http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mechanism and Characteristics of Nano-dispersed Powder by Pulsed Discharge Method
Kwon Young-Soon,Ilyin Alexander P. 한국분말야금학회 2003 한국분말야금학회 학술대회논문집 Vol.2003 No.1
The phenomenon of electrical explosion of conductors is considered in the context of the changes in the energy and structural states of the metal at the stages of energy delivery and relaxation of the primary products of EEC. It is shown that these changes are related to the forced interaction of an intense energy flux with matter and to the subsequent spontaneous relaxation processes. The characteristics of nano-sized metal powders are also discussed.
Kwon, Young-Soon,P. Ilyin, Alexander,V. Tichonov, Dmitrii The Korean Powder Metallurgy Institute 2003 한국분말재료학회지 (KPMI) Vol.10 No.3
Phase contents and elemental composition of ultradispersed powders obtained by the electrical explosion of tin-leadalloy powders are investigated. It is demonstrated that during the explosion and subsequent cooling, surface layers of powder particles are enriched in lead compared to the initial alloy. The thermal stability of powders oxidizing in air is also investigated.
Kwon, Young-Soon,Kim, Jin-Chun,Ilyin, Alexander P.,Nazarenko, Olga B.,Tikhonov, Dmitry V. The Korean Powder Metallurgy Institute 2012 한국분말재료학회지 (KPMI) Vol.19 No.1
Tungsten nanopowders were produced by the method of wires electrical explosion in the different gases. The study of phase and dispersed composition of the powders was carried out. The influence of electrical parameters such as the value of energy input in wire and the arc stage of the explosion was discussed. The factors that make for decreasing the particles size are the lower pressure of surrounding gas and the use of addition of chemically reactive gas.
Kwon, Young-Soon,B. Nazarenko, Olga,P. Ilyin, Alexander The Korean Powder Metallurgy Institute 2003 한국분말재료학회지 (KPMI) Vol.10 No.3
The feasibility of obtaining highly dispersed aluminum oxide powders by the electrical explosion of aluminum conductors in an inert gas atmosphere and the subsequent oxidation of aluminum particles by water prior to their contact with air is demonstrated. For a specific surface area of the initial aluminum powder of 6.5$m^2$/g, the corresponding specific surface area of the resultant aluminum oxide nanopowder was as large as 300$m^2$/g.
Electroexplosive Technology of Nanopowders Production: Current Status and Future Prospects
Kwon, Young-Soon,Kim, Jin-Chun,Ilyin, Alexander P.,Nazarenko, Olga B.,Tikhonov, Dmitry V. The Korean Powder Metallurgy Institute 2012 한국분말재료학회지 (KPMI) Vol.19 No.1
The current situation of the nanopowders production technology based on the process of electrical explosion of wires is described. The advantages and disadvantages of the electroexplosive technology are indicated. The results of studies characterizing the effect of the electrical explosion conditions on the nanopowders properties are presented, including latest results: conditions of nanopowders passivation, conditions of nanopowders production having narrow size distribution, the methods of nanopowders diagnostic and standartization. In addition, the application and area of future research on this technology are proposed.
Characteristics of Nano-dispersed Powder by Electric Explosion of Conductors
Kwon, Young-Soon,Kim, Ji-Soon,Moon, Jin-Soo,Kim, Hwan-Tae,Ilyin, Alexander-P,Rhee, Chang-Kyu,Rim, Geun-Hie The Korean Powder Metallurgy Institute 2003 한국분말재료학회지 (KPMI) Vol.10 No.6
The phenomenon of electrical explosion of conductors is considered in the context of the changes in the energy and structural states of the metal at the stages of energy delivery and relaxation of the primary products of EEC. It is shown that these changes are related to the forced interaction of an intense energy flux with matter and to the subsequent spontaneous relaxation processes. The characteristics of nano-sized metal powders are also discussed. The preferential gas media during EEC is Ar+$H_2$. An increase in $e/e_s$ (in the range of values studied) leads to a reduction in the metal content. For reactive powders obtained with high metal content, it is necessary to separate the SFAP fractions, which settled on the negative electrode of the electric filter.
Preparation of Nano Metal Carbide Powders by Electric Explosion of Conductors in Liquid Hydrocarbons
Kwon, Young Soon,Kim, Ji Soon,Kim, Hwan-Tae,Lee, Hyun Kyu,Nazrenko, Olga,Ilyin, Alexander 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.6
The phase and elemental compositions of nanopowders prepared by electric explosions of tungsten and aluminum wires in liquid hydrocarbons have been investigated. The output of saturated carbide phases increases with increasing density and dynamic viscosity of the working medium. By means of electric explosions of tungsten wires in liquid hydrocarbons, highly dispersed tungsten carbide powders could be prepared having particle sizes ranging from 0.1 to 5 ㎛.