He got his Master degree and PhD from HIT in 2001 and 2006, respectively. Generally, the MAO technique is a universal and efficient method by tailoring the electrical parameters and electrolyte compositions to enhance the thermal protection of metallic TPS and high efficient thermal dissipation of power devices. When the radiation from a flame strikes a perfect radiator, all of the energy is absorbed, but most importantly, it is transformed into “black body radiation”, as the wide waveband form. High infrared emissivity ceramic coatings for protection of metallic thermal protection systems (TPS) are urgently needed in reusable launch vehicles (RLVs). These ceramic coatings are composed of R-TiO2, A-TiO2, Al2SiO5 and SiC phase as well as amorphous phase. Moreover, to further improve the thermal emission of ceramic coatings, a new MAO coating incorporated with SiC particles was developed for the first time on Ti2AlNb alloy in a Na2SiO3 basic electrolyte. He was conferred the Second prize in Natural Science Award of Heilongjiang Province in 2011. He joined the faculty of Materials Science and Engineering at HIT in 1994. Surface and Coatings Technology, volume 294 (2016) pages 102-108. Zhan-Guo Liu received his BS degree from Harbin Institute of Technology (HIT) in 2003. Is your fired heater limited by bridge wall temperature or firing duty? An emissivity of 0.20 implies that the material radiates only 20% of that which it is capable of radiating. [4] Y.M. Cetek Ceramic Coatings, however, with emissivity values above 0.9, have been designed specifically to supplement the radiation characteristics of the refractory surfaces. Wang, Y.C. [2] Z.W. Ouyang, D.C. Jia, Y. Zhou. He is now focusing on elevated temperature thermal protective ceramic coatings, bioceramic coatings and new energy ceramics. By using this website, you agree to the use of these cookies in accordance with our Privacy Policy. CO2 emissions are reduced proportionately with the productivity benefits. High emissivity surfaces are able to radiate energy across a broad wavelength band lessening the interference of the CO2 and H2O in the flue gas. He received his BS (1988) from Wuhan University of Technology, MS (1991) and PhD (1994) in materials science from HIT, China. The typical reduction in NOx emissions in steam methane reformers is 20% to 30%, irrespective of burner type. The measurement system employs a PbS detector, in conjunction with a sensitive galvanometer. Wang, Y. Liu, J.L. Xu, L.X. His current research interests include advanced ceramics and composites, advanced surface engineering, tribomaterials, and rare-earth energy materials. The effect is to “superheat” the furnace atmosphere, or flue gas, resulting in wasted energy lost to the stack. Their work was recently published in peer-reviewed journal, Applied Surface Science. We observed a statistically significant positive correlation between the amount of ceramic-bearing fibers added to the fabric and the increase in emissivity. Tables of emissivity values are only approximated values for … The exact emissivity of a material should be determined when In their work, high emissivity ceramic coatings incorporated with SiC have been successfully formed on Ti2AlNb alloy by microarc oxidation. Most materials, however, have relatively uniform emissivity throughout the wavelength range in which thermal imagers operate. For some heaters, we recommend process tube coatings. Emissivity is a measure of a material’s radiating efficiency. Wang, Y.M. There is no loss of friable fiber from radiant sections and therefore no fouling of radiant section tubes/catalyst tubes, convection section tubes, screens of SCR (Selective Catalytic Reduction) units, or loss to the environment, through the stack. He holds 13 patents and a book chapter entitled “Plasma electrolytic oxidation of aluminium and titanium alloys”. Cetek High Emissivity Ceramic Coatings provide improved efficiency of radiant heat transfer from refractory surfaces in tubular fired heaters. Guo. It has now become an accepted means of improving the efficiency of radiant heat transfer, leading to energy savings as well as environmental and reliability benefits. Ouyang, Y. Zhou, D.C. Jia, L.X. Research and development have been critical to IGS for over 30 years. The chemical composition, microstructure and emissivity enhancement mechanisms of MAO ceramic coatings incorporated with or without SiC particles were investigated. Guo, J.H. They tend not to handle radiation in the most efficient way. Therefore it is more readily available to heat the load in the furnace. Wang, H. Tian, X. E. Shen, L. Wen, J.H. Journal of Alloys and Compounds, volume 745 (2018) pages 271-281. \��A���K�>�1���EQ��4����wv>�L���Q}��2�9�@�9{(Ԯ�������@�F�b���

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