The Effect of Ni-Al2O3 Nanocomposite Coatings on the Wear and Corrosion Resistance and Thermal Diffusivity of 316 Stainless Steel Plates of Heat Exchangers

Shamshirsaz, Mohsen; Fereidoon, Abdolhossein; Albooyeh, Alireza; Danaee, I.

doi:10.1007/s11665-022-07242-0

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…Various ceramic fillers, such as Al 2 O 3 [98], TiO 2 [99], SiC [100], and ZrO 2 [101], have been used to enhance wear and corrosion resistance in coating systems. These insoluble particles play a crucial role in reducing corrosion-induced damage by impeding the propagation of corrosion features [67]. Ceramic coatings offer significant promise for safeguarding geothermal heat exchangers, particularly due to their effective corrosion protection in highly corrosive environments.…”

Section: Protective Coating Systemsmentioning

confidence: 99%

Corrosion and Scaling in Geothermal Heat Exchangers

Penot,

Martelo,

Paul

2023

Applied Sciences

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Geothermal power is an attractive and environmentally friendly energy source known for its reliability and efficiency. Unlike some renewables like solar and wind, geothermal energy is available consistently, making it valuable for mitigating climate change. Heat exchangers play a crucial role in geothermal power plants, particularly in binary cycle plants, where they represent a significant portion of capital costs. Protecting these components from deterioration is essential for improving plant profitability. Corrosion is a common issue due to direct contact with geothermal fluid, which can lead to heat exchanger failure. Additionally, temperature changes within the heat exchanger can cause scaling, reduce heat transfer efficiency, or even block the tubes. This review critically examines the challenges posed by corrosion and scaling in geothermal heat exchangers, with a primary focus on three key mitigation strategies: the application of corrosion-resistant alloys, the utilization of protective coating systems, and the introduction of anti-scaling agents and corrosion inhibitors into the geothermal fluid. The paper discusses recent strides in these approaches, identifying promising advancements and highlighting impending obstacles. By bridging existing knowledge gaps, this review aims to offer valuable insights into material selection, heat exchanger design, and the progression of geothermal energy production. Ultimately, it contributes to the ongoing endeavor to harness geothermal energy as a sustainable and enduring solution to our energy needs.

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Section: Protective Coating Systemsmentioning

confidence: 99%

Corrosion and Scaling in Geothermal Heat Exchangers

Penot,

Martelo,

Paul

2023

Applied Sciences

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“…Stainless steel is known as a metallic material with high corrosion resistance. In addition to corrosion resistance, stainless steel exhibits excellent mechanical properties, high-temperature properties, and workability [1,2]. Therefore, stainless steel has a wide range of applications and is used in a very wide range of fields, including machine parts, chemical industry parts, aerospace parts, construction materials, medical instruments, and consumer products.…”

Section: Introductionmentioning

confidence: 99%

Effects of Thermomechanical Treatments on Tensile Properties of Pure Titanium

Harada,

Ogawa,

Aoki

2023

MSF

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In order to increase strength while maintaining the ductility of material, pure titanium was improved through the thermomechanical treatment that combines rolling and heat treatment. The tensile properties of pure titanium treated by rolling and heating were investigated. Test material was JIS Grade 2. This material has a higher corrosion resistance. However, the strength of JIS Grade 2 is lower than that of JIS Grade 3. JIS Grade 2 with high strength while maintaining corrosion resistance is being developed. Techniques for improving the properties of materials with simple compositions are important. Thermomechanical treatment is used as a method for improving material properties. In the present study, the effect of thermomechanical treatment on the material properties of JIS Grade 2 was investigated. Rolling was performed at room temperature and the reduction ratio ranged from 70 to 90 %. The heating temperature was in the range of 300 to 700 °C. Heat treatment from 400 to 500 °C showed an increase in tensile strength while maintaining ductility. When the heat treatment temperature was 450 °C, the strength and elongation were approximately 600 MPa and 25 %. Tensile stress of JIS Grade 4 and the tensile strain of JIS Grade 1 were exhibited.

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