张静文,张飞鹏,杨新宇,王盼,王翔,张久兴.胶体干燥工艺对制备CaMnO3粉末的影响[J].稀有金属材料与工程,2018,47(10):3213~3217.[ZHANG Jingwen,ZHANG Feipeng,YANG Xinyu,WANG Pan,WANG Xiang,ZHANG Jiuxing.Effect of colloidal drying process on preparation of CaMnO3 powder[J].Rare Metal Materials and Engineering,2018,47(10):3213~3217.]
胶体干燥工艺对制备CaMnO3粉末的影响
投稿时间:2017-01-04  修订日期:2018-09-03
中文关键词:  CaMnO3粉末  溶胶凝胶法  表征
基金项目:国家自然科学(51572066)和第一届河南省自然科学基金(20160162)项目资助
中文摘要:
      以金属硝酸盐为初始原料,利用溶胶凝胶法制备了溶胶,在不同干燥工艺条件下得到各类干凝胶前驱物,后经煅烧得到CaMnO3多晶粉末。本文研究了不同干燥工艺对制备CaMnO3粉末的影响,并利用XRD、SEM、TEM、激光粒度分析仪等表征手段分析了所得粉末。结果表明,多温区连续升温干燥工艺有利于得到完全脱水的干凝胶前驱物,其中90℃+120℃+140℃+160℃连续加热干燥工艺方式最佳,所得干凝胶前驱物经950℃煅烧后能够得到结晶性良好,颗粒较为均匀且形貌规则的CaMnO3多晶粉末,多晶颗粒体由单晶区域组成,各单晶取向不同。
Effect of colloidal drying process on preparation of CaMnO3 powder
英文关键词:CaMnO3 powder  sol gel method  characterization
英文摘要:
      The gel was prepared by sol-gel method using metal nitrate as raw materials. All kinds of dry gel precursors were obtained under different drying conditions, then the CaMnO3 polycrystalline powders were obtained by calcinating the dry gel. This paper studies the effects of different drying processes on preparation of CaMnO3 powder, and the obtained powders were characterized by XRD, SEM, TEM and laser particle size analyzer. The results show that the continuous heating step for various drying temperatures is beneficial to obtain dry gel precursor with complete dehydration.The drying process of 90℃+120℃+140℃+160℃ is the best among the four processes. The CaMnO3 polycrystalline powder with good crystallinity, uniform particles and regular morphology was obtained after calcining the dry gel at 950℃, the CaMnO3 polycrystalline particles were composed by single-crystals with different orientations.
作者单位E-mail
张静文 合肥工业大学材料科学与工程学院 747946870@qq.com 
张飞鹏 河南城建学院数理学院  
杨新宇 合肥工业大学材料科学与工程学院  
王盼 合肥工业大学材料科学与工程学院  
王翔 合肥工业大学材料科学与工程学院  
张久兴 合肥工业大学材料科学与工程学院  
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