Dr., O. P. Modi and Dr., M N Munagole and Dr., R P Singh and Dr., K P Singh (1985) CORROSION OF 2.25CR-1MO FERRITIC STEEL IN SULPHURIC ACID AND SEA WATER. British Corrosion Journal.

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Abstract

THE CORROSION BEHAVIOR OF 2.25CR-1MO FERRITIC STEEL IN DIFFERENT CONCENTRATIONS (0.05-5N) OF SULFURIC ACID AND IN SEA WATER HAS BEEN STUDIED BY POTENTIODYNAMIC POLARIZATION MEASUREMENTS AT SCAN RATES OF 45 MV MIN(SUPER -1). THE EXPERIMENTS WERE PERFORMED ON STEELS IN TWO DIFFERENT CONDITIONS, COLD WORKED AND ANNEALED AT 850 C FOR 2 H IN VACUUM (0.1 PA), AND THE EFFECT OF MICROSTRUCTURE WAS ALSO ANALYZED. THE ANNEALED SAMPLES SHOW BETTER CORROSION RESISTANCE THAN COLD WORKED ONES, IN BOTH SULFURIC ACID AND SEA WATER. THE PASSIVATION CURRENT, PASSIVATION POTENTIAL, AND CORROSION CURRENT ALL INCREASE WITH INCREASING ACIDITY, WHILE THE CORROSION POTENTIAL DECREASES. THE EFFECT OF SULFURIC ACID CONCENTRATION IS MORE PRONOUNCED AT CONCENTRATIONS UP TO 2N. THE PRESENT RESULTS ARE COMPARED WITH AVAILABLE LITERATURE DATA FOR IRON AND IRON-CHROMIUM ALLOYS WITH DIFFERENT CR CONTENTS IN SULFURIC ACID MEDIA. NO PASSIVATION WAS OBSERVED IN SEA WATER. TERMS: M--(U)COUNTRY INDIA, ENGINEERING STEEL, 2. MCIC--JOURNAL ARTICLES 25CR-1MO STEEL, CORROSION, SULFURIC ACID, SEA WATER, POTENTIODYNAMIC STUDY, COLD WORKING, ANNEALING, VACUUM ENVIRONMENT, MICROSTRUCTURE, CORROSION POTENTIAL, PASSIVATION, POLARIZATION, GRAIN SIZE, CORIA

Item Type:	Article
Subjects:	Lightweight Materials
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	08 Aug 2013 07:00
Last Modified:	08 Aug 2013 07:00
URI:	http://ampri.csircentral.net/id/eprint/237

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