Growth of tourmaline single crystals containing transition metal elements in hydrothermal solutions

Сеткова, Т. В.; Shapovalov, Yury; Balitsky, V. S.

doi:10.1016/j.jcrysgro.2010.11.044

Cited by 27 publications

(14 citation statements)

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“…Tourmaline is a ring-structured silicate mineral and its chemical formula is (Na,Ca)(Mg, Fe,Mn,Li,Al) 3 Al 6 (Si 6 O 18 )(BO 3 ) 3 (OH,F) 4 [3][4][5][6]. Tourmaline has a permanent electrode effect, and it can release negative ions and radiate far infrared ray [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Polymerizable Tourmaline Methacrylate

et al. 2015

e-J. Surf. Sci. Nanotech.

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The surface modification of tourmaline powder with methacrylic anhydride was studied in this work, and the reaction process conditions were optimized according to the experimental parameters of contact angle and turbidity in liquid paraffin. The structure of the modified tourmaline was characterized by means of IR, XRD and SEM. The structural analysis indicated that methacrylic group was attached onto the surface of tourmaline by the reaction of tourmaline with methacrylic anhydride to get a polymerizable tourmaline methacrylate. The experimental results indicated that modified tourmaline presented enhanced hydrophobicity than the unmodified tourmaline.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Polymerizable Tourmaline Methacrylate

et al. 2015

e-J. Surf. Sci. Nanotech.

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“…Voskresenskaya [6] worked out the methodology of monocrystal growth for Co , Ni , Fe , Cr , Mn , and Mg bearing tourmalines using highly concentrated hydrate solutions of chlorides of appro priate metals at 750°C and 200 MPa. Later [7][8][9], we performed synthesis at significantly lower parameters (500°C and 100 MPa) and demonstrated the possibil ity of tourmaline monocrystal growth on seeds in boric, boric-fluoride, boric-chloride, and boricchloride-fluoride hydrothermal solutions. The maxi mal growth rate (up to 0.05 mm/day) was registered for Co bearing tourmaline with the growth on seed not exceeding 2 mm.…”

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confidence: 98%

“…It was previously established [7][8][9] that tourmaline did not recrystallize in pure and mixed boric solutions. However, tourmaline may grow on seeds in these solu tions, if quartz or corundum are applied as a charge.…”

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Synthesis of fine-crystalline tourmaline in hydrothermal solutions

2015

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In recent years, the synthesis of new nano and fine crystalline materials for production of ceramics, textures, filters, molecular sieves has stimulated increased interest in science and technology world wide [1]. The synthesis of fine crystalline tourmaline is of practical interest for production of piezoelectric ceramics and textures, since it is characterized by valuable piezo and pyroelectric properties.Tourmaline is a complex boron bearing silicate with a general crystal chemical formula XY 3 Z 6 Si 6 O 18 (BO 3 ) 3 V 3 W, where X = Na + , Ca 2+ , K + , vacancy; Y = Fe 2+ , Fe 3+ , Mg 2+ , Li + , Al 3+ , Co 2+ , Ni 2+ ; Z = Al 3+ , Fe 3+ , Cr 3+ ; V = HO -, O 2-; W = HO -, O 2-, F -[1]. In the first part of the last century, tourmaline was applied in various radio and acoustoelectronic instruments (for hydrolocators of submarines, mea surements of pressures during powerful explosions, etc.). The interest in this mineral decreased in the course of time, because of the appearance of industrial technologies of growth of quartz monocrystals, which are currently applied in piezotechnology, acoustoelec tronics, optics, and other spheres of science and tech nology. However, the main advantages of tourmaline are the higher values of piezoelectric constants and the frequency coefficient in comparison with quartz. Due to the high mechanical strength, tourmaline may be used for production of piezo and pyroelectric ele ments for high accuracy and high sensitivity instru ments. In spite of its wide abundance in nature, defectless tourmaline crystals applicable for produc tion of such instruments are rare. Moreover, the com position of the natural tourmaline crystal is very heter ogeneous due to the complex structure stimulating abundant iso and heterovalent isomorphism.The recent studies of tourmaline synthesis [2-5] are of scientific and practical interest in the field of investigation of the structural and crystal chemical peculiarities of the tourmaline group minerals. In the 1960s-1980s I.E. Voskresenskaya [6] worked out the methodology of monocrystal growth for Co , Ni , Fe , Cr , Mn , and Mg bearing tourmalines using highly concentrated hydrate solutions of chlorides of appro priate metals at 750°C and 200 MPa. Later [7-9], we performed synthesis at significantly lower parameters (500°C and 100 MPa) and demonstrated the possibil ity of tourmaline monocrystal growth on seeds in boric, boric-fluoride, boric-chloride, and boricchloride-fluoride hydrothermal solutions. The maxi mal growth rate (up to 0.05 mm/day) was registered for Co bearing tourmaline with the growth on seed not exceeding 2 mm. As a whole, it was shown that the growth of monocrystal tourmaline on a seed was char acterized by low rates and controlled by the high P-T parameters of the process and high concentration of solutions. In this relation, the synthesis of fine crystal line tourmaline for production of ceramics contributes to solving the problem of creation of new piezoelectric materials.The methodology of synthesis of fine crystalline material ...

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“…Воскресенской, являются очень высокие Р−Т-параметры и высококонцентрированные растворы, требующие использования дорогостоящего оборудования и материалов. В работе (Goerne et al, 1999) Rosenberg, Foit, 1986;Ekambaram, 1986;Schreyer et al, 2000;Marler et al, 2002;Ertl et al, 2012;Kutzschbach et al, 2017 Rosenberg, Foit, 1986;Ekambaram, 1986;Lynch, 1997;Goerne et al, 1999 Dutrow et al, 1999, Ertl et al, 2012Berryman et al, 2015Berryman et al, , 2016 CaO Воскресенская, иванова, 1975;Taran et al, 1993;Setkova et al, 2011;London, 2011;Рождественская и др., 2012Рождественская и др., , Vereshchagin et al, 2015 ЭКсПеРиМенТАльнОе изучение усТОйчиВОсТи ГЕОХИМИЯ №10 2019 сеТКОВА, БАлицКий, ШАПОВАлОВ и в особенности давлениях до 4 ГПа (Berryman et al, 2014(Berryman et al, , 2016.…”

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“…В представленной статье приводятся основные результаты по устойчивости турмалина и фазообразованию в опытах по его синтезу в гидротермальных растворах различного состава в диапазоне температур 400−750°с и давлений 100−150 МПа (сеткова и др., 2009а). на основе полученных результатов были подобраны условия для синтеза на затравку кристаллов турмалина, содержащие (Fe, Mg, Ni, Co, Cr, Cu)элементы, Ga-и Ge-содержащих турмалинов и тонкокристаллического турмалина (Setkova et al, 2011;сеткова и др., 2017).…”

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Experimental study of the stability and synthesis of the tourmaline supergroup minerals

Setkova¹,

Balitsky²,

Shapovalov³

2019

Геохимия

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Tourmaline is one of the most widespread minerals in nature and one of the most popular gems and promising piezoelectric material. The growth of large crystals is today a topical task. With the growth of tourmaline single crystals appears problems associated with its complex chemical composition, high chemical stability in hydrothermal solutions and a low growth rate. The paper reviews of recent work on the tourmaline synthesis and the results obtained in IEM RAS.

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Growth of tourmaline single crystals containing transition metal elements in hydrothermal solutions

Cited by 27 publications

References 8 publications

Synthesis and Characterization of Polymerizable Tourmaline Methacrylate

Synthesis and Characterization of Polymerizable Tourmaline Methacrylate

Synthesis of fine-crystalline tourmaline in hydrothermal solutions

Experimental study of the stability and synthesis of the tourmaline supergroup minerals

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