Oxidation behaviour of zirconium-doped NiAl coatings deposited on pure nickel
Oxidation behaviour of zirconium-doped NiAl coatings deposited on pure nickel
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纯镍上沉积锆掺杂 NiAl 涂层的氧化行为
DOI：
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发表时间：
2012
影响因子：
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通讯作者：
J. Romanowska
中科院分区：
文献类型：
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作者：
M. Zagula;J. Sieniawski;J. Romanowska
目的：研究了纯镍表面沉积的掺锆NiAl涂层的氧化行为。设计/方法/途径：锆掺杂的NiAl涂层沉积的化学气相沉积方法上的纯镍。通过使用光学显微镜（Nikon Epiphot 300）和扫描电子显微镜（Hitachi S-3400 N）（配备有能量色散光谱仪EDS（NORAN INSTRUMENTS的VOYAGER））进行锆掺杂的铝化物涂层的微观结构研究。在Czylok公司生产的加热炉中，于1100 ℃空气气氛中氧化500 h。用X射线衍射仪（ARL X 'TRAX）分析了氧化膜的相组成。结果表明：锆掺杂铝化物涂层的显微结构由β-NiAl、γ-Ni 3Al和γ-Ni（Al）相组成。元素分布的EDS分析结果表明，渗铝1.5 h后，锆位于距离表面13-16 µm处，渗铝5 h后，锆在整个涂层中呈随机分布。锆（小于1%at）可以通过向金属/氧化物界面的快速扩散而有助于更快地减少Al空位，并增加氧化物层与涂层的粘附力，这就是抗氧化性提高的原因。研究限制/影响：研究内容包括锆掺杂铝化物涂层的显微结构、相组成和氧化行为。实际影响：锆掺杂的铝化物涂层可用作飞机发动机涡轮机叶片的铂和钯改性的铝化物涂层的廉价替代物。独创性/价值：调查范围包括微观结构，相组成和氧化行为的锆掺杂铝化物涂层。
Purpose: In this paper the oxidation behaviour of zirconium-doped NiAl coatings deposited on a pure nickel was investigated. Design/methodology/approach: The zirconium-doped NiAl coatings were deposited by the chemical vapour deposition method on the pure nickel. The microstructure investigations of zirconiumdoped aluminide coatings were performed by the use of an optical microscope (Nikon Epiphot 300) and a scanning electron microscope (Hitachi S-3400N) equipped with an Energy Dispersive Spectroscope EDS (VOYAGER of NORAN INSTRUMENTS). Oxidation behaviour at 1100oC for 500 h in the air atmosphere in the furnace manufactured by Czylok company was evaluated. The phase composition of oxidized coatings were identified by the X-ray (ARL X’TRAX) diffractometer. Findings: The microstructures of zirconium-doped aluminide coatings consist of the β-NiAl, γ’-Ni3Al and γ-Ni(Al) phases. EDS analysis results of elements distribution indicate that zirconium is located at the distance of 13-16 µm from the surface after 1.5 h of aluminizing and randomly distributed in the whole coating after 5 h of aluminizing. Zirconium (less than 1% at) could contribute to a faster reduction of Al vacancies through fast diffusion towards the metal/ oxide interface and increases adhesion of the oxide layer to the coating and this why the oxidation resistance improves. Research limitations/implications: The research involve microstructure, phase composition and oxidation behaviour investigation of zirconium doped aluminide coatings. Practical implications: The zirconium-doped aluminide coatings may be used as the cheaper alternative to platinum and palladium modified aluminide coatings for turbine blades of aircraft engines. Originality/value: The range of investigation includes microstructure, phase composition and oxidation behaviour of zirconium doped aluminide coating.
层状镍基或钯基氧化物的热力学性质
DOI：
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发表时间：
2013
期刊：
影响因子：
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作者：
Ichiko Shoji;Daisuke Nakai;Masaru Arai;& Yansong Wang;中島聡美;Shota Suzuki. Jun Akimitsu
通讯作者：
Shota Suzuki. Jun Akimitsu