| Mn掺杂对Ba0.7Sr0.3TiO3热演变及相组成的影响 |
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| 引用本文： | 吴其昌,徐亮,王慧萍,张敏,廖恒成.Mn掺杂对Ba0.7Sr0.3TiO3热演变及相组成的影响[J].兵器材料科学与工程,2009,32(1):78-82. |
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| 作者姓名： | 吴其昌 徐亮 王慧萍 张敏 廖恒成 |
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| 作者单位： | 东南大学材料科学与工程学院,江苏,南京,211189;江苏省先进金属材料重点实验室,江苏,南京,211189;东南大学材料科学与工程学院,江苏,南京,211189;江苏省先进金属材料重点实验室,江苏,南京,211189;东南大学材料科学与工程学院,江苏,南京,211189;江苏省先进金属材料重点实验室,江苏,南京,211189;东南大学材料科学与工程学院,江苏,南京,211189;江苏省先进金属材料重点实验室,江苏,南京,211189;东南大学材料科学与工程学院,江苏,南京,211189;江苏省先进金属材料重点实验室,江苏,南京,211189 |
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| 摘 要： | 采用溶胶-凝胶法在醋酸溶液体系中制备了未掺杂和掺Mn的钛酸锶钡的凝胶和粉末,采用DSC和XRD研究了Mn掺杂对Ba0.7Sr0.3Ti1-xMnxO3(BST)热演变及相组成的影响。结果表明:Mn掺杂强烈影响BST体系的热演变过程特别是晶化过程,由未掺杂BST体系的双相变过程逐渐变成单相变过程;在相同热经历状况下,Mn掺杂BST体系的晶化反应充分完全,BST相结晶性良好;Mn掺杂增大BST晶体(110)晶面间距并细化晶粒尺寸。掺Mn(x=0.10)的BST体系经210～340℃热解2.5h,750℃晶化退火0.5h后可以得到单一的BST相。
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| 关 键 词： | 钛酸锶钡 溶胶-凝胶 掺杂 锰 |
Effect of Mn doping on pyrolysis evolution and phase constitutes of Ba_(0.7)Sr_(0.3)TiO_3 |
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| WU Qichang,XU Liang,WANG Huiping,ZhANG Min,LIAO Hengcheng.Effect of Mn doping on pyrolysis evolution and phase constitutes of Ba_(0.7)Sr_(0.3)TiO_3[J].Ordnance Material Science and Engineering,2009,32(1):78-82. |
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| Authors: | WU Qichang XU Liang WANG Huiping ZhANG Min LIAO Hengcheng |
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| Affiliation: | School of Materials Science and Engineering;Southeast University;Nanjing 211189;China;Jiangsu Key Laboratory for Advanced Metallic Materials;China |
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| Abstract: | Gels and powders of Ba0.7Sr0.3(Ti1-xMnx)O3(BST) were prepared by sol-gel technique.Effect of Mn-doping on the pyrolysis evolution and phase constitutes of BST was investigated using DSC and XRD.Results showed that the Mn-doping led to a remarkable change of the crystallizing process of BST, from a double phase-transformation without dopant to a single phase-transformation with Mn-dopant.The crystallizing process of the Mn-doped BST powders proceeded more completely and the crystallinity of BST phase became ... |
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| Keywords: | (Ba Sr)TiO3 sol-gel doping manganese |
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