Nickel flakes make conductive coatings
A
Hart Coating Technology product story
Edited by the Engineeringtalk editorial team
Jun 1, 2004
New grades of nickel flake are ideally suited for application techniques such as screen-printing where there is a limit to the size of flake particle than can be tolerated.
Over the past 25 years Novamet's nickel flake products have achieved a first class reputation for performance and reliability.
The electrically conductive HCA-1 Grade has become the material of choice for high performance coatings in RFI/EMI shielding applications.
Nickel fine leafing and nickel fine water decorative grades, on the other hand, are used in wet paint and powder coatings systems to provide a rich, lustrous, yellow-tinged appearance, not dissimilar to that of silver.
The excellent inherent corrosion resistant properties of nickel ensure durability of the coatings and also allow these pigments to be used in aqueous formulations.
As a further benefit, all Novamet nickel pigments exhibit different, but consistent, degrees of ferromagnetism - an increasingly sought-after property.
One of the key factors contributing to the reliable performance of these materials has been the close control of particle size distribution that Novamet consistently achieve in regular production.
Further recent refinements to the corporation's processing technology has led to the introduction of modified grades of three of the regular products - HCA-1 Conductive, Nickel Fine Leafing and Nickel Fine Water Flakes.
These new materials contain significantly lower amounts of larger size flakes making them ideally suited for application techniques such as screen-printing where there is a limit to the size of flake particle than can be tolerated.
These unique and novel pigments - manufactured by Novamet Specialty Products Corp at its Wyckoff, New Jersey, USA plant - are distributed in the UK, Belgium, Denmark, Finland, Holland, Ireland and Luxembourg by Hart Coating Technology from its base in the West Midlands, UK.
Dr Tony Hart, of Hart Coating Technology, feels that these modified grades of Novamet nickel flake will increase the range of applications for specialised nickel pigments.
"This represents yet another significant improvement to an existing and well established product range by providing a combination of properties that will open up further applications in important and growing areas of new technology", he comments.
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