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金属矿山 ›› 2023, Vol. 52 ›› Issue (07): 275-282.

• 综合利用 • 上一篇    下一篇

CeO2 掺杂对 CMAS 微晶玻璃结构和性能的影响

徐文策1 曹 钊1 马 瑞2 欧阳顺利3
  

  1. 1. 内蒙古科技大学矿业研究院,内蒙古 包头 014010;2. 内蒙古科技大学材料与冶金学院,内蒙古 包头 014010;3. 广州航海学院,广东 广州 510725
  • 出版日期:2023-07-15 发布日期:2023-09-05
  • 基金资助:
    国家自然科学基金项目(编号:11964025,11564031);内蒙古自治区重大基础研究开放课题资助项目(编号:0406091701);内蒙古科技大学创新基金项目(编号:2019YQL06);内蒙古自治区自然科学基金项目(编号:2018LH02004)。

Effect of CeO2 Doping on the Structure and Properties of CMAS Glass-ceramics

XU Wence1 CAO Zhao1 MA Rui2 OUYANG Shunli3   

  1. 1. Mining Research Institute,Inner Mongolia University of Science and Technology,Baotou 014010,China;2. School of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China;3. Guangzhou Maritime University,Guangzhou 510725,China
  • Online:2023-07-15 Published:2023-09-05

摘要: 固体废物资源化利用是促进社会可持续发展和环境保护的有效方式,以铁尾矿与粉煤灰为主要原料, 采用常规与微波处理制备 CaO-MgO-Al2O3-SiO2(CMAS)体系微晶玻璃,研究了不同 CeO2 添加量对微晶玻璃的结晶动 力学参数、结晶行为和性能的影响。 结果表明:CeO2 含量的增加使玻璃的稳定性与聚合度增强,结晶温度逐渐提高, 但 CeO2 含量为 4%时,常规处理样品出现了 CeO2 析晶。 通过拉曼光谱分析发现,微波处理使玻璃中[ CeO4 ]含量增 加,促使[CeO4]与金属阳离子耦合,抑制离子扩散。 力学性能测试表明,当 CeO2 的掺杂量为 2%时,微晶玻璃强度与 韧性均提高。 然而,随 CeO2 含量的增加微晶玻璃的力学性能降低。

关键词: 微晶玻璃, 拉曼光谱, 微波效应, 辉石, CeO2

Abstract: Resource utilization of solid waste is an effective way to promote sustainable social development and environmental protection, the CaO-MgO-Al2O3-SiO2 ( CMAS) system glass-ceramics was prepared by conventional and microwave treatment using iron tailing and fly ash as the main raw materials. The effects of different CeO2 contents on the crystallization kinetic parameters,crystallization behavior and properties of glass-ceramics were investigated. The results showed that the improvement of CeO2 content led to the enhancement of the stability and polymerization of the glass and the gradual improvement of the crystallization temperature. However,CeO2-independent crystallization appeared in the conventionally treated samples with 4% CeO 2 content. Raman spectroscopy analysis revealed that the microwave treatment increased the [CeO4]content in the glass,which prompted the coupling of [CeO4]with metal cations and inhibited ion diffusion. The mechanical property tests revealed that the strength and toughness of glass-ceramics were enhanced when the doping amount of CeO2 was 2%. However,the mechanical properties of the glass-ceramics decreased as the CeO2 content increased.

Key words: glass-ceramics,Raman spectroscopy,microwave effects,augite,CeO2