| 溴化钾晶体生长及性能研究 |
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| 引用本文： | 闫宇,魏志改,刘旺,陈彤,李春,林海. 溴化钾晶体生长及性能研究[J]. 长春理工大学学报(自然科学版), 2016, 39(3): 96-99. DOI: 10.3969/j.issn.1672-9870.2016.03.021 |
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| 作者姓名： | 闫宇 魏志改 刘旺 陈彤 李春 林海 |
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| 作者单位： | 长春理工大学 材料科学与工程学院,长春,130022;长春理工大学 材料科学与工程学院,长春,130022;长春理工大学 材料科学与工程学院,长春,130022;长春理工大学 材料科学与工程学院,长春,130022;长春理工大学 材料科学与工程学院,长春,130022;长春理工大学 材料科学与工程学院,长春,130022 |
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| 基金项目： | 吉林省科技厅项目(20160414043GH)吉林省经济结构战略调整引导资金专项项目(2015Y069)；长春市科技局科技项目(14KP017；14KT023；14GH011) |
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| 摘 要： | 对KBr原料进行了纯化处理，采用提拉法生长KBr晶体，获得了合适的晶体生长工艺参数：熔液上方温度梯度-20℃/cm~-30℃/cm，下方温度梯度10℃/cm~15℃/cm，拉速1~4mm/h，转速5~20r/min。测量了KBr晶体的红外光谱，表明纯化后的多晶料能够有效去除杂质，有利于获得高透过、低吸收的晶体。TG-DSC表明KBr在720.9℃发生熔化。XRD表明KBr晶体属于立方晶系，Fm3m空间群。测试了KBr晶体透过光谱，透过率大于92％。
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| 关 键 词： | KBr晶体 提拉法 生长工艺 透过率 |
Growth and Properties of Potassium Bromide Crystal |
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| YAN Yu,WEI Zhigai,LIU Wang,CHEN Tong,LI Chun,LIN Hai. Growth and Properties of Potassium Bromide Crystal[J]. Journal of Changchun University of Science and Technology, 2016, 39(3): 96-99. DOI: 10.3969/j.issn.1672-9870.2016.03.021 |
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| Authors: | YAN Yu WEI Zhigai LIU Wang CHEN Tong LI Chun LIN Hai |
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| Abstract: | The raw materials of potassium bromide were purified. The czochralski method (CZ) was adopted to grow KBr crystal, a suitable crystal growth process parameters were ensured with the temperature gradient above the melt is -20℃/cm~-30℃/cm,temperature gradient below the melt is 10℃/cm~15℃/cm,pulling rate is 1~4mm/h,and rota-tion rate is 5~20r/min. The IR spectrum of KBr crystal was measured, which showed that the purified material could remove impurities effectively, and it was beneficial to obtain KBr crystal with high transmittance and low absorption. TG-DSC shows the melting temperature is 720.9℃. XRD shows KBr crystal belongs to the Fm3m space group of the cubic crystal system. The transmittance spectra of KBr crystals were tested,and the transmittance was greater than 92%. |
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| Keywords: | KBr crystal czochralski method growth process transmission |
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