热液处理塑性变形钛微弧氧化涂层的相变研究

IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Ł. Maj , A. Trelka , F. Muhaffel , A. Góral , A. Wierzbicka-Miernik , P. Petrzak , M.O. Cichocka , M. Kulczyk , U. Kolb
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引用次数: 0

摘要

在本研究中,研究了水热处理对微弧氧化(MAO)涂层的微观结构和残余应力的影响。通过扫描和透射电子显微镜、ASTAR取向图和能量色散x射线光谱化学分析,对沉积态和水热处理涂层进行了详细的微观结构研究。在x射线衍射仪(XRD)中,采用经典的sin2ψ法进行了宏观尺度的残余应力测量,而基于掠入射XRD的新型多hkl法则用于确定特定深度的应力。结果表明,水热处理是一种高效的方法,可以使MAO涂层从最初含有一小部分非晶相完全转变为完全的晶体结构,同时保持较高的力学性能。tio2 -锐钛矿晶型的晶粒以各种形式生长:等轴、细长或纳米棒状,既牺牲了非晶相,也使原有的超细晶粒变粗。磷和钠在钛锐钛矿中的溶解度较低,导致水热处理涂层中磷和钠含量降低。对于所有涂层,观察到应力场向压应力的有利变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phase transformation of coatings produced with micro-arc oxidation on plastically deformed titanium through hydrothermal treatment
In this study, the effect of hydrothermal treatment on the microstructure and residual stresses of micro-arc oxidation (MAO)-produced coatings on hydrostatically deformed commercially pure titanium was investigated. A detailed microstructure study of both as-deposited and hydrothermally treated coatings was conducted with scanning and transmission electron microscopy supported by ASTAR orientation mapping and chemical analysis via energy dispersive X-ray spectrometry. Macro-scale measurements of residual stresses were carried out using the classical sin2ψ method in an X-ray diffractometer (XRD), while the novel multi-HKL method, based on grazing-incidence XRD, was used to determine of the stresses at a specific depths. The results demonstrate that hydrothermal treatment is a highly efficient method allowing to fully transform the MAO coatings which initially contained a fraction of amorphous phase, into a fully crystalline structure, while preserving high mechanical properties. The grains of TiO2-anatase crystallographic variant grow in various forms: equiaxed, elongated or nanorods, both at the expense of amorphous phase and due to coarsening of original ultra-fine grains. The low solubility of phosphorus and sodium in TiO2-anatase resulted in a decrease in their content in hydrothermally treated coatings. For all the coatings, a favorable change in the stress field, to compressive stresses, was observed.
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来源期刊
Materials Chemistry and Physics
Materials Chemistry and Physics 工程技术-材料科学:综合
CiteScore
8.70
自引率
4.30%
发文量
1515
审稿时长
69 days
期刊介绍: Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.
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