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As the industrial electrical discharge machine (EDM) has the defects of high cost and large volume in preparing nanosilver colloid, this study designs a micro-electrical discharge machine (micro-EDM) for preparing nanosilver colloid. This micro-EDM comprises mechanical structure, a PC-Based real-time control system, and a servo circuit. As the electrode-holder of mechanical structure is made by 3D...
This Study synthesized the nanosilver colloid (NSC) via arc discharge. The electric force ionizes the deionized water (DW) inter electrode gap, and the plenty of electrons and ions are attracted by opposite electricity. The electrons and ions strike surface of the electrodes, and sputter the nanosilver particles (NSP). The NSP stably suspend in the DW without surface-active agent. It is a novel and...
The advantage of applying the EDM (electric discharge machine) in the preparation of nano-fluids is that it does not require chemicals, unlike other nano-manufacturing methods that use chemicals to increase particle stability. Moreover, the operation of EDM is simple and without complex processes. This study proposes a discharge success rate measurement system to determine discharge effectiveness...
This study proposed the principle of spark discharge using an EDM system programmable controller as the control core, and further explored the process optimization of nano metal particles. The proposed system was used to change the discharge pulse cycle time and verify the results by spectrophotometer. Its purpose was to increase the concentration, as well as the degree of dispersion and mean particle...
Alumina nanoparticles have been increasingly used in the areas of medicine, biochemistry and industry. A number of chemical methods have been used for the preparation of alumina nanoparticles, including the introduction of surfactants to improve the suspensivity of the nano-sized particles. In this study, alumina (Al2O3) nanoparticles have been fabricated by using Electrical Discharge Machining (EDM)...
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