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07001 AN INVESTIGATION INTO THE EFFECT OF SURFACE PROFILE ON THE PERFORMANCE OF COATINGS IN ACCELERATED CORROSION TESTS

Picture for 07001 AN INVESTIGATION INTO THE EFFECT OF SURFACE PROFILE ON THE PERFORMANCE OF COATINGS IN ACCELERA
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Product Number: 51300-07001-SG
ISBN: 07001 2007 CP
Author: Darren Ward
Publication Date: 2007
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It is well known in the protective coatings industry that the surface profile of the substrate can influence the performance of high build coatings which are used extensively in corrosive environments. It is common practice to specify an angular blast profile having an average peak height of between 40- 75 microns using chilled iron grit as the blast media. Peak height is not the only parameter which influences performance as the number of peaks per unit length can also affect coating performance. Both peak height and peak count can be varied with abrasive selection and their influence on coating performance can be evaluated. The following study will look into the influence of blasting media on the resulting surface profile, and evaluate the effect these parameters have on coating performance. Coating performance will be assessed using internationally recognized offshore coating test standards such as NACE TM0404, ISO 20340, ASTM B117 and ASTM D5894.
It is well known in the protective coatings industry that the surface profile of the substrate can influence the performance of high build coatings which are used extensively in corrosive environments. It is common practice to specify an angular blast profile having an average peak height of between 40- 75 microns using chilled iron grit as the blast media. Peak height is not the only parameter which influences performance as the number of peaks per unit length can also affect coating performance. Both peak height and peak count can be varied with abrasive selection and their influence on coating performance can be evaluated. The following study will look into the influence of blasting media on the resulting surface profile, and evaluate the effect these parameters have on coating performance. Coating performance will be assessed using internationally recognized offshore coating test standards such as NACE TM0404, ISO 20340, ASTM B117 and ASTM D5894.
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