High-Performance Coating Materials

Sugama, T.

doi:10.2172/909954

Cited by 1 publication

(3 citation statements)

References 39 publications

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“…In geothermal systems, this mechanism has been observed in the form of hydrothermal oxidation in fluoroelastomer bearings [40,41] and protective paints. [42,14] Degradation is in this case due to the attack of oxygen to the primary polymer chain structure, with consequent formation of components of lower molecular weight, acting as sites for cracks initiation/propagation.…”

Section: Corrosionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…[9] However, the selection of such resistant alloys has two major drawbacks: a) cost, translating into increased capital cost and b) the strong affinity to scale formation of the passive layer that forms on their surface after exposure to geothermal fluid. [14] Significant reductions in both capital and O&M costs can instead be achieved by replacing some (or all) of the most expensive component materials with more economical ones coated with corrosion-, erosion, and scaling-resistant coatings. [15] In this way, together with a reduction in material cost, improved component lifetime and maintenance schedule can be achieved.…”

Section: Introductionmentioning

confidence: 99%

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Research and Development on Coatings and Paints for Geothermal Environments: A Review

Fanicchia,

Karlsdottir

2023

Adv Materials Technologies

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Geothermal power plants are complex systems, where the interplay between different metallic components transforms the enthalpy of hot brine in the form of electricity or usable heated water. The naturally occurring variety in brine chemistry, linked to the presence of specific key species, and its thermo‐physical properties, leads to the development of different power plant configurations. Key species and power plant configuration in turn determine the extent of damage experienced by each component in the power plant: erosion, corrosion, and/or scaling, often acting combined. Paints and coatings, compared to changing the component alloy, have represented a preferred solution to mitigate these issues due to advantages in terms of costs and repairability. This is reflected in the large number of publications on research and development in this area within the past ≈50 years, with even an increasing trend in the past 10–20 years, indicating the strong interest to develop this clean and sustainable energy source. Therefore, in this work, the first of its kind after 1980, an in‐depth review of all published work on research performed on paints and coatings for geothermal applications, subdivided by the material system, is provided.

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