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The Effect of Pre-Oxidation Parameters on the Corrosion Behavior of AISI 441 in Dual Atmosphere [PDF]
International Journal of Hydrogen Energy, 2018 Dual atmosphere conditions have been shown to be detrimental for the ferritic stainless steel interconnects used in solid oxide fuel cells (SOFC) under certain conditions.
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Carbonization of pre-oxidized polyacrylonitrile fibers
Carbon, 2008The microstructural evolution, elemental composition and gas releasing character of preoxided poly-acrylonitrile (PAN) fibers during continuous carbonization were investigated by Raman spectroscopy, XRD, XPS and TG-MS. Results indicate that the sp2 C—C bond length, crystal size and graphitization degree increase.
Yue-Fang Wen +5 more
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Leaching of Pre-Oxidated Pyrargyrite with Na2S2O5
2020Recently, Mexico has established itself as the largest producer of silver in the world; however, the minerals extracted have a very complex mineralogy. Pyrargyrite presents problems of leaching with cyanide. For this reason, the effect of oxidation with metabisulfite prior to leaching with cyanide is studied.
Vicente Gonzáles Martínez +7 more
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Pre-oxidation and coagulation of textile wastewater by the Fenton process
Chemosphere, 2002This paper evaluates the Fenton process, involving oxidation and coagulation, for the removal of color and chemical oxygen demand (COD) from synthetic textile wastewater containing polyvinyl alcohol and a reactive dyestuff, R94H. The experimental variables studied include dosages of iron salts and hydrogen peroxide, oxidation time, mixing speed and ...
Shyh-Fang, Kang +2 more
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The effect of pre-oxidation on NDMA formation and the influence of pH
Water Research, 2014N-nitrosodimethylamine (NDMA), a probable human carcinogen, is a disinfection by-product that has been detected in chloraminated drinking water systems. Pre-oxidation of the NDMA precursors prior to chloramination can be a viable approach for water utilities to control the NDMA levels. This study examined the effects of (i) commonly used oxidants (i.e.,
Meric, Selbes +2 more
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Pre-Oxidized Copper and Alumina Bonding
1991In the course of a general investigation of the particular case of the copper-alumina bonding Transmission Electron Microscopy (TEM) has been used to follow the interfacial reactions through a detailed characterization of compounds at the metal-ceramic interface.
Claude Esnouf, Daniel Treheux
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Pre-oxidation of AlN substrates for subsequent metallization
Journal of Materials Science: Materials in Electronics, 2015To introduce a surface oxide layer onto aluminum nitride substrate helps its subsequent metallization. In the present study, the oxidation behavior of AlN substrate is investigated. The pre-oxidized AlN substrate is then bonded to a copper plate. The oxide layer of the substrate is porous, and its presence degrades thermal diffusivity and flexural ...
Chun-Ting Yeh, Wei-Hsing Tuan
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Investigation of the thermal behaviour of pre-oxidation coal in deep mines
Environmental Science and Pollution Research, 2023As mining continues to increase in depth, the problem of pre-oxidation coal (POC) spontaneous combustion (PCSC) in deep mines is coming to the fore. The effects of thermal ambient temperature and pre-oxidation temperature (POT) on the thermal mass loss (TG) and heat release (DSC) characteristics of POC were studied.
Huiyong, Niu +3 more
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Effect of potassium permanganate pre-oxidation on AOC
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011Potassium permanganate was selected in studying the variation of AOC in preoxidation process. AOC was increased by 61.5% with the increase of oxidant dosages after coagulation. The AOC was increased by 23.6% only in preoxidation before coagulation. Permanganate preoxidation increased the substrate available for strain P17.
Tao Liang +3 more
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Influence of Pre-Oxidation on the Morphology of Mesocarbon Microbeads
Key Engineering Materials, 2016Mesocarbon microbeads (MCMB) were prepared from medium coal tar pitch by hot-treatment under certain conditions. The TG, SEM, EDX, Laser Particle Size Analysis and XRD methods were used to characterize the MCMB. The results have been shows that the pre-oxidation treatment before carbonization has a considerable effect on the morphology of MCMB ...
Ya Ming Zhu +4 more
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