Effect of the reduction treatment on the basalt continuous fiber crystallization properties

Gutnikov, Sergey I.; Manylov, Mikhail S.; Lipatov, Ya.V.; Lazoryak, Bogdan I.; Похолок, К. В.

doi:10.1016/j.jnoncrysol.2013.03.007

Cited by 70 publications

(35 citation statements)

References 24 publications

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“…Basalt continuous fibers were produced using a laboratory-scale system [21]. BCFs were drawn from melts and wound onto a take-up reel.…”

Section: Resultsmentioning

confidence: 99%

“…The effect of the nozzle diameter and the conditions of obtaining fiber on its strength were studied in this work. Fiber strength is affected by a very large number of factors, including structure anisotropy [15], high crystallization ability [20], chemical composition fluctuations [21], ambient temperature and quenching speed [23], axial stress [14], etc. Thus, it is very difficult to isolate the influence of one factor in any study of this issue.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Nozzle Diameter on Basalt Continuous Fiber Properties

Gutnikov

Lazoryak

2019

Fibers

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The experimental data presented in this work show the effects of nozzle diameter, drawing speed, and formation temperature on the diameter and strength of basalt filaments and melt flow rate. Several series of basalt continuous fibers were obtained using a specially designed crucible of platinum–rhodium alloy with four nozzles of different diameters (1.5, 2.5, 3.5, and 4.5 mm). The conditions of the process varied in formation temperature (from 1370 to 1450 °C) and winding speed (from 300 to 1200 m/min). Melt flow rate was almost independent of the winding speed, indicating laminar flow of the melt through the nozzles and the Newtonian nature of the liquid. The results show strict correlations between fiber diameter, nozzle diameter, and winding speed. The diameter of the fibers had a significant effect on their strength. The tensile strength of the obtained basalt fibers varied from 550 to 3320 MPa depending on the formation conditions. The results of this work could be useful not only for scientists, but also for technologists seeking the optimal conditions for technological processes.

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“…Basalt continuous fibers were produced using a laboratory-scale system [21]. BCFs were drawn from melts and wound onto a take-up reel.…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of Nozzle Diameter on Basalt Continuous Fiber Properties

Gutnikov

Lazoryak

2019

Fibers

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“…Each batch of mixture placed in a platinum crucible was heated in a high‐temperature furnace at a rate of 250 K/h to 1473 K and at 50 K/h in a range 1473–1873 K and then held at 1873 K for 20 h. The bulk glass was quenched from 1873 to 298 K by rapid pouring the melt into water. Continuous fibers were produced using a laboratory scale system . The temperature of fiber manufacturing was measured with an accuracy of ±10 K. A fiber diameter was controlled by varying the rotation rate of the reel.…”

Section: Methodsmentioning

confidence: 99%

“…TiO 2 is often present. Mechanical properties and production conditions of basalt continuous fibers strongly depend on their composition …”

Section: Introductionmentioning

confidence: 99%

Effects of Ion Exchange on the Mechanical Properties of Basaltic Glass Fibers

Kuzmin

Zhukovskaya

Gutnikov

et al. 2015

Int J of Appl Glass Sci

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Basaltic glass fibers with different lithium oxide (6-14 mol%) and sodium oxide (2-14 mol%) contents were prepared. The influence of Li 2 O and Na 2 O content on the process of fiber manufacturing was investigated. Addition of alkali oxides reduced the forming temperature and substantially expanded the fiber-forming temperature ranges. The obtained thermal data from differential thermal analysis revealed a decline in glass transition temperature (T g ) of fibers against the compositional changes. The inclusion of Li 2 O and Na 2 O in the glass network led to a reduction in its thermal stability. The obtained X-ray diffraction patterns and IR spectra of Li-rich and Na-rich basaltic glass fibers confirmed the formation of highly polymerized structures such as LiAl(Si 2 O 6 ) and (Na,K)(AlSiO 4 ), respectively, and relatively depolymerized silicate anions. The effects of potassium-lithium and potassium-sodium ion exchange on the mechanical properties of basaltic glass fibers were investigated. As-received Li-rich and Na-rich basaltic glass fibers were ion-exchanged in potassium nitrate for different exchange times, and their mechanical properties were measured before and after chemical tempering. The measured tensile strength and Young's modulus values of the fibers showed an increase after treatment in molten salt. * Fig. 5. Young's modulus of as-received basalt fibers, Li-rich and Na-rich basaltic glass fibers before and after ion exchange in KNO 3 salt melt at 673 K for different exchange times (t = 15, 30 and 90 min). www.ceramics.org/IJAGSIon Exchange of Basaltic Glass Fibers 125

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“…Базальтовые стекла можно отнести к многокомпонентным алюмосиликатным стеклам следующего химического состава (в мас. %): 47-55 SiO 2 , 14-22 Al 2 O 3 , 7-15 Σ(FeO + Fe 2 O 3 ), 4-12 CaO, 3-9 MgO, 2-8 K 2 O, 2-8 Na 2 O и 1-3 TiO 2 [5]. Прочность на разрыв базальтовых волокон может достигать 3000 МПа [6], что сопоставимо с лучшими образцами стекловолокна марки Е. Потенциал развития технологии получения базальтовых непрерывных волокон заключается в реализации их преимуществ по сравнению с волокнами марки Е.…”

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Stage of Ion Exchange in the Continuous Basalt Fibers Production Technology

Zhukovskaya¹,

Pavlov²,

Попов³

et al. 2020

IJAFR (МЖПФИ)

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В работе рассмотрена возможность применения стадии ионного обмена в технологии получения базальтовых непрерывных волокон. В ходе выполнения работы на экспериментальной установке были получены непрерывные базальтовые волокна диаметром 10-12 мкм. Получение непрерывного волокна проводили на лабораторной установке, которая реализует двухстадийный процесс получения непрерывных волокон. На установке определяли технологические параметры получения волокна (нижний предел температурного интервала выработки, верхний предел температурного интервала выработки, температурный интервал выработки). В работе была сконструирована и изготовлена установка для проведения стадии ионного обмена для базальтовых непрерывных волокон. Полученные материалы были исследованы методами рентгенофазового анализа, рентгенофлуоресцентного анализа и оптической микроскопии. Показано, что в процессе проведения стадии ионного обмена в структуре базальтовых волокон не происходит процесса расслоения с их дальнейшей кристаллизацией. Химический состав волокон и их диаметр в процессе ионного обмена не меняется. Для изучения эффекта, который ионный обмен оказывает на механические свойства базальтовых волокон, проводились испытания прочности на разрыв и модуля упругости для моноволокон диаметром 10-12 мкм. Полученные непрерывные волокна обладают повышенной на 25-30 % прочностью на разрыв по сравнению с исходными. На основании полученных результатов можно сделать вывод о перспективе использования стадии ионного обмена в технологии получения базальтовых и стеклянных непрерывных волокон. Ключевые слова: стеклянные волокна, технология, прочность, ионный обменThe paper considers the possibility of using the ion exchange stage in the technology for producing basalt continuous fibers. The production of continuous fiber was carried out in a laboratory setup that implements a twostage process for producing continuous fibers. The installation determined the technological parameters of fiber production (lower limit of the temperature range of production, upper limit of the temperature range of production, temperature interval of production). In the course of the work continuous basalt fibers with a diameter of 10 -12 μm were obtained using laboratory scale system. In the work, an apparatus for ion exchange for continuous basalt fibers was designed and manufactured. The resulting materials were investigated by X-ray diffraction analysis, X-ray fluorescence analysis and optical microscopy. It is shown that during the stage of ion exchange the process of separation in the structure of basalt fibers with their further crystallization does not occur. The fiber chemical composition and fiber diameter during the ion exchange process does not change. To study the effect of ion exchange on the mechanical properties of basalt fibers, the tensile strength and elastic modulus were determined for selected monofilaments with a diameter of 10-12 μm. Continuous fibers with high tensile strength by 25-30 % compared with the original ones are obtained. According to recent investigation, t...

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Effect of the reduction treatment on the basalt continuous fiber crystallization properties

Cited by 70 publications

References 24 publications

Effect of Nozzle Diameter on Basalt Continuous Fiber Properties

Effect of Nozzle Diameter on Basalt Continuous Fiber Properties

Effects of Ion Exchange on the Mechanical Properties of Basaltic Glass Fibers

Stage of Ion Exchange in the Continuous Basalt Fibers Production Technology

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