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Effect of varying Nd2O3 contents on the structure and mechanical properties of the radioactive waste form: aluminosilicate glass-ceramics

  • Pan Tan , Xiaoyan Shu , Lingshuang Li , Yanrong Cheng , Du Liu , Xiaoan Li , Xirui Lu EMAIL logo , Yi Xie , Shunzhang Chen , Bing Liao EMAIL logo and Faqin Dong EMAIL logo
Published/Copyright: April 21, 2023
Radiochimica Acta
From the journal Radiochimica Acta Volume 111 Issue 6

Abstract

The magmatic diagenetic environment was simulated by high-temperature melting and natural cooling. A series of glass-ceramics with different Nd2O3 contents were prepared by using complex component granite (aluminosilicate material). The phase evolution of the matrix at different temperatures was studied by X-ray diffraction (XRD). The structure of glass-ceramics was analyzed by infrared spectroscopy (IR) and scanning electron microscopy (SEM). The mechanical properties of glass-ceramics were also evaluated. The results showed that the glass transition of pure matrix begins at 1200 °C, and the sample with the highest degree of vitrification is obtained at 1500 °C. The addition of Nd2O3 promoted the melting of Fe3O4 crystal, resulting in the complete amorphous matrix when the Nd2O3 amount is in the range of 20–26 wt.%. With the further increase of Nd2O3 content, Nd-bearing feldspar first appeared. No raw material Nd2O3 was found, indicating that the formation of Nd-bearing feldspar may increase the carrying capacity of the material. The Gaussian fitting results showed that the glass-ceramic samples with Nd2O3 content of 29 wt.% are mainly composed of Q2 and Q3 structural units. In the EDS result, part of neodymium was clustered with small bright spots, while the spots were uniformly distributed on the sample surface as a whole. Meanwhile, the addition of Nd2O3 increased the mechanical properties of the samples (3.20 g/cm3, 8.33 GPa for the sample with 29 wt.% of Nd2O3). The results provide a strategy for the treatment of solid waste with radioactive residual actinides.

Keywords: glass-ceramics; natural granite; nuclear waste; secondary diagenesis; solidification
Corresponding authors: Xirui Lu, Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous and Rural Areas of Yunnan Province, Southwest Forestry University, Kunming, Yunnan 650224, P.R. China; State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P.R. China; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P.R. China; and National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P.R. China, E-mail: ; Bing Liao, State Key Laboratory for Cooperative Control and Joint Restoration of Soil and Water Pollution for Environmental Protection, Chengdu University of Technology, Chengdu, Sichuan 610059, P.R. China, E-mail: ; and Faqin Dong, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P.R. China, E-mail:

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: No. 21976146

Funding source: Open Foundation of Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous and Rural Areas of Yunnan Province

Award Identifier / Grant number: No. 2020ZD001

Funding source: Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology

Award Identifier / Grant number: No. 22fksy12

Funding source: Open Fund of National Key Laboratory of Soil and Water Pollution Control and Remediation for Environmental Protection

Award Identifier / Grant number: No. GHBK-2020-005

Funding source: Open Foundation of Nuclear Medicine Laboratory of Mianyang Central Hospital

Award Identifier / Grant number: No. 2021HYX028

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by National Natural Science Foundation of China (No. 21976146), Open Foundation of Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous and Rural Areas of Yunnan Province (No. 2020ZD001), Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology (No. 22fksy12), Open Fund of National Key Laboratory of Soil and Water Pollution Control and Remediation for Environmental Protection (No. GHBK-2020-005) and Open Foundation of Nuclear Medicine Laboratory of Mianyang Central Hospital (No. 2021HYX028).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-11-01
Accepted: 2023-02-15
Published Online: 2023-04-21
Published in Print: 2023-06-27

© 2023 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Investigation of charged-particle induced reactions on 27Al up to 100 MeV leading to the formation of 22Na and 24Na
  4. Preparation and potential application of amino-functionalized titanosilicates to removal of Th(IV) in aqueous solutions: optimization using response surface methodology (RSM)
  5. Radiation fabrication of hybrid activated carbon and functionalized terpolymer hydrogel for sorption of Eu(III) and Sm(III) ions
  6. Effect of varying Nd2O3 contents on the structure and mechanical properties of the radioactive waste form: aluminosilicate glass-ceramics
  7. Production of 192Ir sealed sources in Es Salam research reactor for non-destructive testing
  8. Eco-friendly flaxseed mucilage biofilms fabricated by gamma irradiation
  9. Grafting of heavy metal oxides onto pure polyester for the interest of enhancing radiation shielding performance
https://doi.org/10.1515/ract-2021-1122
Keywords for this article
glass-ceramics; natural granite; nuclear waste; secondary diagenesis; solidification

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Investigation of charged-particle induced reactions on 27Al up to 100 MeV leading to the formation of 22Na and 24Na
  4. Preparation and potential application of amino-functionalized titanosilicates to removal of Th(IV) in aqueous solutions: optimization using response surface methodology (RSM)
  5. Radiation fabrication of hybrid activated carbon and functionalized terpolymer hydrogel for sorption of Eu(III) and Sm(III) ions
  6. Effect of varying Nd2O3 contents on the structure and mechanical properties of the radioactive waste form: aluminosilicate glass-ceramics
  7. Production of 192Ir sealed sources in Es Salam research reactor for non-destructive testing
  8. Eco-friendly flaxseed mucilage biofilms fabricated by gamma irradiation
  9. Grafting of heavy metal oxides onto pure polyester for the interest of enhancing radiation shielding performance
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