メタルハニカム触媒担体用ステンレス鋼箔の高温酸化にともなう異常伸び現像

概要

論文の詳細を見る
High-temperature oxidation behavior of γ-Al_2O_3 slurry coated Fe-20Cr-5Al based thin foil (50μm in thickness) for a catalytic converter has been investigated. An anomalous foil expansion during high-temperature oxidation was observed in a case that the γ-Al_2O_3 slurry contains Ce^<3+> or La^<3+> or Y^<3+>. The expansion was accelerated by minor additives to the stainless steel foil such as Nb, Ti, Ta, or Mo. On the other hand, the expansion was effectively suppressed by a small addition of rare-earth elements or yttrium to the stainless steel foil. It has been concluded that the foil expansion was resulted from a creep deformation by a compressive stress which is accumulated in the course of lateral growth of α-Al_2O_3 scale formed between the foil and the coated layer.
社団法人日本鉄鋼協会の論文
1995-08-01