Abstract
Tungsten-containing hard alloy wastes recycling into powder is considered to be essential nowadays. They can be parts of microns up to thousands of microns depending on powder production methods. The method of electro-erosive dispersion is one of the most promising methods of powder production using any conductive. The method of electroerosive dispersion is characterized by low energy consumption, environmental soundness and controllability. In the process of electroerosive dispersion final material composition, properties and structure change in comparison to basic material. The aim of the article is to research powder particles surface obtained by the method of electroerosive disper-sion of tungsten cobalt hard alloy wastes (BK8) in mineral colza oil. In order to recycle BK8 wastes into the powder with a high content of nanoparticles we used electroerosive dispersion system. Mineral colza oil was used as hydrau-lic fluid. The system parameters: electrode voltage - 190…210 V; energy discharge capacitor - 55 mF; repetition rate - 90…110 Hz. The shape and morphology of the particles obtained by electroerosive dispersion method using BK8 wastes in mineral colza oil were studied using scanning electron microscope «QUANTA 600 FEG». It has been observed that this powder consists of regular spherical (ellipsoid) shape particles, irregular shape particles and shrap-nel shape particles.
Highlights
В зависимости от метода получения порошков их размеры могут колебаться в больших пределах, начиная от долей микрон до сотен и даже тысяч микрон
The aim of the article is to research powder particles surface obtained by the method of electroerosive dispersion of tungsten cobalt hard alloy wastes (BK8) in mineral colza oil
The shape and morphology of the particles obtained by electroerosive dispersion method using BK8 wastes in mineral colza oil were studied using scanning electron microscope «QUANTA 600 FEG»
Summary
В зависимости от метода получения порошков их размеры могут колебаться в больших пределах, начиная от долей микрон до сотен и даже тысяч микрон. Форму и морфологию частиц порошков, полученных методом ЭЭД из отходов твердого сплава марки ВК8 в керосине осветительном, изучали на растровом (сканирующем) электронном микроскопе «QUANTA 600 FEG». Установлено, что порошок, полученный методом ЭЭД из отходов твердых сплавов марки ВК8, состоит из частиц правильной сферической формы (или эллиптической), неправильной формы (конгломератов) и осколочной формы.
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