High Temperature Corrosion of Spray-Atomized FeAl (40at.%) Based Alloys:Immersed in a Molten Salt Mixture of V2O5-Na2SO4 Academic Article

abstract

• ABSTRACTWe studied the high temperature corrosion of spray atomized and deposited FeAl40at% based intermetallic alloys immersed in a molten salt mixture of 80%V2O 5+20%Na2SO4 (wt%) over the temperature range of 600900C. Experiments were realized by the weight loss method and the potentiodynamic polarization electrochemical technique in three different samples: FeA140at%, FeA140+0.lat%B and FeA140+0.lat%B+10at%A12O3. Measurements of weight loss and corrosion current density as a function of the molten salts temperature were obtained and discussed in terms of the passive layer morphology and corrosion products formed during the tests. It was found that the iron aluminide doped with boron and reinforced with alumina particulate was more corrosion resistant in the test temperature range. The weight loss experiments revealed that at 700C all alloys developed maximum corrosion rate. This behavior was related with the dissolution of protective oxide layer on metal base due the formation of vanadate phases which are highly corrosive at this temperature.

authors

• Lavernia Borrego, Enrique

published proceedings

• MRS Advances

author list (cited authors)

• Amaya, M., Lavernia, E. J., & Martinez, L.

complete list of authors

• Amaya, M||Lavernia, EJ||Martinez, L

publication date

• 1998

publisher

• Springer Nature  Publisher

published in

• MRS Advances  Journal

keywords

• 40 Engineering
• 4017 Mechanical Engineering

Digital Object Identifier (DOI)

• 10.1557/proc-552-kk4.9.1

start page

• kk4.9.1

volume

• 552

URL

• http://dx.doi.org/10.1557/proc-552-kk4.9.1