チタン酸アルミニウムの水素による還元について

概要

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The reduction of titanium aluminate (Al_2O_3・TiO_2) heated at 1500℃ in various reducing atmospheres containing hydrogene has been studied. The titanium aluminate is prepared by heating Al_2O_3・TiO_2 compacts in air at 1650℃ for four hours. For the identification of crystal structure in the specimens X-ray diffraction analysis is done with the Norelco type diffractometer, using Cu K_α radiation. As shown in Fig. 4. X-ray patterns of Al_2O_3・TiO_2 heated in different reducing atmospheres containing H_2 have shown observable shift in the (33.0) line and the evidence of α-Al_2O_3. Under the condition of more stronger reducing atmosphere X-ray patterns show the formations of free Ti_2O_3 and α-Al_2O_3. These data lead to the following conclusion for the reduction of Al_2O_3・TiO_2 ; Al_2O_3・TiO_2→(Al_<2-x>・Ti_x)O_3・TiO_2+Al_2O_3→Al_2O_3+Ti_2O_3.
社団法人日本材料学会の論文
1963-09-15