Study on the high-temperature resistance of tungsten tailings-based alkali-activated materials by pressure forming

IF 1.8 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Ceramic Technology Pub Date : 2024-07-19 DOI:10.1111/ijac.14851
Zhifang Tong, Zhaoxun Xie, Pujie Hua, Qiang Zeng, Shengzhou Zhang, Xianjun Li
{"title":"Study on the high-temperature resistance of tungsten tailings-based alkali-activated materials by pressure forming","authors":"Zhifang Tong,&nbsp;Zhaoxun Xie,&nbsp;Pujie Hua,&nbsp;Qiang Zeng,&nbsp;Shengzhou Zhang,&nbsp;Xianjun Li","doi":"10.1111/ijac.14851","DOIUrl":null,"url":null,"abstract":"<p>Alkali-activated materials (AAMs) were prepared using tungsten tailings via pressure molding and casting, and their high-temperature resistances were analyzed. Variations in their compressive strength, gel, and physical phase transformation, pore structure, and morphology at different temperatures were investigated and comparatively analyzed. Results showed that the compressive strength of both AAMs first increased and then decreased with increasing temperature. At 600°C, the pressure-molded AAM exhibited a considerably higher compressive strength (152.38 MPa) than the cast-molded AAM (42.05 MPa). Thermogravimetric–differential scanning calorimetry, XRD, and FTIR analyses showed that the pressure-molded AAM contained more gel phases than the cast-molded AAM at the same temperature. The gel phase further polymerized and decomposed at high temperatures (&gt;800°C), forming nepheline and zeolite crystals. Mercury intrusion porosimetry and scanning electron microscopy results revealed that pressure molding increases the contact between the gel and unreacted materials, effectively reducing the porosity and densifying the AAM. The pressure-molded AAM had a considerably smaller pore diameter than the cast-molded AAM; thus, the former had considerably higher compressive strength. The porosity and pore size of the pressure-molded AAM gradually increased with the temperature, which polymerized the gel phase and eventually decomposed it; this increased its compressive strength first and then decreased.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Applied Ceramic Technology","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ijac.14851","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

Alkali-activated materials (AAMs) were prepared using tungsten tailings via pressure molding and casting, and their high-temperature resistances were analyzed. Variations in their compressive strength, gel, and physical phase transformation, pore structure, and morphology at different temperatures were investigated and comparatively analyzed. Results showed that the compressive strength of both AAMs first increased and then decreased with increasing temperature. At 600°C, the pressure-molded AAM exhibited a considerably higher compressive strength (152.38 MPa) than the cast-molded AAM (42.05 MPa). Thermogravimetric–differential scanning calorimetry, XRD, and FTIR analyses showed that the pressure-molded AAM contained more gel phases than the cast-molded AAM at the same temperature. The gel phase further polymerized and decomposed at high temperatures (>800°C), forming nepheline and zeolite crystals. Mercury intrusion porosimetry and scanning electron microscopy results revealed that pressure molding increases the contact between the gel and unreacted materials, effectively reducing the porosity and densifying the AAM. The pressure-molded AAM had a considerably smaller pore diameter than the cast-molded AAM; thus, the former had considerably higher compressive strength. The porosity and pore size of the pressure-molded AAM gradually increased with the temperature, which polymerized the gel phase and eventually decomposed it; this increased its compressive strength first and then decreased.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
基于钨尾矿的碱活性材料通过压力成型的耐高温性研究
利用钨尾矿通过压力成型和铸造制备了碱活性材料(AAMs),并对其耐高温性能进行了分析。研究并比较分析了它们在不同温度下的抗压强度、凝胶和物理相变、孔结构和形态的变化。结果表明,随着温度的升高,两种 AAM 的抗压强度先增大后减小。在 600°C 时,压模 AAM 的抗压强度(152.38 兆帕)明显高于浇铸成型 AAM(42.05 兆帕)。热重-差示扫描量热仪、X 射线衍射和傅立叶变换红外光谱分析表明,在相同温度下,压模成型的 AAM 比浇铸成型的 AAM 含有更多的凝胶相。凝胶相在高温(800°C)下进一步聚合和分解,形成霞石和沸石晶体。汞侵入孔隙模拟和扫描电子显微镜结果表明,压力成型增加了凝胶与未反应材料之间的接触,有效降低了 AAM 的孔隙率并使其致密化。与浇注成型 AAM 相比,压力成型 AAM 的孔径要小得多,因此前者的抗压强度要高得多。压模 AAM 的孔隙率和孔径随着温度的升高而逐渐增大,从而使凝胶相聚合并最终分解;这使得其抗压强度先增大后减小。
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 去求助
来源期刊
International Journal of Applied Ceramic Technology
International Journal of Applied Ceramic Technology 工程技术-材料科学:硅酸盐
CiteScore
3.90
自引率
9.50%
发文量
280
审稿时长
4.5 months
期刊介绍: The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;
期刊最新文献
Contents The crack‐healing behavior and oxidation resistance of Al2O3–ZrO2–SiB6 ceramic at 600–1200°C Fabrication and characterization of silicon carbide ceramic filtration media via recycling of waste red mud Piezo‐biphasic scaffold based on polycaprolactone containing BaTiO3 and hydroxyapatite nanoparticles using three‐dimensional printing for bone regeneration The effect of MnO2 additive on the microstructure and mechanical properties of magnesium aluminate spinel
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1