IR and EPMA indicated that the sintered sample mostly had structural units of [SiO4 ], [BO4 ], [AIO4 ] and [Fe3+ O4 ] tetrahedron in silicate net, Na K Ca2 Fe2+ and some Fe3+ were in the places of maintaining charges balance;

• IR和EPMA研究表明,烧结法样品的硅酸盐网络中主要有[SiO_4]、[BO_4]、[AlO_4]及[Fe~(3+)O_4]四面体结构单元,Na~+、K~+、Ca~(2+)、Fe~(2+)及部分Fe~(3+)平衡处于维持电荷平衡位置。