Electrochemical Characteristics of Lanthanum Hexaboride in the Environments Containing S2-

Shu Qi Zheng; Chang Feng Chen; Rui Jing Jiang; Dan Ni Wang

doi:10.4028/www.scientific.net/MSF.663-665.473

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Electrochemical Characteristics of Lanthanum Hexaboride in the Environments Containing S^2-

Abstract:

In the environment with H2S/CO2 or Na2S, the corrosion behavior of Lanthanum hexaboride (LaB6) was investigated by electrochemistry methods. The results indicated that the corrosion potential (Ecorr) and Rf of LaB6 increased as the partial pressure of H2S increased, while the corrosion current density (Icorr) decreased. In the environment containing Na2S, as the content of Na2S increased, the corrosion potential (Ecorr) and Rf of LaB6 decreased, while the corrosion current density (Icorr) increased. Thus, the addition of H2S into the environment with H2S/CO2 would inhibit the corrosion of LaB6; while in the environment containing Na2S, the increasing of the content of Na2S would accelerate the corrosion of LaB6.