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Corrosion Science
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#1Jiani Wang (Beihang University)
#2Ruiying Luo (Beihang University)H-Index: 16
Last.Guangyuan Cui (Beihang University)
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Abstract Herein, we demonstrate the influence of MoSi2 addition on mechanical properties and high-temperature oxidation resistance of Cf/SiC-MoSi2p composites, synthesized by precursor infiltration pyrolysis (PIP) method. The results reveal that the incorporation of MoSi2 reduced the number of open pores and cracks in the composites and the flexural strength and modulus are significantly improved. The flexural strengths of Cf/SiC-MoSi2p composites in parallel and perpendicular direction were rai...
ABSTRACT An iridium-based intermetallic material was fabricated at 1600 °C from the powdered mixture of tantalum, iridium, boron, and silicon carbide. The ternary phase Ta7Ir6B8 phase was formed with other refractory compounds including TaC, TaIr3, IrSi, and Ta3B4. The ablation resistance was evaluated at 2000 – 2100 °C. The ablation rate was 7·10-5 g/cm2·s and correlates well with the evaporation rate of Ta2O5. The first evidence of the ability of the ternary Ta7Ir6B8 phase to withstand severe ...
#1Jaewon LeeH-Index: 1
Last.Sung Jin Kim (SNU: Sunchon National University)H-Index: 1
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ABSTRACT To understand the cut-edge corrosion behaviors of Zn-Al-Mg alloy-coated steel better, mechanistic studies with a Zn-MgZn2 eutectic specimen fabricated by a hot-pressing process were conducted using various electrochemical methods, such as the scanning vibrating electrode technique and galvanic corrosion measurements. The results showed that the MgZn2 phase dissolved preferentially with the galvanic current flowing from the phase to Zn. Mg/Zn cations from the dissolving MgZn2 phase were ...
#1Ignatiev Victor (Kurchatov Institute)
#2Surenkov Aleksandr (Kurchatov Institute)
Abstract In molten salt reactor fissile material is dissolved in the molten salt fluorides mixture and it serves both as fuel and coolant in the primary circuit. The voltammetric technique was used for measurements of the redox potential in molten LiF-BeF2-UF4 salt mixture with tellurium addition at temperatures up to 800 °C. The results show that corrosion for high nickel alloys under consideration strongly correlate with the fuel salt temperature and its chemistry control (impurities, fission ...
#1Xueda Li (China University of Petroleum)H-Index: 3
#2Jiahang Liu (China University of Petroleum)
Last.Ning Cao (China University of Petroleum)
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Abstract Microstructures consisted of bainite/ferrite matrix and varied distribution of martensite-austenite (M-A) constituent in the heat-affected zone of X100 pipeline steel were simulated, and their effect on stress corrosion cracking (SCC) mechanism in acidic soil environment were investigated. The results showed that microstructure characteristic, especially distribution of M-A constituent, had large effect on SCC sensitivity. Micro-galvanic effect, stress/strain concentration and hydrogen ...
#1Valérie Parry (CNRS: Centre national de la recherche scientifique)H-Index: 8
#2Audrey Col (CNRS: Centre national de la recherche scientifique)H-Index: 1
Last.Céline Pascal (CNRS: Centre national de la recherche scientifique)H-Index: 7
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Abstract The effect of a pre-straining on oxidation resistance of a low stacking fault energy austenitic stainless steel, Fe-17.5Cr-8.1Ni, was investigated at 830 °C in O2 for 12 days. A decrease of the oxidation rate has been observed compared to the as-received material. For the first hours of oxidation, the martensitic deformed zone was transformed into numerous fine grains supplying a network of Cr fast diffusion paths. The high density of oxide nucleation sites related to the reverted marte...
#1Reza Jafari (TMU: Tarbiat Modares University)H-Index: 1
#2Esmaeil Sadeghi (University College West)H-Index: 1
Abstract The high-temperature corrosion of high velocity air-fuel (HVAF) thermal spray Ni21Cr, Ni5Al, and Ni21Cr7AlY coatings was investigated at 600 °C for 168 h in ambient air under KCl and 50-50 mol% KCl–K 2 SO 4 salts. Chlorination-oxidation cycle and breakdown of the corrosion products layer were the dominant corrosion mechanism in the chromia-forming Ni21Cr and Ni21Cr7AlY coatings exposed to KCl. KCl–K 2 SO 4 was less corrosive to the chromia-forming coatings as K 2 SO 4 was less reactive ...
#1Lei FanH-Index: 3
#2Lei Fan (CNPC: China National Petroleum Corporation)
Last.Fuhui WangH-Index: 51
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Abstract The corrosion behavior of Ti60 alloy coated with solid NaCl layer in dry O2 and humid O2 (30.8 vol.% H2O) environments at 600 °C have been investigated. The isotopic tracing of 18O showed involvement of H2O in both the outer corrosion layer (OCL) and the inner corrosion layer (ICL). Theoretical calculations revealed that H2O provided 14% and 21% of the oxygen required for the formation of the outer and inner corrosion layers, respectively. Detailed analysis of corrosion products reveale...
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