Non-phosphate Transition Metal Coatings

  • DR. DAVID CHALK
  • Published 2013

Abstract

INTRODUCTION Traditional iron phosphate and zinc phosphate conversion coatings have been used for more than a century as pretreatments for painting over a variety of metals. These “legacy” phosphate pretreatments have served well; however, environmental regulations restricting phosphate discharge, increased phosphate and zinc costs, and higher corrosion… (More)

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