Corrosion resistance of Ti-based metallic glass coating in concentrated nitric acid

Li, Congbo; Chen, Weiwei; Jiang, Qisheng; Wang, Lu; Luo, Dijun

doi:10.1016/j.matchemphys.2013.11.061

Cited by 18 publications

(5 citation statements)

References 23 publications

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“…To date, several studies accredited the superior corrosion and wear resistances of bulk metallic glasses based on late transition metals, such as Zr [6,7], Cu [8], Ni [9] or Ti [10][11][12] owing to their structural and chemical homogeneity. For instance, according to the studies of Zander et al [8] and Chen et al [13] the corrosion mechanisms of Cu-based BMGs in NaCl solution is governed by a stable passive film.…”

Section: Introductionmentioning

confidence: 99%

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Binary Zr–Ni/Co metallic glass films: Role of the structural state on their durability

et al. 2015

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Section: Introductionmentioning

confidence: 99%

“…Their final results revealed that passive films formed after electrochemical polarizations are enriched in TiO 2 and ZrO 2 . The Zr-and Ti-oxides are chemically more stable and structurally denser as compared with Cu-oxides, leading to enhanced passive films and to a better protectiveness [10,11].…”

Section: Introductionmentioning

confidence: 99%

Binary Zr–Ni/Co metallic glass films: Role of the structural state on their durability

et al. 2015

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“…For this purpose, architectural coating systems (substrate/metallic bond coat/ceramic coating) are proposed to increase the lifespan of austenitic stainless steel. Various types of coatings, including ceramic ones, have been investigated [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In the past few years, these thin coatings have been elaborated by various physical vapor deposition (PVD) techniques, most notably by reactive magnetron sputtering [6,7,19].…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

et al. 2022

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A clean and defect-free substrate/coating interface is required to guarantee good adhesion of coatings under service conditions. For this purpose, an etching pre-treatment using High-Power Impulse Magnetron Sputtering (HiPIMS) was performed to modify the surface of 304L stainless steel. The effect of three etching procedures on the substrate properties, such as corrosion resistance and adhesion, was investigated with unprecedented spatial resolution and spectroscopic details. Glancing angle X-ray diffraction showed modification in phase content but no neoformation after steel etching. X-ray photoelectron spectroscopy confirmed the presence of etchant species (6–7 at.%) on the extreme surface of the substrate. Transmission Electron Microscopy and Atomic Probe Tomography showed that the interface was less than a few nanometers wide. Polarization curves in a nitric acid solution at boiling temperature showed, for the first time, that the Ti+ and Zr+ etchings decreased the corrosion current density compared to the untreated original surface. Scratch-test measurements indicated better substrate/coating adhesion using HiPIMS metal ion etching. Electrochemical characterization revealed that Zr etching and thin coating improve the anti-corrosion properties of stainless steel in strong nitric acid conditions.

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“…Электроискровые покрытия обладают высокой адгезией с металлической подложкой благодаря интенсивному конвективному пе-ремешиванию металлов в расплавленном состоянии. Примеры формирования электроискровых покрытий из металлических стекол представлены в работах [11,12]. В качестве анодных материалов были использованы ком-мерческие объемные металлические стекла на основе ти-тана и циркония, которые ограничены по химическому составу из-за требований к высокой стеклообразующей способности, а также дороги в изготовлении.…”

Section: Introductionunclassified

Development and study of FeWMoCrBC metallic glass coatings synthesized by electrospark deposition

Бурков¹,

Pyachin²,

Zaytsev³

et al. 2016

LoM

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The paper is devoted to studying the possibility of creating an amorphous state in the metallic materials in the electrospark action process. Produced by powder metallurgy FeWMoCrBC crystalline alloys of two different compositions that were used as anodes for the coating onto the steel 1035 substrate by electrospark deposition technology. Study of mass transfer kinetics during the deposition of both compositions showed relatively high values of gain cathodes. Thus, the maximum mass transfer efficiency achieved using an electrode with a high iron content due to better adhesion to the steel substrate. It is found that by coating had a thickness of about 40 microns and had the metallic glasses structure from XRD data. Based on the results of differential scanning calorimetry revealed that recrystallization of the coating material occurred at annealing temperature exceeding 814 -825°C. XRD data of the samples after annealing at 1200°C showed that the amorphous structure is crystallized into carbides iron, tungsten and boron; borides iron, molybdenum and tungsten; as well as is observed metallic chromium and tungsten. The surface roughness of coatings was 7 microns. Were conducted tests on the durability of FeWMoCrBC metallic glass coatings to microabrasive wear, and dry sliding abrasion with a silicon carbide abrasive disk. It is shown that the FeWMoCrBC amorphous electrospark coatings improve wear resistance and microhardness of the steel 1035 in 2 -4 times, respectively. In general, despite the significant differences in the composition of the electrode materials obtained from the coating of metallic glasses had very similar properties. Работа посвящена изучению возможности создания аморфного состояния в металлических материалах в процессе электроискрового воздействия. Методом порошковой металлургии получены FeWMoCrBC сплавы двух различных составов, которые использованы в качестве анодных материалов для нанесения покрытий на подожки из стали 35 методом электроискрового легирования. Изучена кинетика изменения масс электродов в процессе осаждения по-крытий. Установлено, что при использовании электрода из FeWMoCrBC сплава с более высоким содержанием же-леза привес катода выше за счет лучший адгезии к стальной подложке. Толщина созданных покрытий составляет около 40 мкм. По данным рентгеновской дифрактометрии покрытия обладают структурой, аналогичной металличе-ским стеклам. На основе результатов дифференциальной сканирующей калориметрии определено, что материал по-крытий начинает кристаллизоваться в процессе нагрева при температурах свыше 781 -786°С. После отжига при тем-пературе 1200°С в электроискровых покрытиях наблюдаются карбиды железа, вольфрама и бора; бориды железа, молибдена и вольфрама; а также хром и вольфрам как отдельные фазы. Шероховатость покрытий по критерию Ra была около 7 мкм. Испытания стойкости покрытий из металлических FeWMoCrBC стекол к микроабразивному из-носу, а также сухому трению об абразивный диск из карбида кремния, показали, что износостойкость аморфных электроискровых покрытий выше износо...

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Corrosion resistance of Ti-based metallic glass coating in concentrated nitric acid

Cited by 18 publications

References 23 publications

Binary Zr–Ni/Co metallic glass films: Role of the structural state on their durability

Binary Zr–Ni/Co metallic glass films: Role of the structural state on their durability

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

Development and study of FeWMoCrBC metallic glass coatings synthesized by electrospark deposition

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