Erosion-corrosion of metals in multicomponent geothermal flows

Tomarov, G. V.; Shipkov, A. A.

doi:10.1134/s0040601506030049

Cited by 6 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although geothermal conditions in exploratory and production wells may often include the situations when the corrosive flows contain sufficient amounts of abrasive particles (e.g. sand and some others) or when the components are under continual rubbing by solid metals [61], the special wear-corrosion testing was not conducted in the present study. However, our previous works clearly demonstrated high resistance of boronised steels and cast irons under combined repetitive rubbing actions of steel bars in corrosive suspensions containing NaCl and other salts, acids and silica sand, as well as in the abrasive and erosive flows of silica-rich media [52,60,62].…”

Section: Discussionmentioning

confidence: 99%

Advanced iron boride coatings to enhance corrosion resistance of steels in geothermal power generation

Medvedovski¹

2020

Advances in Applied Ceramics

View full text Add to dashboard Cite

Iron boride coatings obtained by the CVD-based thermal diffusion process are proposed and evaluated for the first time for high-temperature corrosion and scaling conditions in geothermal power generation. The testing results in different corrosion environments are presented. The influence of structure and surface composition on the materials' performance is demonstrated. The dual-layer boride-based coatings successfully withstand the actions of high temperature/high pressure water and steam with a presence of H 2 S, CO + CO 2 , chlorides and hydrocarbons in simulating conditions and strong acidic environments. They demonstrated minimal scaling and corrosion when the materials were immersed into the modelling mixes of chloride salt solutions with SiO 2 or SiO 2 +Fe 2 O 3 at elevated temperatures and into the brine solution at boiling. These advanced ceramic coatings and technology should promote significant extension of the steels' service life in harsh geothermal-related corrosion environments.

show abstract

Section: Discussionmentioning

confidence: 99%

Advanced iron boride coatings to enhance corrosion resistance of steels in geothermal power generation

Medvedovski¹

2020

Advances in Applied Ceramics

View full text Add to dashboard Cite

show abstract

“…Carbon-and low-alloy steels are widely used in the geothermal industry for pipelines, casings and tubing [9]. In neutral-pH and moderately saline environments (94-1500ppm Cl -), carbon-and low-alloy steels are generally observed to be satisfactory [9] and erosion-corrosion rates can be comparable with stainless steels [10]. However, in low-pH conditions (pH 2-4) the corrosion rate can be as high as 322mm/yr in some geothermal environments [11].…”

Section: Introductionmentioning

confidence: 99%

A study on the erosion-corrosion behaviour of engineering materials used in the geothermal industry

Brownlie

Hodgkiess²,

Pearson³

et al. 2021

Wear

View full text Add to dashboard Cite

“…Corrosive wear is a significant problem for the utilization of components of equipment operating in an aggressive environment, such as reactors, tanks, heat exchangers, and pipelines in the chemical industry and geothermal power plants [1,2]. Basically, the alloys which can provide a specified resistant against corrosion in the aggressive environment are expensive.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Post-Weld Heat Treatment on the Microstructure of Inconel 625/Carbon Steel Bimetal Joint Obtained by Explosive Welding

Kosturek

Wachowski

Śnieżek

et al. 2019

Metals

View full text Add to dashboard Cite

Inconel 625 and steel P355NH were bonded by explosive welding in this study. Explosively welded bimetal clad-plate was subjected to the two separated post-weld heat treatment processes: stress relief annealing (at 620 °C for 90 min) and normalizing (at 910 °C for 30 min). Effect of heat treatments on the microstructure of the joint has been evaluated using light and scanning electron microscopy, EDS analysis techniques, and microhardness tests, respectively. It has been stated that stress relief annealing leads to partial recrystallization of steel P355NH microstructure in the joint zone. At the same time, normalizing caused not only the recrystallization of both materials, but also the formation of a diffusion zone and precipitates in Inconel 625. The precipitates in Inconel 625 have been identified as two types of carbides: chromium-rich M23C6 and molybdenum-rich M6C. It has been reported that diffusion of alloying elements into steel P355NH takes place along grain boundaries with additional formation of voids. Scanning transmission electron microscope observation of the grain microstructure in the diffusion zone shows that this area consists of equiaxed grains (at the side of Inconel 625 alloy) and columnar grains (at the side of steel P355NH).

show abstract

Erosion-corrosion of metals in multicomponent geothermal flows

Cited by 6 publications

References 1 publication

Advanced iron boride coatings to enhance corrosion resistance of steels in geothermal power generation

Advanced iron boride coatings to enhance corrosion resistance of steels in geothermal power generation

A study on the erosion-corrosion behaviour of engineering materials used in the geothermal industry

The Influence of the Post-Weld Heat Treatment on the Microstructure of Inconel 625/Carbon Steel Bimetal Joint Obtained by Explosive Welding

Contact Info

Product

Resources

About