Solid solution formed by tungsten bronze and perovskite structural oxide as well as preparation method thereof

• Main Authors: TAO CHUNWEI, YUAN XIN, LI LING, ZHANG SHANTAO, WANG RUIXUE, ZHANG JI
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a solid solution formed on the basis of exotic materials such as tungsten bronze structure Sr0.75Ba0.25Nb2O6 (SBN) and a perovskite structure 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (BNBT) as well as a preparation method thereof. The (1-x)SBN-XBNBT solid solution is obtained by mixing single-phase SBN powder and BNBT powder uniformly and sintering at high temperature for 3 hours. Bi<3+>, Na<+>, Ba<2+> and Ti<4+> in BNBT are diffused at high temperature to enter the SBN tungsten bronze structure and occupy a lattice position to form the solid solution; and the solid solution ceramic has advantages of large grain anisotropy, large-range adjustable electrical property and excellent room-temperature energy storage efficiency. Compared with the traditional solid solution based onthe similar material, the invention provides a solid solution formed on the basis of the exotic materials and also provides a new thought for developing a novel solid solution. 本发明公开了一种基于异类材料钨青铜结构SrBaNbO(SBN)与钙钛矿结构0.94BiNaTiO