A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-temperature corrosion behavior of Ni–50Cr coating deposited by high velocity oxygen–fuel technique on low alloy ferritic steel
Highlights HVOF Ni–50Cr coatings were performed on the surface of low ferritic steel substrate. The spraying parameters were optimized to obtain a dense six layer coating system. High temperature tests on air and air+CO2 were conducted at 550°C and 650°C. No presence of substrate degradation in the optimized Ni–50Cr coated specimens. Feasibility of increasing working temperature of coated ferritic steel up to 650°C.
Abstract Ni–50Cr coatings were deposited using the HVOF technique on low alloy ferritic steel (2.25Cr–1Mo) substrates to improve their performance in high temperature steam environments. Different thermal spray parameters were studied in order to optimize the corrosion resistance of the coatings. High temperature thermal tests at 650°C in different CO2 atmospheres (air with 0, 15 and 25vol.% CO2) and thermal cycling tests in air at 550°C and 650°C were conducted to study the effectiveness of the coating protection system. The uncoated specimens were severely corroded but no oxidation in the coated substrates was detected. A reduction of 10 times in terms of weight change per area unit in the coated steel was obtained after 360h of testing respect to that of the uncoated steel.
High-temperature corrosion behavior of Ni–50Cr coating deposited by high velocity oxygen–fuel technique on low alloy ferritic steel
Highlights HVOF Ni–50Cr coatings were performed on the surface of low ferritic steel substrate. The spraying parameters were optimized to obtain a dense six layer coating system. High temperature tests on air and air+CO2 were conducted at 550°C and 650°C. No presence of substrate degradation in the optimized Ni–50Cr coated specimens. Feasibility of increasing working temperature of coated ferritic steel up to 650°C.
Abstract Ni–50Cr coatings were deposited using the HVOF technique on low alloy ferritic steel (2.25Cr–1Mo) substrates to improve their performance in high temperature steam environments. Different thermal spray parameters were studied in order to optimize the corrosion resistance of the coatings. High temperature thermal tests at 650°C in different CO2 atmospheres (air with 0, 15 and 25vol.% CO2) and thermal cycling tests in air at 550°C and 650°C were conducted to study the effectiveness of the coating protection system. The uncoated specimens were severely corroded but no oxidation in the coated substrates was detected. A reduction of 10 times in terms of weight change per area unit in the coated steel was obtained after 360h of testing respect to that of the uncoated steel.
High-temperature corrosion behavior of Ni–50Cr coating deposited by high velocity oxygen–fuel technique on low alloy ferritic steel
López, A.J. (author) / Proy, M. (author) / Utrilla, V. (author) / Otero, E. (author) / Rams, J. (author)
2014-02-12
9 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2014
Electrochemical Corrosion Behavior of Different Grain Sized Cu-50Cr Alloy in Acidic Media
| British Library Online Contents | 2009
| British Library Online Contents | 2014
| British Library Online Contents | 1995