Spark plasma sintering of tungsten carbide nanopowders obtained through DC arc plasma synthesis

Чувильдеев, В. Н.; Blagoveshchenskiy, Yu. V.; Нохрин, А. В.; Болдин, М. С.; Сахаров, Н. В.; Исаева, Н. В.; Шотин, С. В.; Belkin, O. A.; Попов, А. А.; Smirnova, E. S.; Lantsev, E. A.

doi:10.1016/j.jallcom.2017.03.035

Cited by 69 publications

(18 citation statements)

References 38 publications

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“…[49] The high temperature of the plasma enables rapid evaporation of the target material and increased chemical reactivity.A st he vapor travels away from the hot regionso ft he plasma,r apid cooling results in as upersaturated state, which leads to nucleation and growth of NPs. [50] Arc plasma wasu sed to synthesize TiNN Ps by striking Ti metal with at ungsten tip, which resulted in evaporation of the metal to further react with N 2 in the reaction chamber. [51] The NPs are deposited onto the chamberw all and physically collecteda nd suspended in water to generate the solution of NPs.…”

Section: Arc Plasmamentioning

confidence: 99%

Overview of Synthetic Methods to Prepare Plasmonic Transition‐Metal Nitride Nanoparticles

Karaballi

Monfared

Dasog

2020

Chemistry A European J

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The search for new plasmonic materials that are low-cost, chemically and thermally stable, and exhibit low optical losses has garnered significant attentiona mong researchers. Recently,m etal nitrides have emerged as promising alternatives to conventional, noble-metal-based plasmonic materials, such as silver and gold. Many of the initial studies on metal nitridesh ave focused on computational prediction of the plasmonic properties of these materials. In recent years, several synthetic methods have been developed to enableempirical analysis. This review highlightssynthetic techniques for the preparation of plasmonic metal nitride nanoparticles, which are predominantly free-standing, by using solid-state and solid-gas phase reactions, nonthermal and arc plasma methods, and laser ablation. The physical properties of the nanoparticles, such as shape, size, crystallinity, and optical response, obtained with such synthetic methods are also summarized.

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Section: Arc Plasmamentioning

confidence: 99%

Overview of Synthetic Methods to Prepare Plasmonic Transition‐Metal Nitride Nanoparticles

Karaballi

Monfared

Dasog

2020

Chemistry A European J

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“…3 a Schematic diagram illustrating different onset temperatures of sintering of nano- and micro-sized particles [ 44 ]. Relative density of pure WC as a function of initial particle size in BTC b microsize [ 56 ] and c nanosize [ 57 ]. d Relative density of micro and nano WC versus sintering temperature, without holding time [ 40 ].…”

Section: Densification Of Binderless Tungsten Carbidementioning

confidence: 99%

Section: Densification Of Binderless Tungsten Carbidementioning

confidence: 99%

A Review on Binderless Tungsten Carbide: Development and Application

et al. 2019

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HIGHLIGHTS• Establish processing-composition-microstructure-property relationships governing binderless tungsten carbide (BTC).• Highlight the densification improving strategies and toughening methods for BTC.• Provide key challenges as well as the outlook for superior peformance associated with BTC.ABSTRACT WC-Co alloys have enjoyed great practical significance owing to their excellent properties during the past decades. Despite the advantages, however, recently there have been concerns about the challenges associated with the use of Co, i.e. price instability, toxicity and properties degeneration, which necessitates the fabrication of binderless tungsten carbide (BTC). On the other hand, BTC or BTC composites, none of them, to date has been commercialized and produced on an industrial scale, but only used to a limited extent for specialized applications, such as mechanical seals undergoing high burthen as well as high temperature electrical contacts. There are two challenges in developing BTC: fully densifying the sintered body together with achieving a high toughness. Thus, this review applies towards comprehensively summarize the current knowledge of sintering behavior, microstructure, and mechanical properties of BTC, highlighting the densification improving strategies as well as toughening methods, so as to provide reference for those who would like to enhance the performance of BTC with better reliability advancing them to further wide applications and prepare the material in a way that is environment friendly, harmless to human health and low in production cost. This paper shows that the fabrication of highly dense and high-performance BTC is economically and technically feasible. The properties of BTC can be tailored by judiciously selecting the chemical composition coupled with taking into careful account the effects of processing techniques and parameters.

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“…Применение высокочастотных (ВЧ) токов позволило эффективно решить ряд задач: в области синтеза материалов, создания новых источников электромагнитного излучения и плазменных генераторов и т. д. [1][2][3][4][5][6]. В настоящей работе представлены результаты исследования разработанного нами плазменного генератора, частота тока питания которого составляет 66 kHz и который обладает низкой эрозией электродов, высокой стабильностью разряда и образованного им плазменного потока.…”

Section: поступило в редакцию 21 сентября 2018 гunclassified

Генератор Плазмы С Магнитно-Вихревой Стабилизацией И Возможности Его Применения

Чурилов¹,

Николаев²,

Шичалин³

et al. 2019

Письма В Журнал Технической Физики

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Поступило в Редакцию 21 сентября 2018 г.Описаны конструкция плазменного генератора, параметры получаемой плазмы и возможности ее применения для синтеза нанодисперсных порошков и оптической эмиссионной спектроскопии. В основе работы устройства лежит дуговой разряд переменного тока (66 kHz) в струе аргона между охлаждаемыми водой металлическими электродами. Разряд стабилизируется изолирующим потоком газа (гелия, азота, воздуха), который подается тангенциально к оси разряда, и осевым магнитным полем. Плазма между электродами имеет форму цилиндра, удаленного от стенок камеры. Температура и электронная концентрация в сечении плазменного цилиндра изменяются вдоль радиуса и приобретают максимальное и минимальное значение.

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Spark plasma sintering of tungsten carbide nanopowders obtained through DC arc plasma synthesis

Cited by 69 publications

References 38 publications

Overview of Synthetic Methods to Prepare Plasmonic Transition‐Metal Nitride Nanoparticles

Overview of Synthetic Methods to Prepare Plasmonic Transition‐Metal Nitride Nanoparticles

A Review on Binderless Tungsten Carbide: Development and Application

Генератор Плазмы С Магнитно-Вихревой Стабилизацией И Возможности Его Применения

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