Structure and Infrared Radiation Properties of Metal Oxides-Doped Cordierites Using Graded Sintering Synthesis

Tao Jin; Rong Chang Zeng

doi:10.4028/www.scientific.net/AMR.311-313.140

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 311-313Structure and Infrared Radiation Properties of...

Structure and Infrared Radiation Properties of Metal Oxides-Doped Cordierites Using Graded Sintering Synthesis

Abstract:

The infrared radiation materials of transition metal oxides doped cordierite systems are synthesized using graded solid phase sintering. And the infrared radiation properties are investigated by means of X-ray diffraction, infrared spectrometry and scanning electron microscope. The results show that new compounds are developed during graded heat treatment from 900 °C to 1250 °C. The spinel phases produced are the main crystal material, and the different doped ions and impurity carbon cause the new phases, to different degree defect in this system ,which types can be classified into: (Mg,Zn,□)Fe₂O₄, (Mg,Zn,Co,□)Al₂O₄, (Co,□)Cr2O4,SiC etc., The main diffraction peaks of new phases formed are positioned at the zone (2θ) between 35.227o and 36.837o, and has stretching vibration peaks. And the main infrared absorption peaks located at the low wave number zone indicate to some degree deviation under different doped ions. The doped cordierites have infrared emissivity superior to that prepared with the conventional one-step synthesis. The full wave band integral emissivity of the spinel phases ranged between 0.88 and 0.94 at ambient temperature.

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Advanced Materials and Processes: ADME 2011

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Advanced Materials Research (Volumes 311-313)

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140-144

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.311-313.140

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Online since:

August 2011

Authors:

Tao Jin, Rong Chang Zeng

Keywords:

Graded Sintering Synthesis, Infrared Emissivity, Spinel Phase

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