Abstract
Hydrogen solubility in pure iron and iron based binary alloys have been measured in the temperature range 20 to 500° C under hydrogen at atmospheric pressure. For pure iron, hydrogen solubility decreases as the temperature decreases until about 300° C and then increases reaching maximum at 80° C. The maximum solubility at this temperature was about 0.9 ppm. This large value is thought to result from chemisorption of hydrogen at the grain boundary. The addition of alloying elements, Mo, W and Ni increased the temperature at which hydrogen solubility had its maximum and had no other effects on the trend of hydrogen solubility change as a function of temperature for pure iron. The higher heats of chemisorption of hydrogen onto Mo and W compared with Fe may be responsible for the change in temperatures. Other possible methods of trapping hydrogen in iron and iron based binary alloys are discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
