Microstructure, mechanical and neutron shielding properties of aluminum borate ceramics obtained from alumina and boric acid

IF 1.8 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS
Dong Lao, Yan Zhang, Lingfeng Huang, Xuwen Liang, Wenbao Jia
{"title":"Microstructure, mechanical and neutron shielding properties of aluminum borate ceramics obtained from alumina and boric acid","authors":"Dong Lao,&nbsp;Yan Zhang,&nbsp;Lingfeng Huang,&nbsp;Xuwen Liang,&nbsp;Wenbao Jia","doi":"10.1007/s41779-024-01031-9","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, a series of aluminum borate ceramics (ABCs) with needle-like whiskers were obtained using a low-cost, solid-state, pressureless sintering ceramic route, without any additives during the preparation process. The effects of different alumina/boric acid molar ratios and sintering temperatures on the phase composition, microstructure, mechanical properties, specific surface area, pore size distribution, and sub-cadmium neutron shielding properties of ABCs were studied using orthogonal experiments. It was observed that pure phase aluminum borate (Al<sub>18</sub>B<sub>4</sub>O<sub>33</sub>) ceramics could be obtained at 1100 ℃, forming a mass of needle-like whiskers. The whiskers’ aspect ratio, fracture work, specific surface area, and pore size distribution of ABCs are maximized when ABCs are sintered at 1100 ℃ with 9:6 alumina/boric acid molar ratio. In this condition, ABCs (0.5 cm) can shield 70% of sub-cadmium neutrons (E&lt;0.4 eV). These findings demonstrate the great potential of aluminum borate ceramics for neutron shielding applications.</p></div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"60 3","pages":"905 - 915"},"PeriodicalIF":1.8000,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Australian Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s41779-024-01031-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0

Abstract

In this study, a series of aluminum borate ceramics (ABCs) with needle-like whiskers were obtained using a low-cost, solid-state, pressureless sintering ceramic route, without any additives during the preparation process. The effects of different alumina/boric acid molar ratios and sintering temperatures on the phase composition, microstructure, mechanical properties, specific surface area, pore size distribution, and sub-cadmium neutron shielding properties of ABCs were studied using orthogonal experiments. It was observed that pure phase aluminum borate (Al18B4O33) ceramics could be obtained at 1100 ℃, forming a mass of needle-like whiskers. The whiskers’ aspect ratio, fracture work, specific surface area, and pore size distribution of ABCs are maximized when ABCs are sintered at 1100 ℃ with 9:6 alumina/boric acid molar ratio. In this condition, ABCs (0.5 cm) can shield 70% of sub-cadmium neutrons (E<0.4 eV). These findings demonstrate the great potential of aluminum borate ceramics for neutron shielding applications.

Abstract Image

Abstract Image

从氧化铝和硼酸中获得的硼酸铝陶瓷的微观结构、机械性能和中子屏蔽性能
本研究采用低成本、固态、无压烧结陶瓷路线,在制备过程中不使用任何添加剂,获得了一系列具有针状晶须的硼酸铝陶瓷(ABC)。通过正交实验研究了不同氧化铝/硼酸摩尔比和烧结温度对 ABC 的相组成、微观结构、机械性能、比表面积、孔径分布和亚镉中子屏蔽性能的影响。结果表明,在 1100 ℃ 下可获得纯相硼酸铝(Al18B4O33)陶瓷,形成大量针状晶须。在 1100 ℃、氧化铝/硼酸摩尔比为 9:6 的条件下烧结 ABC,其晶须的长宽比、断裂功、比表面积和孔径分布均达到最大值。在这种条件下,ABC(0.5 厘米)能屏蔽 70% 的亚镉中子(E<0.4 eV)。这些发现证明了硼酸铝陶瓷在中子屏蔽应用方面的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of the Australian Ceramic Society
Journal of the Australian Ceramic Society Materials Science-Materials Chemistry
CiteScore
3.70
自引率
5.30%
发文量
123
期刊介绍: Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信