The cost and availability of rare earth-based corrosion inhibitors

Book chapter (2014)

Authors

A.E. Hughes CSIRO Materials Science and Engineering

J.M.C. Mol OLD Metals Processing, Microstructures and Properties

IS Cole CSIRO Materials Science and Engineering

Research Group

OLD Metals Processing, Microstructures and Properties

Corrosion Availability Supply and demand Inhibitors Rare earths Conversion coatings Metal finishing

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Published Date

2014

Language

English

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Research Group

OLD Metals Processing, Microstructures and Properties

Abstract

Rare earths have been studied extensively as corrosion inhibitors for a range of metals. However, there is little information about the viability of the rare earths as inhibitors from the perspective of price and availability. This chapter reveals that from a price perspective, Ce and La are competitive with V and cheaper than Mo, but more expensive than Ti and Zr compounds. In terms of availability La, Ce, Nd and Pr are relatively plentiful, but production volumes fall far short of that required to replace chromium inhibitors. Nd and Pr are nearly ten times more expensive than either Ce or La.