The experiment research of corrosion behaviour about Ni-based alloys in simulant solution containing H2S/CO2

The influence of temperature on the corrosion resistance of 10# carbon steel for refinery heat exchanger tubes

“…Most researches at home and aboard are focused on the external protection methods including on-line monitoring methods, corrosion inhibitors and various coatings [11][12][13][14]. Deep researches about the corrosion behavior and mechanism of refinery heat-exchangers tubes in this environment have been seldom discussed but which are beneficial to the choosing of reliable protective methods.…”

“…The corrosion perforation and scaling of tubes are the main reasons for this kind of heatexchanger failure due to the existence of plenty of Ca 2+ , Mg 2+ and Cl − in the shell side medium [4][5][6][7]. A lot of methods are adopted to inhibit the corrosion of equipments, such as the preparation of protective coating [8][9][10], the addition of corrosion inhibitor [11,12] and the material upgrading [13,14] and so on. However, the corrosion rate of heat-exchanger tubes every year is still very considerable.…”

Investigation of the deterioration of passive films in H2S-containing solutions

“…The presence of the metallic states of iron indicates that the passive film is thinner in comparison with the film formed under natural gas conditions [24]. The S 2p 3/2 spectrum was fitted with one doublet with S 2p 3/2 at a binding energy of 161.7 eV and one singlet peak component at 167.84 eV corresponding to 2 The XPS results show a decreasing trend of Fe content in the passive film in the corrosion process. This decreasing trend is attributed to the fact that Fe 2 O 3 is less stable than Cr 2 O 3 .…”

“…Banas et al [14] found that CO 2 could stimulate the dehydroxylation of the outer part of the oxide film. Liang et al [15] found that the surface film was composed of Cr 2 O 3 , MoO 3 , FeS, FeS 2 , Fe(OH) 2 , and FeO after immersing the sample in a sulfate-reducing bacteria medium.…”

Electrochemical and Sulfide Stress Corrosion Cracking Behaviors of Tubing Steels in a H2S/CO2 Annular Environment

“…Considerable effort has been exerted to study the effects of environmental aspects, material characteristics, and corrosion scales on sulfide stress corrosion cracking (SSCC) in oil and gas wells, where CO 2 and H 2 S coexist (Ref [1][2][3][4][5][6]. However, most reports focus on the internal corrosion (Ref 7,8) of tubular and pipeline steels during the exploitation and transportation of oil and gas, and limited attention has been directed toward studies on H 2 S/CO 2 corrosion under an annular environment between tubing steel and casing steel.…”