ゾルゲル法によるムライトの生成に及ぼす遷移金属化合物の影響(<特集>ガラス・アモルファス材料及びその材料科学の進展)

概要

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Mullite was synthesized by a sol-gel method from the mixed solutions of Si(OC2H5)4 and Al(NO3)3 with small amounts of the mineralizing additives such as MnCl2, Fe(NO3)3, CoCl2, Ni(NO3)2 or CuCl2. The formation of mullite began at about 1100°C for the sample with 3.73×10-3mol (RCu=3.74×10-2) CuCl2⋅2H2O. The accelerating effect of mullite formation was observed for all samples with mineralizing additives except those with more than 3.64×10-3mol (RMn=2.94×10-2) MnCl2⋅4H2O and, with less than 1.61×10-3mol (RFe=1.44×10-2) Fe(NO3)3⋅9H2O and 1.78×10-3mol (RCo=1.23×10-2) CoCl2⋅6H2O. Ni(NO3)2 was most effective for the accelerating of mullite formation among the mineralizing additives.
社団法人日本セラミックス協会の論文
1989-03-01