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Corrosion Studies
Published in P.J. Gellings, H.J.M. Bouwmeester, Electrochemistry, 2019
In general, the study of high-temperature corrosion in aggressive environments has intensified over the last 20 years. The reason is that the demands upon the more efficient use of natural sources, such as coal, oil, and gas are increasing.
Waste-to-Energy Combustion
Published in D. Yogi Goswami, Frank Kreith, Energy Conversion, 2017
Charles O. Velzy, Leonard M. Grillo
The balance of the plant equipment is similar to that used in fossil-fuel-fired boiler facilities. However, there are differences. Thus, the combustion of MSW produces a highly corrosive environment for boiler tube materials. Metal chlorides are believed to be primarily responsible for boiler tube corrosion problems.40 The most important factors in high temperature corrosion are metal temperature, gas temperature, temperature gradient between gas temperature and metal temperature, deposit characteristics, and temperature fluctuations.1 For this reason, boiler tubes are generally fabricated using corrosion-resistant alloys. Boiler tube shields or weld overlay cladding of boiler tubes with inconel are also used in highly corrosive/erosive areas.40
The study of Cr3C2-25NiCr and 35WC-Co/65NiCrBSi-based HVOF coatings for high-temperature erosion resistance application
Published in Tribology - Materials, Surfaces & Interfaces, 2022
K. Raghavendra Naik, R.K. Kumar, V. Saravanan, S. Seetharamu, P. Sampathkumaran
Now coming to NiCrBSi coatings, they are very popular for elevated temperature wear, erosion and corrosion applications as they provide good resistance against wear, impact, fatigue and corrosion at elevated temperature and are comparatively cheaper [17]. The presence of boron (B) and carbon (C) in the alloy promotes the formation of hard boride and carbide phases which results in excellent wear and erosion resistance. Chromium and nickel provides high-temperature corrosion resistance to the alloy. Boron and silicon act as self-fluxing agents. Many investigators [18–24] revealed that the wear behaviour of NiCrBSi coatings has drastically improved both at room and elevated temperatures. Further, it is reported [25,26] that the addition of hard reinforcement particulate such as WC,NBC, Cr3C2, TiC, SiC, VC and WC-Ni to NiBSi matrix resulted in improved wear performance.
High-temperature wear behaviour of HVOF sprayed 65% (NiCrSiFeBC)−35% (WC–Co) coating
Published in Surface Engineering, 2020
Gagandeep Singh, Manpreet Kaur
NiCrSiFeBC coatings are very popular for elevated temperature wear and corrosion applications as they provide good resistance against wear, impact, fatigue, and corrosion at elevated temperatures and are comparatively cheaper [8]. The presence of boron (B) and carbon (C) in the alloy promotes the formation of hard boride and carbide phases which results in excellent wear resistance. Chromium and Nickel provide high-temperature corrosion resistance to the alloy. Boron and silicon act as self-fluxing agents [9–13]. Furthermore, many investigators like Gonzalez et al. [14], Rodriguez et al. [15], Serres et al. [16], Guo et al. [17] and Zikin et al. [18] investigated the wear behaviour of NiCrSiFeBC coatings at room temperatures and at elevated temperatures on different steel substrates and reported the enhanced performance of coated specimens.