Ultra-hard amorphous AlMgB<sub>14</sub>films RF sputtered onto curved substrates

Grishin, Alexander M.; Putrolaynen, Vadim; Yuzvyuk, M. H.

doi:10.1088/2053-1591/aa6460

Cited by 4 publications

(7 citation statements)

References 25 publications

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“…5 show the measured hardness of the films have an almost constant value for temperature 25 which results in more stable temperature and denser microstructure during sputtering at 350 °C temperature. Hardness and Young's modulus values are comparable to other reports about AlMgB 14 as hard coating material [5,11,14].…”

Section: Resultssupporting

confidence: 87%

“…These dense B networks with unusual bonding generates interesting mechanical and transport properties. Hardness values range from 30 to 50 GPa [2,3], bulk moduli from 196 to 235 GPa [4][5][6] and melting points up to 2400 °C, underlining the exceptional bond strength of these B-networks [1]. The ternary boride AlMgB 14 is one of the promising boron-rich boride materials that can form icosahedral structures and has been investigated intensively during last years.…”

Section: Introductionmentioning

confidence: 99%

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Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

et al. 2020

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AlMgB 14 coatings have been deposited by DC magnetron sputtering from elemental targets on Si (001), Al 2 O 3 (0001) and MgO (001) substrates at temperatures in the range of 25-350 °C. The structural and mechanical properties of AlMgB 14 films were characterized by X-ray diffraction, scanning electron microscopy, nanoindentation, and analyzed as a function of deposition conditions and substrate materials. The results show that all films are X-ray amorphous, and the mechanical properties of the deposited films depend on the substrate and growth temperature. AlMgB 14 thin films deposited at 350 °C are found to have smoother surfaces and containing more well-formed B 12 icosahedra than the films deposited at lower temperature, which consequently increase the hardness of the deposited films. The maximum hardness and Young's modulus of the as-deposited films are about 32.3 GPa and 310 GPa, respectively, for films deposited on Al 2 O 3 substrate at 350 °C.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

et al. 2020

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“…Ранее нами было показано, что на больших расстояниях меж-ду подложкой и стехиометрической мишенью d = 100−150 mm доля бора в получаемых пленках значительно снижалась [9,10]. Поэтому для изготовления стехиометрических покрытий расстояние мишень-подложка снижали вплоть до 15−25 mm, приближая образец вплотную к плазме RF-магнетронного разряда.…”

Section: вв путролайнен ам гришин ив ригоевunclassified

“…Наибольшую твердость (порядка 20 GPa) показало покрытие на образце № 2, полученное при мощности 100 W и ди-станции 15 mm. Данное покрытие также продемонстрировало наиболее высокие значения доли работы упругой деформации η = 87% и индекса пластичности H/E ≈ 0.18, что выше значений, полученных нами ранее на Si(100) [9,10]. На рис.…”

Section: вв путролайнен ам гришин ив ригоевunclassified

Защита Gorilla-=SUP=-oledR-=/SUP=- Glass от царапин пленкой AlMgB-=SUB=-14-=/SUB=-

Путролайнен¹,

Grishin

Ригоев³

2017

Письма В Журнал Технической Физики

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Твердые покрытия борида алюминия-магния (ВАМ) получены на стекле CorningoledR GorillaoledR Glass методом высокочастотного магнетронного распыления единой стехиометрической мишени AlMgB14. Пленки BAM демонстрируют твердость в шкале Виккерса от 10 до 30 GPa и модуль Юнга от 80 до 160 GPa в зависимости от приложенных нагрузок. Нанесенное на стекло упрочняющее покрытие приводит к увеличению критической нагрузки, при которой происходит раскалывание подложки. Величина энергии адгезии пленок ВАМ на стеклянной подложке составляет 6.4 J/m2. DOI: 10.21883/PJTF.2017.19.45075.16782

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“…The next layer is grown at high RF target sputtering power. The affinity of the subsequent flow of sputtered atoms to an already evenly condensed template fosters the development of a smooth surface of a hard BAM film [15].…”

Section: Introductionmentioning

confidence: 99%

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

Grishin,

Putrolaynen

2023

Materials

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We report a new industrial application of aluminum magnesium boride AlMgB14 (BAM) coatings to enhance the hardness of tungsten carbide ceramic (WC-Co) and high-speed steel tools. BAM films were deposited by RF magnetron sputtering of a single dense stoichiometric ceramic target onto commercial WC-Co turning inserts and R6M5 steel drill bits. High target sputtering power and sufficiently short target-to-substrate distance were found to be critical processing conditions. Very smooth (6.6 nm RMS surface roughness onto Si wafers) and hard AlMgB14 coatings enhance the hardness of WC-Co inserts and high-speed R6M5 steel by a factor of two and three, respectively. Complete coating spallation failure occurred at a scratch adhesion strength of 18 N. High work of adhesion and low friction coefficient, estimated for BAM onto drill bits, was as high as 64 J/m2 and as low as 0.07, respectively, more than twice the surpass characteristics of N-doped diamond-like carbon (DLC) films deposited onto nitride high-speed W6Mo5Cr4V2 steel.

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Ultra-hard amorphous AlMgB₁₄films RF sputtered onto curved substrates

Cited by 4 publications

References 25 publications

Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

Защита Gorilla-=SUP=-oledR-=/SUP=- Glass от царапин пленкой AlMgB-=SUB=-14-=/SUB=-

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

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Ultra-hard amorphous AlMgB14films RF sputtered onto curved substrates

Cited by 4 publications

References 25 publications

Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

Structural and mechanical properties of amorphous AlMgB14 thin films deposited by DC magnetron sputtering on Si, Al2O3 and MgO substrates

Защита Gorilla-=SUP=-oledR-=/SUP=- Glass от царапин пленкой AlMgB-=SUB=-14-=/SUB=-

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

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Ultra-hard amorphous AlMgB₁₄films RF sputtered onto curved substrates