Innovations

View full text Add to dashboard Cite

The present state-of-the-art in anticorrosive coatings technology is a multistep process where multilayered hybrid coatings are applied on metallic substrates with each layer having certain functionality and properties. These layers are mainly an interfacial layer, such as inorganic phosphate coatings and/or sol-gel hybrid coatings, which are accompanied by a paint/polymer topcoat. While the main characteristic of the polymer topcoat is a "barrier" role to prevent the diffusion of corrosive species to the metal surface, the primer or the first layer in contact with metal surface is of significant importance due to its role in "active" corrosion prevention capability and promotion of strong adhesion between the substrate surface and subsequent layers. In this article, recent developments in processing and functional properties of zinc-phosphate sacrificial primers and sol-gel-based hybrid coatings will be overviewed. Finally, some of the innovative advancements in this area developed by this research group and others will also be discussed.

show abstract

Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance

Cited by 18 publications

References 21 publications

Modified Zinc Phosphate Coatings: A Promising Approach to Enhance the Anti-Corrosion Properties of Reinforcing Steel

Modified Zinc Phosphate Coatings: A Promising Approach to Enhance the Anti-Corrosion Properties of Reinforcing Steel

Fabrication of renewable myristic acid based polyurethane nano zinc phosphate hybrid coatings to mitigate corrosion of mild steel

Anticorrosive interfacial coatings for metallic substrates

Contact Info

Product

Resources

About