硅酸盐学报2021，Vol.49Issue(9)：1943-1951,9.DOI:10.14062/j.issn.0454-5648.20200920
四方钨青铜结构NaSr2Nb5O15铁电陶瓷的致密化
Densification of NaSr2Nb5O15 Ferroelectric Ceramics with Tetragonal Tungsten Bronze Structures
摘要
Abstract
Ceramics with tetragonal tungsten bronze (TTB)-type structures undoped with sintering aids are difficult to densify due to the high anisotropy of their crystal structures.In this paper,TTB-structured NaSr2Nb5O15 (NSN) was selected as the research object to prepare dense ceramics by the design of raw materials.Two powders synthesized by conventional solid-state sintering and molten salt methods were used.The former powder consisted of three phases as the matrix,NSN and intermediate phases (NaNbO3 and SrNb2O6).The latter powder,with a large particle size,acted as a seed.The effects of seed content on the sintering behavior and microstructure of NSN ceramics were investigated.Dense NSN ceramics were prepared by reaction sintering using seed addition into the matrix.The seed content had an obvious influence on the microstructures of the NSN ceramics.关键词
铌酸锶钠/致密化/微观结构/无铅陶瓷Key words
sodium niobate strontium/densification/microstructure/lead-free ceramics分类
化学化工引用本文复制引用
吕蕊,刘亮亮,王永强..四方钨青铜结构NaSr2Nb5O15铁电陶瓷的致密化[J].硅酸盐学报,2021,49(9):1943-1951,9.基金项目
国家自然科学基金项目(51502191)资助. （51502191）
