...Sukhjiinder Singh; Khushdeep Goyal; Rakesh Bhatia Purpose The main cause of boiler tube failure in high-temperature thermal power plants is molten sulphate-vanadate-induced hot corrosion. Applying thermal spray coatings on alloy steels can reduce hot corrosion. This study aims to examine...

... protected. Originality/value To the best of the authors’ knowledge, no other study has analyzed the protection mechanism and effect of zinc as sacrificial anode in H₂S-containing environments under high temperature at present. Xiaoyang Xuan can be contacted at: xuanxy@sunrui.net 18...

...Khushdeep Goyal; Davinder Singh; Harvinder Singh; Charanjit Singh Purpose This paper aims to investigate the high temperature corrosion behaviour of ZrO₂-reinforced Cr₂O₃ matrix-based composite coatings on ASTM-SA213-T-22 steel at 900°C in molten salt environment...

...Wei Liu; Zhiping Zhou; Zhaolin Li; Mingxing Li; Qiongwei Li; Zhengrong Ye; Jinxing Yao; Xiankang Zhong Purpose This paper aims to investigate the high-temperature mechanical properties of HS110S steel and its corrosion behaviors in harsh downhole environment. Design/methodology/approach...

...Sandeep Kumar; Rakesh Bhatia; Hazoor Singh Purpose In Indian thermal power plants, the main cause of boiler tube failure is the presence of molten sulphates and vanadates, which deteriorate the tube material at high temperatures. To combat the hot corrosion failure of metals, thermal spray...

.... Design/methodology/approach Coatings of copper-aluminum alloy powder at different contents (Wt.% = 50%, 60%, 70% and 80%) were prepared by the high-temperature heat treatment process. The microstructure and component of the coatings were characterized by scanning electron microscope, X-ray diffraction...

...Chunmei Ma; Songting Yang; Yuheng Zhang; Kaikun Wang; Huadong Fu Purpose Due to the special service environment of superalloys, this paper aims to obtain effects of temperature and Ti addition on high temperature oxidation behavior of Co-Al-W-B alloys. Design/methodology/approach Isothermal...

...Vikramjit Singh; Khushdeep Goyal; Rakesh Goyal Purpose This paper aims to investigate the hot corrosion behavior of Ni-Cr and Cr3C2-NiCr coatings, deposited on T11, P91 boiler steels by detonation gun spray coating (D-Gun) process to enhance high temperature corrosion resistance. Design...

... Figure 3 Corrosion rate of type 304L SS measured in boiling 65% nitric acid Corrosion Electrochemistry Metallurgy High temperature Nuclear The separation of uranium and plutonium from the fission products is accomplished by adopting the well-known “Plutonium Uranium Recovery...

...Somrerk Chandra-Ambhorn; Neramit Krasaelom; Tummaporn Thublaor; Sirichai Leelachao Purpose This study aims to apply the pack cementation to develop the Fe-Al layers on the surface of FC 25 cast iron in order to increase the high-temperature corrosion resistance of the alloy. Design/methodology...

... simulation of high temperature and high pressure environment immersion testing. The electrochemical behavior was studied by potentiodynamic polarization, electrochemical impedance spectroscopy, scanning Kelvin probe microscopy (SKP). Moreover, the corrosion products were analyzed by X-ray photoelectron...

...Khushdeep Goyal; Hazoor Singh; Rakesh Bhatia Purpose Molten sulphate-vanadate induced hot corrosion is the main reason of failure of boiler tubes used at high temperatures in thermal power plants. The hot corrosion can be encountered by applying thermal spray coatings on the alloy steels...

... behaviours; this phenomenon is controlled by the thermal stresses experienced by the samples during heating and cooling cycles. Originality/value The material is obtained from the production of electrolytic copper, and during its reprocessing practices at high temperature, it was thought that it could...

...Q. Wan; Y.M. Chen; H.D. Liu; B. Yang Purpose Ti-Si-N coating with nanocomposite structure is a promising protective coating for cutting tools which will be subject to high temperature oxidation during service. This study aims to investigate the thermal stability of Ti-Si-N coatings and lays...

... deposited with the help of Plasma spray process. Design/methodology/approach To better understand the effect of CNT reinforcement on oxidation resistance, high-temperature oxidation behaviour of conventional Al₂O₃, 1.5 Wt.% CNTs-Al₂O₃, 2 Wt.% CNTs...

...) calculation is shown in Figure 2 . Mass change with respect to exposure time for the bare alloy exposed at 900°C with 5 per cent V₂O₅ in salt mixture gives 1/n = 0.593, which is approximately 2, and hence, it follows the parabolic rate constant. High temperature Corrosion...

... (Qu et al., 2009 ; Chikh et al., 2005 ; Rauscher et al., 1993 ; Amin and Ibrahim, 2011). Many research studies on high-temperature acid corrosion inhibitors have indicated that acetylenic alcohols, aromatic aldehydes, quaternary ammonium salts and Mannich bases can...

...Dr Cathy Liu; Hongliang Zhang; Fang Zhang; Wei Su; Ya Jiang; Yuchun Li Purpose – The purpose of this paper was to evaluate corrosion resistance of superheater T91 material based on high temperature corrosion experiments with a condensate environment. Design/methodology/approach...

... at: serdarkarakas@yahoo.com © Emerald Group Publishing Limited 2014 Corrosion Materials High temperature Coatings and linings Chemical treatment Optical and SEM images of the borided AISI 304 stainless steel are shown in Figure 2 . The SEM images (Figure 2) revealed a boride layer...

... exposure time was 2,000 h at 650°C under 1 bar pressure. Findings – Due to the research, it was found that plasma nitriding process is detrimental for the protection of high-temperature structured materials; the high concentration and high activity of Cr produced a CrN phase. This phase is not stable...