STRUCTURAL-PHASE CHANGES IN THIN FILMS AND SURFACE LAYERS OF Ti41.5Zr41.5Ni17 ALLOY, STIMULATED BY RADIATION-THERMAL IMPACT OF HYDROGEN PLASMA

Malykhin, S.V.; Makhlai, V.А.; Surovitskiy, S.V.; Borisova, S. S.; Herashchenko, S.S.; Кондратенко, В. В.; Kopylets, I. А.; Baturin, A.A.; Terentyev, D.

doi:10.46813/2019-119-083

Problems of Atomic Science and Technology 2019

DOI: 10.46813/2019-119-083

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STRUCTURAL-PHASE CHANGES IN THIN FILMS AND SURFACE LAYERS OF Ti41.5Zr41.5Ni17 ALLOY, STIMULATED BY RADIATION-THERMAL IMPACT OF HYDROGEN PLASMA

S.V. Malykhin¹,

V.А. Makhlai²,

S.V. Surovitskiy³

et al.

Abstract: X-ray diffraction and SEM microscopy were used to study structural and phase changes in the surface layers of a Ti41.5Zr41.5Ni17 alloy bulk sample (target) and a thin film (deposited by magnetron sputtering of the target) under radiation-thermal action of pulsed hydrogen plasma with a thermal load of 0.6 MJ/m2 in QSPA Kh-50 installation. It is established that the irradiation results in the formation of a two-phase state: the icosahedral quasicrystalline phase together with the phase of the 1/1 approximant cry… Show more

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Cited by 2 publications

References 8 publications

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BEHAVIOR OF THE Ti-Zr-Ni THIN FILM CONTAINING QUASICRYSTALLINE AND APPROXIMANT PHASES UNDER RADIATIVE-THERMAL ACTION IN TRANSITION MODES

Malykhin¹,

Makhlai²,

Surovitskiy³

et al. 2020

Problems of Atomic Science and Technology

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X-ray diffraction and SEM microscopy were used to study the structural and phase changes in a thin film obtained by magnetron sputtering of a Ti52Zr30Ni18 target (at.%) on a steel substrate under the radiation-thermal influence of pulsed hydrogen plasma on an QSPA Kh-50 accelerator. A technique has been worked out for the formation of the quasicrystalline and crystal-approximant phases as a result of high-speed quenching using pulsed action with a heat load of 0.6 MJ/m2. The changes in the contents of these phases as well as in their structure and substructure parameters were studied during isothermal vacuum annealing at a temperature of 550 °C and also as a result of irradiation with 5 plasma pulses in the range of heat load from 0.1 to 0.4 MJ/m2. The quasicrystalline phase was found to be resistant to irradiation with hydrogen plasma.

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BEHAVIOR OF THE Ti-Zr-Ni THIN FILM CONTAINING QUASICRYSTALLINE AND APPROXIMANT PHASES UNDER RADIATIVE-THERMAL ACTION IN TRANSITION MODES

Malykhin¹,

Makhlai²,

Surovitskiy³

et al. 2020

Problems of Atomic Science and Technology

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STABILITY OF THIN QUASI-CRYSTALLINE Ti-Zr-Ni FILMS AND RELATED CRYSTALLINE PHASES UNDER LOW-ENERGY TRANSIENT PLASMA IRRADIATION

Malykhin¹,

Кондратенко²,

Makhlai³

et al. 2022

Problems of Atomic Science and Technology

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The properties of Ti41Zr38.3Ni20.7 thin films under radiation-thermal action of hydrogen plasma with a surface heat load of 0.2 MJ/m2 was studied at the QSPA Kh-50 quasi-stationary plasma accelerator (NSC KIPT).The phase composition, structural state, and surface morphology were studied using X-ray diffraction and scanning electron microscopy. It was found that the quasicrystalline phase and related crystalline phases, the Laves phase, the α-solid solution, and the 2/1 phase of the Ti-Zr-Ni approximant crystal were stable under irradiation with up to 20 hydrogen plasma pulses. The phase composition did not change. It is shown that the changes in the coatings mainly manifest themselves as changes in the substructure of the observed phases. With an increase in the plasma exposure dose, the structure of the quasicrystalline icosahedral phase improves, and the size of the coherence regions increases. In the films consisting of crystalline phases, a partial phase transformation is observed with a redistribution of components between the 2/1 phase of the approximant crystal and the α-solid solution phase. It was found that thin films of the TiZr-Ni system containing a quasicrystalline icosahedral phase, irradiated with radiation-thermal plasma pulses, are less prone to cracking than coatings with crystalline phases of the same system.

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STRUCTURAL-PHASE CHANGES IN THIN FILMS AND SURFACE LAYERS OF Ti41.5Zr41.5Ni17 ALLOY, STIMULATED BY RADIATION-THERMAL IMPACT OF HYDROGEN PLASMA

Cited by 2 publications

References 8 publications

BEHAVIOR OF THE Ti-Zr-Ni THIN FILM CONTAINING QUASICRYSTALLINE AND APPROXIMANT PHASES UNDER RADIATIVE-THERMAL ACTION IN TRANSITION MODES

BEHAVIOR OF THE Ti-Zr-Ni THIN FILM CONTAINING QUASICRYSTALLINE AND APPROXIMANT PHASES UNDER RADIATIVE-THERMAL ACTION IN TRANSITION MODES

STABILITY OF THIN QUASI-CRYSTALLINE Ti-Zr-Ni FILMS AND RELATED CRYSTALLINE PHASES UNDER LOW-ENERGY TRANSIENT PLASMA IRRADIATION

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