Article(id=1319726507879154182, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319726426404803327, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20250310, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744732800000, receivedDateStr=2025-04-16, revisedDate=1747324800000, revisedDateStr=2025-05-16, acceptedDate=null, acceptedDateStr=null, onlineDate=1792576918810, onlineDateStr=2026-10-21, pubDate=1766160000000, pubDateStr=2025-12-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792576918810, onlineIssueDateStr=2026-10-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792576918810, creator=13701087609, updateTime=1792576918810, updator=13701087609, issue=Issue{id=1319726426404803327, tenantId=1146029695717560320, journalId=1263187385517883426, year='2025', volume='53', issue='12', pageStart='3433', pageEnd='3832', issueExtLink='null', onlineDate='null', pubDate='1766160000000', pubDateStr='2025-12-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792576899386, creator='13701087609', updateTime=1792577516933, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319729016953749818, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319726426404803327, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319729016953749819, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319726426404803327, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3770, endPage=3778, ext={EN=ArticleExt(id=1319726508051120647, articleId=1319726507879154182, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Effect of Mixed Alkali on Structure and Properties of R2O-CaO-Al2O3-SiO2 Glass, columnId=1319726165087077079, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Article, runingTitle=null, highlight=null, articleAbstract=
Introduction

This study was to investigate the influence of mixed alkali effect on the structure and properties of a R2O-CaO-Al2O3-SiO2 glass system, to provide theoretical support and practical guidance for optimizing the formulation of high-level radioactive liquid waste (HLW) glass vitrification technology. The safe disposal of HLW is a critical aspect for the sustainable development of the nuclear industry. The Joule-heated melter vitrification as an internationally engineered and implemented method could immobilize radioactive waste via melting HLW with base glass frit in an electric furnace to form a stable vitrified product for long-term containment.

Methods

Glass samples with varying Z-values (i.e., Z = n(Na2O)/(n(Na2O) + n(Li2O)) were prepared by a high-temperature melting method. Their structure and properties were systematically analyzed by infrared spectroscopy, Raman spectroscopy, and high-temperature resistivity analysis.

Results and discussion

The structural characterization revealed that the silicate tetrahedral units Q2 and Q3 are the primary structural units influencing glass properties. The structure exhibits regular changes as Z-value increases. At Z=0.2, the proportions of Q3 and Q4 reach the maximum values, while Q1 and Q2 reach the minimum values. At Z=0.6, Q1, Q3, and Q4 proportions reach the maximum values, while Q2 reaches the minimum value, indicating the most compact glass structure and the most significant mixed-alkali effect.

The results of performance tests demonstrate that the physical and thermal properties both are governed due to the mixed-alkali effect The density and thermal expansion coefficient both increase with increasing Z-value. The density reaches the maximum value as Z=0.6, while the thermal expansion coefficient has the minimum value. The glass transition temperature (Tg) initially decreases and then increases, reaching its minimum as Z=0.2. The high-temperature viscosity has the maximum value as Z=0.4 and the minimum value as Z=0.6.

For the electrical properties in single-alkali systems, the resistivity at the melting temperature (T2) decreases in an order of K2O >Na2O > Li2O, while it at the forming temperature (T4) decreases in an order of K2O > Li2O > Na2O. In the mixed-alkali system, the resistivity reaches the maximum value at Z of 0.6-0.8, being correlated to the "blocking effect" of alkali ions. The activation energy for electrical conduction changes nonlinearly with Z-value. In single-alkali systems, it increases in the order of Na2O < Li2O < K2O.

Conclusions

This study clarified the mixed-alkali effect on the R2O-CaO-Al2O3-SiO2 glasses, particularly highlighting the low viscosity as Z = 0.6 and the high resistivity characteristics as Z = 0.6-0.8. These findings could provide a clear guidance for glass formulation design.

, authors=Xuanjiang DONG, Debo YANG, Zhu CUI, Dongyu WANG, Yunjie JIAO, Zhanyuan DU, Kun ZHAO, Yongchang ZHU, authorsList=Xuanjiang DONG, Debo YANG, Zhu CUI, Dongyu WANG, Yunjie JIAO, Zhanyuan DU, Kun ZHAO, Yongchang ZHU, authorCompany=null, correspAuthors=Debo YANG, Yongchang ZHU, authorNote=

DONG Xuanjiang (1996-), female, Master candidate. E-mail:

, correspAuthorsNote=
YANG Debo (1977-), male, Senior Engineer. E-mail: ;
ZHU Yongchang (1977-), male, Doctoral candidate.
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基于R2O-CaO-Al2O3-SiO2玻璃体系,采用高温熔融法制备了不同碱金属氧化物摩尔比Z(Z=n(Na2O)/[n(Na2O)+n(Li2O)],n为摩尔)的玻璃,并对样品进行了红外光谱、拉曼光谱、高温电阻率等性能测试,探讨了混合碱效应对R2O-CaO-Al2O3-SiO2玻璃结构和性能的影响。结果表明:硅氧四面体Q2和Q3的结构单元是影响该玻璃性能的主要因素。随着Z值不断增加,密度、热膨胀系数、转变温度以及高温黏度均出现混合碱效应。含量相同的单一碱金属样品,在熔融温度T2下,电阻率按K+、Na+、Li+顺序递减;在成形温度T4条件下,电阻率按K+、Li+、Na+顺序递减。当Z=0.6时,黏度出现极小值;当Z=0.6~0.8时,电阻率达到极大值。本工作为玻璃配方设计提供了指导意义。

, authors=董炫疆, 杨德博, 崔竹, 王东宇, 焦云杰, 杜瞻远, 赵鲲, 朱永昌, authorsList=董炫疆, 杨德博, 崔竹, 王东宇, 焦云杰, 杜瞻远, 赵鲲, 朱永昌, authorCompany=null, correspAuthors=杨德博, 朱永昌, authorNote=

董炫疆(1996—),女,硕士研究生。

, correspAuthorsNote=
杨德博(1977—),男,高级工程师;
朱永昌(1977—),男,博士研究生。
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混合碱对R2O-CaO-Al2O3-SiO2系列玻璃结构和性能的影响
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董炫疆 , 杨德博 , 崔竹 , 王东宇 , 焦云杰 , 杜瞻远 , 赵鲲 , 朱永昌
硅酸盐学报 | 研究论文 2025,53(12): 3770-3778
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硅酸盐学报 |研究论文 2025 , 53 (12) : 3770 -3778
混合碱对R2O-CaO-Al2O3-SiO2系列玻璃结构和性能的影响
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董炫疆 , 杨德博 , 崔竹, 王东宇, 焦云杰, 杜瞻远, 赵鲲, 朱永昌
作者信息
  • 中国建筑材料科学研究总院有限公司,玻璃基功能材料技术创新中心,北京 100024
通讯作者:
杨德博(1977—),男,高级工程师;
朱永昌(1977—),男,博士研究生。
作者简介:

董炫疆(1996—),女,硕士研究生。

Effect of Mixed Alkali on Structure and Properties of R2O-CaO-Al2O3-SiO2 Glass
Xuanjiang DONG , Debo YANG , Zhu CUI, Dongyu WANG, Yunjie JIAO, Zhanyuan DU, Kun ZHAO, Yongchang ZHU
Affiliations
  • China Building Materials Academy, Beijing, Glass-based Functional Materials Technology Innovation Center, Beijing 100024, China
  • Corresponding Author:
    YANG Debo (1977-), male, Senior Engineer. E-mail: ;
    ZHU Yongchang (1977-), male, Doctoral candidate.

    DONG Xuanjiang (1996-), female, Master candidate. E-mail:

出版时间: 2025-12-20 doi: 10.14062/j.issn.0454-5648.20250310
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基于R2O-CaO-Al2O3-SiO2玻璃体系,采用高温熔融法制备了不同碱金属氧化物摩尔比Z(Z=n(Na2O)/[n(Na2O)+n(Li2O)],n为摩尔)的玻璃,并对样品进行了红外光谱、拉曼光谱、高温电阻率等性能测试,探讨了混合碱效应对R2O-CaO-Al2O3-SiO2玻璃结构和性能的影响。结果表明:硅氧四面体Q2和Q3的结构单元是影响该玻璃性能的主要因素。随着Z值不断增加,密度、热膨胀系数、转变温度以及高温黏度均出现混合碱效应。含量相同的单一碱金属样品,在熔融温度T2下,电阻率按K+、Na+、Li+顺序递减;在成形温度T4条件下,电阻率按K+、Li+、Na+顺序递减。当Z=0.6时,黏度出现极小值;当Z=0.6~0.8时,电阻率达到极大值。本工作为玻璃配方设计提供了指导意义。

钙铝硅玻璃  /  混合碱效应  /  拉曼光谱  /  红外光谱  /  高温电阻率
Introduction

This study was to investigate the influence of mixed alkali effect on the structure and properties of a R2O-CaO-Al2O3-SiO2 glass system, to provide theoretical support and practical guidance for optimizing the formulation of high-level radioactive liquid waste (HLW) glass vitrification technology. The safe disposal of HLW is a critical aspect for the sustainable development of the nuclear industry. The Joule-heated melter vitrification as an internationally engineered and implemented method could immobilize radioactive waste via melting HLW with base glass frit in an electric furnace to form a stable vitrified product for long-term containment.

Methods

Glass samples with varying Z-values (i.e., Z = n(Na2O)/(n(Na2O) + n(Li2O)) were prepared by a high-temperature melting method. Their structure and properties were systematically analyzed by infrared spectroscopy, Raman spectroscopy, and high-temperature resistivity analysis.

Results and discussion

The structural characterization revealed that the silicate tetrahedral units Q2 and Q3 are the primary structural units influencing glass properties. The structure exhibits regular changes as Z-value increases. At Z=0.2, the proportions of Q3 and Q4 reach the maximum values, while Q1 and Q2 reach the minimum values. At Z=0.6, Q1, Q3, and Q4 proportions reach the maximum values, while Q2 reaches the minimum value, indicating the most compact glass structure and the most significant mixed-alkali effect.

The results of performance tests demonstrate that the physical and thermal properties both are governed due to the mixed-alkali effect The density and thermal expansion coefficient both increase with increasing Z-value. The density reaches the maximum value as Z=0.6, while the thermal expansion coefficient has the minimum value. The glass transition temperature (Tg) initially decreases and then increases, reaching its minimum as Z=0.2. The high-temperature viscosity has the maximum value as Z=0.4 and the minimum value as Z=0.6.

For the electrical properties in single-alkali systems, the resistivity at the melting temperature (T2) decreases in an order of K2O >Na2O > Li2O, while it at the forming temperature (T4) decreases in an order of K2O > Li2O > Na2O. In the mixed-alkali system, the resistivity reaches the maximum value at Z of 0.6-0.8, being correlated to the "blocking effect" of alkali ions. The activation energy for electrical conduction changes nonlinearly with Z-value. In single-alkali systems, it increases in the order of Na2O < Li2O < K2O.

Conclusions

This study clarified the mixed-alkali effect on the R2O-CaO-Al2O3-SiO2 glasses, particularly highlighting the low viscosity as Z = 0.6 and the high resistivity characteristics as Z = 0.6-0.8. These findings could provide a clear guidance for glass formulation design.

calcium aluminosilicate glass  /  mixed alkali effect  /  raman spectroscopy  /  infrared spectroscopy  /  high temperature resistivity
董炫疆, 杨德博, 崔竹, 王东宇, 焦云杰, 杜瞻远, 赵鲲, 朱永昌. 混合碱对R2O-CaO-Al2O3-SiO2系列玻璃结构和性能的影响. 硅酸盐学报, 2025 , 53 (12) : 3770 -3778 . DOI: 10.14062/j.issn.0454-5648.20250310
Xuanjiang DONG, Debo YANG, Zhu CUI, Dongyu WANG, Yunjie JIAO, Zhanyuan DU, Kun ZHAO, Yongchang ZHU. Effect of Mixed Alkali on Structure and Properties of R2O-CaO-Al2O3-SiO2 Glass[J]. Journal of the Chinese Ceramic Society, 2025 , 53 (12) : 3770 -3778 . DOI: 10.14062/j.issn.0454-5648.20250310

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2025年第53卷第12期
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doi: 10.14062/j.issn.0454-5648.20250310
  • 接收时间:2025-04-16
  • 首发时间:2026-10-21
  • 出版时间:2025-12-20
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  • 收稿日期:2025-04-16
  • 修回日期:2025-05-16
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    中国建筑材料科学研究总院有限公司,玻璃基功能材料技术创新中心,北京 100024

通讯作者:

杨德博(1977—),男,高级工程师;
朱永昌(1977—),男,博士研究生。
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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