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首页> 外文期刊>Applied Surface Science >Thermal stability and chemical resistance of (Ti, Al) N-Cu and(Ti, Al) N-Ni metal-ceramic nanostructured coatings
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Thermal stability and chemical resistance of (Ti, Al) N-Cu and(Ti, Al) N-Ni metal-ceramic nanostructured coatings

机译：（Ti，Al）N-Cu和（Ti，Al）N-Ni金属陶瓷纳米结构涂层的热稳定性和耐化学性

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摘要

This work represents the results of research on thermal stability, oxidation resistance at temperatures of up to 800 degrees C and electrochemical behaviour of (Ti,Al)N-(similar to 3at.%)Cu and (Ti,Al)N-(similar to 8at.%)Ni nanocrystalline coatings in acidic and alkaline media. The coatings were deposited by the arc-PVD method with a thickness of approximately 4 pin and crystallite size of less than 20 nm. It has been demonstrated that the composition and properties of the coating structures do not change when the coatings are heated in 10(-4) Pa vacuum at temperatures of 600, 700 degrees C for 1.5 h. Heating up to 800 degrees C caused an increase of crystallite size and reduction microstrain in the crystal lattice of the ceramic phase. The process is accompanied by deterioration of the coating hardness from 48 to 52 to 33-36 GPa. The (Ti,Al)N-Cu and (Ti,Al)N-Ni metal-ceramic nanostructured coatings are characterized by heat resistance up to the temperatures of 700 and 800 degrees C respectively. The coatings under study have tendency for self-passivation and resistance to pitting corrosion. (C) 2016 Elsevier B.V. All rights reserved.
机译：这项工作代表了热稳定性，在高达800摄氏度的温度下的抗氧化性以及（Ti，Al）N-（类似于3at。％）Cu和（Ti，Al）N-（类似到8at。％）在酸性和碱性介质中的镍纳米晶涂层。通过arc-PVD方法沉积涂层，其厚度为约4pin且微晶尺寸小于20nm。已经证明，当在600、700℃的温度下在10（-4）Pa的真空中加热涂层1.5小时时，涂层结构的组成和性质不会改变。加热到800摄氏度会导致微晶尺寸增加和陶瓷相晶格中的微应变降低。该过程伴随着涂层硬度从48 GPa降低到52 GPa到33-36 GPa。 （Ti，Al）N-Cu和（Ti，Al）N-Ni金属陶瓷纳米结构涂层的特征在于分别高达700℃和800℃的温度的耐热性。所研究的涂料具有自钝化和抗点蚀的趋势。 （C）2016 Elsevier B.V.保留所有权利。

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