Inhibitor properties of “green” pigments for paints

Bethencourt, M.; Botana, Francisco; Marcos, M.; Osuna, R.; Sánchez-Amaya, J.M.

doi:10.1016/s0300-9440(03)00013-4

Cited by 108 publications

(50 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By 2006, among the new nontoxic anticorrosive pigments, which were introduced as substitutes for traditional pigments, zinc phosphate has probably been the most widely accepted and it was incorporated in many paint formulations 3,7 . The toxicity level of this compound is 50 time less than chromates 1,5,19,20 . Although zinc phosphate gives good results, in certain cases, it is proved to have lower corrosion inhibition than zinc chromate 17,21 .…”

Section: Introductionmentioning

confidence: 92%

Potency of ZnFe2O4 Nanoparticles as Corrosion Inhibitor for Stainless Steel; the Pigment Extract Study

et al. 2017

View full text Add to dashboard Cite

The corrosion inhibition of nanoparticulates zinc ferrite (NZF) pigment was studied. The steel samples were immersed in the NZF pigment extract in 3.5 wt. % NaCl. Electrochemical tests such as electrochemical impedance spectroscopy (EIS) and polarization as well as surface analysis were employed to evaluate the effect of NZF on the steel corrosion. The concentration of Zn and Fe in the pigment extracts before and after immersion of mild steel samples was evaluated by inductively coupled plasma-optical emission spectrometry (ICP-OES). EIS results in total agreement with results of polarization test demonstrated superiority of NZF as an anticorrosion pigment. In the case of samples exposed to NZF extract, the higher resistance and lower double layer capacitance extracted from impedance spectra as well as lower current density from polarization results might be attributed to precipitation of an inhibitive layer on the surface. This was also supported by SEM/EDS and ICP-OES results.

show abstract

Section: Introductionmentioning

confidence: 92%

Potency of ZnFe2O4 Nanoparticles as Corrosion Inhibitor for Stainless Steel; the Pigment Extract Study

et al. 2017

View full text Add to dashboard Cite

show abstract

“…On the other hand, corrosion inhibition efficiency calculated for AZP was relatively high, i.e., 49% (Table 4) (1%). 24 It should be noted that these fillers [AZP and that tested in reference (24)] were mainly based on Zn 3 (PO 4 ) 2 exhibiting high anticorrosion efficiency. 24 The corrosion rates of steel immersed in aqueous extracts of APs have not generally been presented and discussed in literature.…”

Section: Phosphate Fillersmentioning

confidence: 99%

“…24 It should be noted that these fillers [AZP and that tested in reference (24)] were mainly based on Zn 3 (PO 4 ) 2 exhibiting high anticorrosion efficiency. 24 The corrosion rates of steel immersed in aqueous extracts of APs have not generally been presented and discussed in literature. However, anticorrosion efficiency of epoxy coatings containing the mentioned filler (measured during cyclic corrosion test) was ca.…”

Section: Phosphate Fillersmentioning

confidence: 99%

Preparation and characterization of anticorrosion polyurethane paints and coatings based on novel Zn-free phosphates

2014

View full text Add to dashboard Cite

Novel aluminum ammonium phosphates (AAP) were tested as anticorrosion fillers in twocomponent solventborne polyurethane paints. Their properties were compared with microsized aluminum zinc phosphate (AZP) as well as with nanosized (nAP) and microsized (AP) aluminum phosphates. Generally, coating compositions containing AAP exhibited similar or slightly higher viscosity than the systems with AZP and AP. Moreover, cured polyurethane coats with AAP reached higher gloss and better adhesion to a steel substrate. The results of salt spray tests (2500 h) showed that anticorrosive properties of coats containing 10 wt% of AAP were similar or better than those noted for coats with 15.6 wt% of AZP or 13.7 wt% of AP. Electrochemical impedance spectroscopic tests revealed markedly higher barrier properties of coats with AAP in comparison to an AP-based sample.

show abstract

“…Chromate compounds are effective conventional pigments, which enhance the passivation of steel surfaces and can work over a wide RESOURCES PROCESSING pH range. However, chromate pigments are toxic materials that should be replaced by eco-friendly pigments with the same protective ability [17][18][19] . Various pigments such as CS and mixtures thereof, zinc phosphate, and iron oxide proved to be good choices due to their high anticorrosive and non-toxic properties [20][21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

Characterization of Calcium-doped Silica Gel Prepared in an Aqueous Solution

Quang

Park²,

Kim³

et al. 2012

Resources Processing

View full text Add to dashboard Cite

In this study, calcium-doped silica was prepared by modifying sodium silicate-based silica gel in an aqueous solution of Ca(OH)2. Silica gels with less than 1 mm in size with different pH values were treated in Ca(OH)2 solution at concentrations ranging from 2 to 20 g/L and aged at 25, 60, and 90°C for 40 min. The BET surface area of the silica gel decreased while its pore size increased considerably after modification in Ca(OH)2 solution. The pH of 5% calcium-doped silica in water ranged from about 8.5 to 10, depending on the pH of silica gel, the aging temperature, and the concentration of the Ca(OH)2. When the concentration of the Ca(OH)2 solution was 20%, needle-like crystals of calcium silicate hydrate formed over the surface of silica gel.

show abstract

Inhibitor properties of “green” pigments for paints

Cited by 108 publications

References 9 publications

Potency of ZnFe2O4 Nanoparticles as Corrosion Inhibitor for Stainless Steel; the Pigment Extract Study

Potency of ZnFe2O4 Nanoparticles as Corrosion Inhibitor for Stainless Steel; the Pigment Extract Study

Preparation and characterization of anticorrosion polyurethane paints and coatings based on novel Zn-free phosphates

Characterization of Calcium-doped Silica Gel Prepared in an Aqueous Solution

Contact Info

Product

Resources

About