| 摘要 |
<p>A material suitable for use as the active anode surface in the electrolytic reduction of alumina to aluminium metal defined by the formula: A<SUB>1+x</SUB>B<SUB>1+delta</SUB>C<SUB>d</SUB>O<SUB>4 </SUB>where A is a divalent cation or a mixture of cations with a relative preference for octahedral coordination, B is a trivalent cation or mixture of cations with a relative preference for tetrahedral coordination, C is a trivalent cations with a relative preference for octahedral coordination or a four-valent cation with a relative preference for octahedral coordination, O is the element oxygen: When C is trivalent x=0, 0.8<d<1, delta<0.2 and x+d+d is essentially equal to 1. When C is four-valent 0.4<x<0.6, 0.4<d<0.6, delta<0.2 and x+d+delta is essentially equal to 1.</p> |
