Recent Developments in Corrosion Resistant Non-ferrous Metals and Alloys

Abstract

The imporatance of iron and its alloys has resulted in the classification of all the other metals and their alloys as non-ferrous. The later vary widely in their properties and the mechanism of corrosion resistance. Parameters important for the resistance are : physical, chemical, electrochemical, thermodynamic and metall-urgical. The corrosion reaction is primarily electro-chemical and the basic kinetic principles are now rela-tively well understood. The reaction rates, of course, are difficult to predict, being highly dependent upon the nature of the environment, surface, and metallurgical factors. Corrosion control, therefore, remains largely empirical. High strength and are also costly. Research and development on alloys, consequently, dominate the recent literature. The present paper reviews the significant developments from 1966.