超细Bi_2Mn_4O_(10)粉体的制备及其表征  被引量:1

Preparation and characterization of ultrafine Bi_2Mn_4O_(10) powders

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作  者:王志坚 张传福 湛菁 夏楚平 邬建辉 WANG Zhijian;ZHANG Chuanfu;ZHAN Jing;XIA Chuping;WU Jianhui(School of Metallurgy and Environment,Central South University,Changsha 410083,China;Hunan Rare Earth Metal Material Research Institute,Changsha 410126,China)

机构地区:[1]中南大学冶金与环境学院,湖南长沙410083 [2]湖南稀土金属材料研究院,湖南长沙410126

出  处:《中南大学学报(自然科学版)》2018年第10期2398-2404,共7页Journal of Central South University:Science and Technology

基  金:国家重点研发计划重点专项(2017YFC0210401);湖南省科学技术厅科技计划重点项目(2010SK2010);国家高技术研究发展计划(863计划)项目(2011AA061002)~~

摘  要:以次碳酸铋(BiO)_2CO_3?5H_2O和碳酸锰MnCO_3为原料,无水乙醇为研磨介质,采用球磨-煅烧法制备环境友好型Bi_2Mn_4O_(10)近红外反射涂层用材料。采用X线衍射、扫描电镜、激光粒度仪以及近红外分析仪对Bi_2Mn_4O_(10)的理化性能和近红外反射性能分别进行表征,考察前驱体不同煅烧温度对煅烧产物物化性能的影响。研究结果表明:通过湿法球磨可以获得混合均匀的次碳酸铋和碳酸锰机械混合前驱体;前驱体的最佳煅烧温度为650℃,所得到的Bi2Mn4O10形貌呈类球形或多面体,中位粒径D50=2.449 nm。在波长γ为1 000 nm的近红外反射率可达50%以上,2 000~2 500 nm高波段反射率则高达60%以上。Environmentally benign near-infrared reflective coating materials Bi2Mn4O10 was prepared by ball-milling and calcination method using(BiO)2CO3·5H2O and MnCO3 as raw materials and absolute alcohol as grinding media.Physicochemical properties and the near-infrared reflection performance of the samples were characterized by X-ray diffraction,scanning electron microscope,laser particle size analyzer and the near infrared spectrum absorption-reflection spectroscopy,respectively.The effects of calcination temperature on the morphology and phase of the calcined product were investigated.The results show that the mechanical mixture between(BiO)2CO3·5H2O and MnCO3 can be achieved by wet ball milling.The optimum calcination temperature of precursors is 650℃.The resultant Bi2Mn4O10 displays spherical or cubic morphology with medium diameter D50 of 2.449 nm and good near-infrared reflection performance.The reflectivity of Bi2Mn4O10 samples at 1 000 nm for the near-infrared radiation of wavelength is above 50%and above 60%when at 2 000?2 500 nm.

关 键 词:锰酸铋 近红外反射 反射隔热涂层 球磨 

分 类 号:TB34[一般工业技术—材料科学与工程]

 

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