Oleksander Devizenko, I. Kopylets, S. Malykhin, V. V. Kondratenko, V. Makhlai, I. Garkusha, D.V. Lytvinyuk, S. Surovitskiy
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引用次数: 0
摘要
本文介绍了在 Al2O3 基底上制作多层涂层模型样品的结果,该样品由 30 个周期交替沉积的 10.5 纳米厚的 Ti41Zr41Ni18 层和 2.5 纳米厚的 W 层组成。通过 X 射线衍射仪和小角 X 射线反射仪对涂层的相态和结构状态进行了表征。研究发现,在退火过程中,多层成分中的钨层没有发生显著变化,所有变化仅发生在 Ti41Zr41Ni18 层。退火会影响层的厚度、密度和层间粗糙度。实验表明,"准晶 → 2/1 结晶近似物 "的相变伴随着体积比准晶相体积增加 8.3%,但这并不会导致周期性成分的破坏。事实证明,这种多层结构具有耐高温性,尽管发生了相变,但并没有失去与基底的结合。所使用的材料组合和较高的退火温度不会产生明显的内应力或机械损伤。根据这项研究的结果,可以进一步控制不同设计、不同层厚的分层准晶/钨微系统的形成。下一步工作是利用等离子体进行实际测试,研究辐射热的影响。
MULTILAYER TUNGSTEN/QUASI-CRYSTAL Ti-Zr-Ni SYSTEMS AS PROMISING MATERIALS OF PROTECTIVE ELEMENTS A FUSION REACTOR
This paper presents the results of fabricating a model sample of a multilayer coating on a Al2O3 substrate, which consisted of 30 periods of alternately deposited 10.5-nm-thick layers of Ti41Zr41Ni18 and 2.5-nm-thick layers of W. The effect of annealing for 1 h at 500, 600, and 700 °C was studied. Characterization of the phase and structural state of the coating by X-ray diffractometry and small-angle X-ray reflectometry was carried out. It was found that during the annealing process, the tungsten layers in the multilayer composition did not undergo significant changes, and all alterations occur only in the Ti41Zr41Ni18 layers. Annealing affected the thickness of the layers, density, and interlayer roughness. It has been experimentally shown that the phase transformation ”quasicrystal → 2/1 crystalline approximant” is accompanied by an 8.3% volume increase compared to the volume of the quasicrystalline phase, but this does not lead to the destruction of the periodic composition. The multilayer structure proved to be resistant to high temperatures and, despite phase changes, did not lose its bond with the substrate. The used combination of materials and the high annealing temperature did not generate significant internal stresses or mechanical damage. The results obtained in this study allow for the further controlled formation of layered quasicrystal/tungsten microsystems of various designs with different layer thicknesses. The next perspective involves conducting practical tests with plasma to study the radiation-thermal impact.
期刊介绍:
The journal covers the following topics:
Physics of Radiation Effects and Radiation Materials Science;
Nuclear Physics Investigations;
Plasma Physics;
Vacuum, Pure Materials and Superconductors;
Plasma Electronics and New Methods of Acceleration.