INVESTIGATION OF THE PROPERTIES OF LITHIUM-CONTAINING CERAMICS BASED ON LOW-PLASTIC CLAY

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY
Lubov Filippova, Anastasiya Akimova, E. Pikalov, Oleg G. Selivanov
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引用次数: 0

Abstract

Nowadays the production of construction materials and items is a multi-tonnage and actively developing production sphere. The regulatory requirements imposed on construction materials and products provide the assessment of their quality and application efficiency in construction or reconstruction of buildings and structures. The constantly increasing regulatory requirements and the limited availability of high-quality natural reserves demand the rapid development of new raw material resources. This paper presents the results of charge composition development based on low-plasticity clay, which has seen limited application due to the poor performance of items produced from it. However, certain functional additives can be introduced for producing high-quality materials. In this work, alongside lithium carbonate, the following additives have been considered: boric acid used as flux and titanium dioxide as a vitreous phase source. The lithium carbonate effect on total and open porosity, density, thermal conductivity, water absorption, frost resistance, compressive and bending strength has been studied. On the one hand lithium carbonate was found to demonstrate a pore-forming effect due to its decomposition during firing. On the other hand, lithium oxide formed during the additive decomposition facilitated the viscosity reduction of the vitreous phase during firing and its strength increase after cooling. Lithium oxide, similar to boric acid, is a flux, which makes further temperature reduction of liquid-phase sintering possible while preserving the surface self-glazing effect and the formation of the closed-pored internal structure of ceramics. The lithium carbonate pore-forming effect prevails over the flux-hardening and therefore, the amount this additive should be limited to obtain high performance properties and the compliance of resulting ceramics with regulatory requirements. The resulting ceramic material can be used for manufacturing products for buildings’ and structures’ plinth lining. ABSTRAK: Pada masa kini, pengeluaran bahan dan barangan pembinaan adalah dalam gandaan tan dan aktif dibangunkan terutama dalam bidang pengeluaran. Keperluan pengawalseliaan bahan dan produk pembinaan menyediakan aplikasi penilaian kualiti dan kecekapan pembinaan atau pembinaan semula bangunan dan struktur. Peningkatan berterusan terhadap keperluan pengawalseliaan dan ketersediaan rizab semula jadi berkualiti tinggi yang terhad menuntut kepada pembangunan pesat sumber bahan mentah baru berkembang. Kajian ini memperkenalkan hasil pembangunan komposisi caj berdasarkan tanah liat keplastikan rendah, di mana aplikasi terhad kepada keburukan bahan yang dihasilkan, namun bahan tambahan tertentu boleh diperkenalkan bagi menghasilkan bahan berkualiti tinggi. Menggunakan litium karbonat bersama bahan tambahan berikut: asid borik digunakan sebagai fluks dan titanium dioksida sebagai sumber fasa vitreus, telah diambil kira dalam kajian ini. Kesan litium karbonat pada keliangan, ketumpatan, kekonduksian terma, penyerapan air, rintangan fros, kekuatan mampatan dan lenturan telah dikaji. Litium karbonat didapati menunjukkan kesan pembentukan liang dalam proses penguraian semasa pembakaran. Sebaliknya, litium oksida dibentuk semasa penguraian aditif dan membantu dalam pengurangan kelikatan fasa vitreus semasa pembakaran dan kekuatannya meningkat selepas penyejukan. Litium oksida, serupa dengan asid borik, adalah fluks, berpotensi menyebabkan suhu sinteran terus berkurang pada fasa cecair sambil mengekalkan kesan kilauan pada permukaan kaca dan menutup pembentukan struktur liang dalaman seramik. Kesan pembentukan liang litium karbonat adalah mengatasi pengerasan fluks. Oleh itu, jumlah bahan tambah ini harus dihadkan bagi mencapai piawaian dan prestasi tinggi seramik yang terhasil. Bahan seramik yang terhasil ini boleh digunakan sebagai lapisan plint bangunan dan struktur dalam pembuatan produk.
基于低塑性粘土的含锂陶瓷特性研究
如今,建筑材料和产品的生产是一个多层次和积极发展的生产领域。对建筑材料和产品的监管要求规定了在建筑和结构的建造或重建中对其质量和应用效率的评估。不断提高的法规要求和有限的优质天然储备要求快速开发新的原材料资源。本文介绍了基于低塑性粘土的填料成分开发成果,由于用低塑性粘土生产的产品性能较差,因此其应用范围有限。不过,可以引入某些功能添加剂来生产高质量的材料。在这项工作中,除了碳酸锂,还考虑了以下添加剂:用作助熔剂的硼酸和用作玻璃相源的二氧化钛。研究了碳酸锂对总孔隙率和开放孔隙率、密度、导热性、吸水性、抗冻性、抗压强度和抗弯强度的影响。一方面,研究发现碳酸锂在烧制过程中分解会产生孔隙形成效应。另一方面,添加剂分解过程中形成的氧化锂促进了烧制过程中玻璃相粘度的降低和冷却后强度的提高。氧化锂与硼酸类似,是一种助熔剂,可使液相烧结温度进一步降低,同时保持陶瓷表面的自上釉效果和闭孔内部结构的形成。碳酸锂的孔隙形成效果优于助熔剂的硬化效果,因此应限制这种添加剂的用量,以获得高性能特性,并使制得的陶瓷符合法规要求。制得的陶瓷材料可用于制造建筑物和构筑物的基座衬里产品。摘要如今,建筑材料和材料的生产成倍增长,尤其是在生产领域。对建筑材料和产品的监督需要对建筑和结构的施工或重建进行质量和效率评估。保护需求的持续增长和优质自然资源的有限可用性要求快速开发新的新兴原材料来源。本文介绍了基于低强度粘土的 caj 组合物的开发成果,其应用仅限于所得材料的性能,但可以引入某些添加剂来生产高质量的材料。使用碳酸锂和以下添加剂:硼酸作为助熔剂,二氧化钛作为玻璃相源。研究了碳酸锂对塑性、粘性、导热性、吸水性、抗冻性、抗压和抗折强度的影响。研究发现,碳酸锂在燃烧分解过程中会形成毛刺。相比之下,氧化锂是在添加剂分解过程中形成的,在烧制过程中有助于减少玻璃相粘结,冷却后强度也会增加。氧化锂与硼酸类似,是一种助熔剂,有可能使液相中的烧结温度继续降低,同时保持玻璃表面的火花效应,封闭陶瓷内部毛刺结构的形成。碳酸锂的毛刺形成效果是为了克服助熔剂的硬化作用。因此,应限制这种添加剂的用量,以实现所生产陶瓷的特殊性和高性能。这些制得的陶瓷材料可在产品制造中用作建筑物和结构的釉层。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IIUM Engineering Journal
IIUM Engineering Journal ENGINEERING, MULTIDISCIPLINARY-
CiteScore
2.10
自引率
20.00%
发文量
57
审稿时长
40 weeks
期刊介绍: The IIUM Engineering Journal, published biannually (June and December), is a peer-reviewed open-access journal of the Faculty of Engineering, International Islamic University Malaysia (IIUM). The IIUM Engineering Journal publishes original research findings as regular papers, review papers (by invitation). The Journal provides a platform for Engineers, Researchers, Academicians, and Practitioners who are highly motivated in contributing to the Engineering disciplines, and Applied Sciences. It also welcomes contributions that address solutions to the specific challenges of the developing world, and address science and technology issues from an Islamic and multidisciplinary perspective. Subject areas suitable for publication are as follows: -Chemical and Biotechnology Engineering -Civil and Environmental Engineering -Computer Science and Information Technology -Electrical, Computer, and Communications Engineering -Engineering Mathematics and Applied Science -Materials and Manufacturing Engineering -Mechanical and Aerospace Engineering -Mechatronics and Automation Engineering
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