Optimisation of metallic pigments in coatings by an electrochemical technique and an investigation of manganese powder as pigment for metal rich primers

Selvaraj, M.; Guruviah, S.

doi:10.1016/0300-9440(95)00609-5

Cited by 32 publications

(3 citation statements)

References 3 publications

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“…Because flaky bronze powder is traditionally manufactured through ball-milling process and then its metallic reflection is very hard to improve due to its uneven thickness, irregular boundary and much surface defects. For bronze metallic pigment, both thickness and smoothness of flaky bronze particles are crucial to high metallic reflection [2][3][4][5][6][7][8][9][10]. Usually, the favorable thickness is in the range of 30-50 nm [1].…”

Section: Introductionmentioning

confidence: 99%

Growth of Cu/Zn Alloy Films Sputtered on Flexible Acrylic Resin-Coated PET Substrates

Xie

Chen

2011

Integrated Ferroelectrics

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Cu/Zn alloy films were DC-sputtered on flexible acrylic resin-coated PET substrates and the effect of sputtering condition on the morphology and growth rate of Cu/Zn alloy films were investigated. It is found that long sputtering time, low voltage and large target-tosubstrate distance can lead to smooth and uniform films. Chamber pressure must be well controlled at several Pascal. High voltage, short target-to-substrate distance and media chamber pressure can improve the growth rate of Cu/Zn alloy films. The suitable DC sputtering condition is 1.6 kV of voltage, 25 mm of target-to-substrate distance, 10 Pa of chamber pressure and 20 min of sputtering time, under which the as-prepared Cu/Zn alloy films possess of smooth surface and 41 nm of thickness.

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Section: Introductionmentioning

confidence: 99%

Growth of Cu/Zn Alloy Films Sputtered on Flexible Acrylic Resin-Coated PET Substrates

Xie

Chen

2011

Integrated Ferroelectrics

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“…For organic coating, the PVC/CPVC ratio is the most important parameter used in design of coating properties (23). The effect of PVC on the corrosion protective properties of metal rich coatings has been studied extensively (21,(24)(25)(26)(27)(28)(29)(30). PVC of zinc-rich coatings is normally designed to be above CPVC to provide cathodic protection.…”

Section: Introductionmentioning

confidence: 99%

Cathodic Corrosion Protection Performance of Mg-Rich Primers: Effect of Pigment Shape and Pigment Volume Concentration

et al. 2010

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In analogy to Zinc-rich coatings technology, Mg-rich primers (MgRPs) have been developed to protect Al alloys, particularly Al 2024-T3. Pigment shape and pigment volume concentration are two important parameters for metal rich coatings and their role in Mg-rich coatings was examined. Two magnesium pigments, spherical Mg 1-11 and irregular shape Mg 3820, were formulated in Mg-rich coatings at different PVC levels. Pigment shape and particle size and were characterized by scanning electron microscopy (SEM), and particle size distribution (Accusizer 780a), respectively. Critical pigment volume concentration (CPVC) values were predicted by the methods of Bierwagen & Johnson(1, 2) , and were experimentally verified via fluorescence microscopy and SEM. Polarization curves, open circuit potential (OCP) and scanning vibrating electrode technique (SVET) characterized cathodic protection properties of MgRPs. It has been found that most MgRPs provided cathodic protection to Al alloys except for some low PVC MgRPs. These MgRPs were topcoated and then placed in Neutral Salt Spray chamber, and it is seen that Mg 1-11 coatings had less blistering than Mg 3820 coatings.

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“…In our earlier work we have optimized the metallic pigments such as zinc and manganese in organic and inorganic media by the polarization method [6]. Similarly the present work has optimized the critical pigment volume concentration (CPVC) of the stainless steel pigment in epoxy-polyamide media.…”

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confidence: 98%

Stainless steel powder as a protective and decorative pigment for steel structures in organic coating industries

Selvaraj

1997

Anti-Corrosion Methods and Materials

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In recent years a new metallic pigment was brought to the attention of paint formulators, namely stainless steel. The stainless steel pigmented coatings show much greater resistance to abrasion than the other metallic pigmented coatings. This pigment is used as a major pigment as well as a component of any multipigment systems for both protective and decorative coatings. Attempts to optimize the pigment in epoxy-polyamide medium by a polarization method. Evaluates the protective behaviour of optimized coating on mild steel by mechanical, accelerated and electrochemical methods. Studies the surface morphology of the primer by scanning electron microscopy (SCM). The electrochemical behaviour of the coating showed that the coating gave a very high order of resistance for longer duration in sodium chloride solution and also the metallic solution. Finds that the resistances produced by the polarization method and impedance method are well comparable for metallic powder pigmented coatings on steel structure in chloride solution.

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Optimisation of metallic pigments in coatings by an electrochemical technique and an investigation of manganese powder as pigment for metal rich primers

Cited by 32 publications

References 3 publications

Growth of Cu/Zn Alloy Films Sputtered on Flexible Acrylic Resin-Coated PET Substrates

Growth of Cu/Zn Alloy Films Sputtered on Flexible Acrylic Resin-Coated PET Substrates

Cathodic Corrosion Protection Performance of Mg-Rich Primers: Effect of Pigment Shape and Pigment Volume Concentration

Stainless steel powder as a protective and decorative pigment for steel structures in organic coating industries

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