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呈类球状,平均粒径约为100 nm. 关键词:钛酸锶钡; 化学共沉淀; 纳米粉体; 热分解; barium strontium titanate; chemical co-precipitation; nano-powders; microstructure; [全文内容正在添加中] ......
氯化铵对铝酸锶:铕荧光光谱的影响李颖毅1,吴燕利2,李永绣2(1.江西省南昌市南昌大学材料科学与工程学院2.南昌大学 稀土中心,南昌 330031)摘 要:铝酸锶铕是一种性能优良,应用广泛的荧光材料,它具有绿色长余辉,根据其激发光谱,它能与紫光二极管匹配.氯化铵的添加使发光由绿向红转变,Eu3+(f→f)尖峰出现,氯化铵的添加改变其基质组成,Cl-的引入有利于Eu3+的形成.关键词:无机非金属材料； 铝酸锶铕； 荧光材料； 基质； 氯化铵......
度稳定性,引入的非铁电第二相对BST铁电性的''稀释作用''使BST-BSL的可调率降低,但由于烧结助剂的添加量少,使BST-BSL在1 kV/mm外加偏场下的可调率仍在5%以上. 关键词:钛酸锶钡; 复相陶瓷; 微观形貌; 介电性能; strontium barium titanate; composite ceramics; microstructure; dielectric......
+) ,Dy~(3+)的最佳硼酸量,并且对硼酸在材料合成过程中的作用机理进行了探讨. 关键词:硼酸; 铝酸锶; 蓝色长余辉材料; 物相; boric acid; strontium aluminate,blue long afterglow material; phase; [全文内容正在添加中] ......
数. 关键词:模板晶粒生长法; 铌酸锶铋陶瓷; 织构陶瓷; 流延法; templated grain growth; strontium bismuth niobate ceramics; textured ceramic; tape casting; [全文内容正在添加中] ......
. 关键词:改善的溶胶凝胶法; 钛酸锶钡薄膜; 晶化; 介电性能; improved sol-gel method; barium strontium titanate film; crystallization; dielectric properties; [全文内容正在添加中] ......
温度稳定性,但是由于少量Bi~(3+)对Ba~(2+)/Sr~(2+)的取代,晶粒的细化,晶界相比例增多等原因导致BST-BZN可调率降低,1 kV/mm的偏场作用下其可调率只有0.15%. 关键词:钛酸锶钡; 复相陶瓷; 微观形貌; 介电性能; barium strontium titanate; composite ceramics; microstructure; dielectric......
Metals, Beijing 100022, P.R. China) 摘要:Nano-sized barium strontium titanate (BaxSr1-x TiO3, BST) powders were synthesized with hydrothermal and solvothermal methods at 120 ℃ for 4 h based on the reaction precursor of barium acetate, strontium acetate, tetrabutyl titanium and (CH3 )4NOH. The crystalline phase, particle size and morphology of the BST powders were characterized by X-ray diffraction (XRD......
Effects of yttrium and strontium additions on as-cast microstructure of Mg-14Li-1Al alloys LI Rui-hong1, 2, PAN Fu-sheng1, 2, JIANG Bin1, 2, YIN Heng-mei1, 2, LIU Ting-ting1, 2 1. National... and/or strontium additions produce a strong grain refining effect in LA141 alloy. The mean grain sizes of the alloys with addition of Y and/or Sr are reduced remarkably from 600 to 500, 260, 230 μm, respectively......
AM50-1.4Sr合金高温拉伸性能影响较小. 关键词:AM50镁合金; 锶合金化; 固溶处理; 显微组织; 高温力学性能; AM50 magnesium alloy; strontium alloying; solid-solution treatment; microstructure; elevated temperature mechanical properties; [全文内容正......
