Non-metallic inclusions-their quantitative extraction from Steel

This paper describes the various chemical methods developed for the separation of oxides in steel. The chlorination and alcoholic-iodine methods have been described in detail. A simple form of apparatus more adaptable to ordinary chemical laboratory conditions has been set up by the authors and has given agreeable results on oxide inclusions. Results of X-ray analysis of the inclusion residue are also included. Total oxygen results by the alcoholic-iodine method agree well with those obtained by vacuum fusion analysis. (Mr. D.S. Tandon, Senior Scientific Officer and Mr. J.R. Gupta, Junior Scientific Assistant, National Metallurgical Laboratory)