Preparation of B-Site Doped Lanthanum Aluminate Infrared Radiation Ceramic Material with Sol-gel Method AITranslate
Abstract AITranslate
LaAlO3 infrared radiation ceramic materials doped with Fe ion and Fe-Ni ions in B site were prepared with sol-gel method.The doped LaAlO3 samples were characterized and analyzed by XRD,FTIR,SEM,IR-2,XPS and other means.The results show that all the doped products are perovskite type complex oxides.The infrared emissivity is increased but the increment is small after Fe doping,and the infrared radiation properties are obviously improved after Fe-Ni co-doping.When the doping content of Fe^3＋is 0.25,the infrared emissivity within 3~5μm waveband increases from 0.345 to 0.821.The physical mechanism of the enhancement of infrared emissivity is as follows.There are two compensation mechanisms including the generation of oxygen vacancy and the change of chemical valence after B-site doping.The chemical valence change can produce small polarons from Ni ^3＋Ni 2＋and Fe^3＋Fe2＋,which is contributed to the transition of electrons from the valence band to the conduction band.With the increase of oxygen vacancy concentration,the ratio of the adsorbed oxygen increases,which is beneficial to improve the absorption properties of the ceramic materials in near mid-infrared waveband.Thus,lanthanum aluminate material as the lining material of furnaces can improve the radiation heat transfer in the furnace,and has a broad application prospect.
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Basic Information:
DOI：
Chinese Library Classification Number:TG148[金属学及工艺—金属材料]
Citation Information:
LaAlO3 infrared radiation ceramic materials doped with Fe ion and Fe-Ni ions in B site were prepared with sol-gel method.The doped LaAlO3 samples were characterized and analyzed by XRD,FTIR,SEM,IR-2,XPS and other means.The results show that all the doped products are perovskite type complex oxides.The infrared emissivity is increased but the increment is small after Fe doping,and the infrared radiation properties are obviously improved after Fe-Ni co-doping.When the doping content of Fe^3＋is 0.25,the infrared emissivity within 3~5μm waveband increases from 0.345 to 0.821.The physical mechanism of the enhancement of infrared emissivity is as follows.There are two compensation mechanisms including the generation of oxygen vacancy and the change of chemical valence after B-site doping.The chemical valence change can produce small polarons from Ni ^3＋Ni 2＋and Fe^3＋Fe2＋,which is contributed to the transition of electrons from the valence band to the conduction band.With the increase of oxygen vacancy concentration,the ratio of the adsorbed oxygen increases,which is beneficial to improve the absorption properties of the ceramic materials in near mid-infrared waveband.Thus,lanthanum aluminate material as the lining material of furnaces can improve the radiation heat transfer in the furnace,and has a broad application prospect.
quote
| GB/T 7714-2015 | [1] CHANG Qing, LI Jiang-lin, LIU Qing-sheng, et al. Preparation of B-Site Doped Lanthanum Aluminate Infrared Radiation Ceramic Material with Sol-gel Method[J]. Rare Metals and Cemented Carbides, 2018(4): 43-49. |
| MLA | [1] CHANG Qing, et al., "Preparation of B-Site Doped Lanthanum Aluminate Infrared Radiation Ceramic Material with Sol-gel Method." Rare Metals and Cemented Carbides, no. 4, 2018, pp. 43-49. |
| APA | [1] CHANG Qing, LI Jiang-lin, LIU Qing-sheng, & YOU Zheng. (2018). Preparation of B-Site Doped Lanthanum Aluminate Infrared Radiation Ceramic Material with Sol-gel Method. Rare Metals and Cemented Carbides(4), 43-49. |
| IEEE | [1] CHANG Qing, LI Jiang-lin, LIU Qing-sheng, and YOU Zheng, "Preparation of B-Site Doped Lanthanum Aluminate Infrared Radiation Ceramic Material with Sol-gel Method," Rare Metals and Cemented Carbides, no. 4, pp. 43-49, 2018. keywords: {lanthanum aluminate;B- site doping;sol- gel method;infrared emissivity;infrared radiation;ceramic material} |