Multi-element-resolved electrochemical corrosion analysis. Part I. Dissolution behavior and passivity of amorphous Fe50Cr15Mo14C15B6

Abstract

a b s t r a c tMulti-element dissolution analysis of amorphous Fe 50 Cr 15 Mo 14 C 15 B 6 in 0.1 M H 2 SO 4 was investigated electrochemically and by coupled online mass spectrometry. We fully discuss the most important aspects of the application of the newly-developed methodology to study complex multi-elemental alloys. The resulting partial dissolution rates of Fe, Cr and Mo reflect the passive behavior and are compared to the measured total current density as function of time. The deviations between the added elemental dissolution currents and the measured total current density are discussed. Furthermore, the inferred growth of oxide thickness was correlated to results obtained from surface analysis.

Wear behavior and corrosion properties of Fe-based thin film metallic glasses

“…The thickness of the passive film formed on the Fe-based TFMG is estimated to be around 1.20 nm, which is relatively thicker than that on 304SS alloy (δ sc =0.96nm). The magnitude of the thickness of the passive film is close to the experimentally measured value of the passive film thickness on Fe-based BMG by XPS analysis [56] . On this ground, the formation of a thicker passive film on Fe-based TFMG also provide greater protective ability to obstruct the permeation of aggressive ions into the oxide-film and thus leads to superior passivity stability, compared to 304SS alloy.…”

Atomic Emission Spectroelectrochemistry: Real-Time Rate Measurements of Dissolution, Corrosion, and Passivation

“…18 Their technique was first developed by Homozava, et al, [19][20][21] and further developed by Ott, et al [22][23][24] Their technique involved a noncontinuous operation in which aliquots were taken and analyzed at regular intervals. Continuous in-line experiments have been conducted using ICP-MS in particular using a scanning droplet cell (SDC) as developed at the Max Planck Institute in Düsselorf by Klemm, et al [25][26][27][28] Using either the SDC or a conventional flow cell, ICP-MS has been used to investigate the corrosion of Mg, Al, and Ni alloys, [29][30][31][32][33][34] the kinetics of the degradation of heterogeneous catalysts, [26][27][35][36][37][38] and to detect partial currents during anodization. [39][40][41][42][43][44] Recently, Lopes, et al, 45 moved away from the flow cell technique to directly sample the electrolyte in the vicinity of a rotating disk electrode with transfer to an ICP-MS to investigate the dissolution of Pt single crystals.…”

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

“…Many studies concerning the corrosion behaviour of Fe-based metallic glasses and coatings have been conducted in recent years [30][31][32]34,40,[43][44][45][46][47][48][49][50][51]. One of the most promising Fe-based amorphous formulations, namely SAM2X5, has been developed by Farmer and co-workers [30][31][32].…”