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RISS 인기검색어
- 검색키워드
- 저자 : Urakaev, Farit (검색결과 8 건)
- 무료
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- 유료
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Nano-particles of Mechanochemical Synthesis
Urakaev, Farit Kh. The Speleological Society 2006 동굴 Vol.71 No.-
A theoretical investigation of the solid phase mechanochemical synthesis of nano sized target product on the basis of dilution of the initial powdered reagent mixture by another product of an exchange reaction is presented. On the basis of the proposed 3 mode particle size distribution in mechanically activated mixture, optimal molar ratios of the components in mixture are calculated, providing the occurrence of impact friction contacts of reagent particles and excluding aggregation of the nanosized particles of the target reaction product. Derivation of kinetic equations for mechanochemical synthesis of nanoscale particles by the final product dilution method in the systems of exchange reactions is submitted. On the basis of obtained equations the necessary times of mechanical activation for complete course of mechanochemical reactions are designed. Kinetics of solid phase mechanosynthesis of nano TlCl by dilution of initial (2NaCl+$Tl_2SO_4$) mixture with the exchange reaction product (diluent,$zNa_2SO_4$, z=z*=11.25) was studied experimentally. Some peculiar features of the reaction mechanism were found. Parameters of the kinetic curve of nano TlCl obtained experimentally were compared with those for the model reaction KBr+TlCl+zKCl=(z+1) KCl+TlBr (z=z1*=13.5), and for the first time the value of mass transfer coefficient in a mechanochemical reactor with mobile milling balls was evaluated. Dynamics of the size change was followed for nanoparticle reaction product as a function of mechanical activation time.
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nano-particles of Mechanochemical Synthesis
( Farit Kh ),( Urakaev ) 한국동굴학회 2006 동굴 Vol.71 No.-
A theoretical investigation of the solid phase mechanochemical synthesis of nano sized target product on the basis of dilution of the initial powdered reagent mixture by another product of an exchange reaction is presented. On the basis of the proposed 3 mode particle size distribution in mechanically activated mixture, optimal molar ratios of the components in mixture are calculated, providing the occurrence of impact friction contacts of reagent and excluding aggregation of the nanosized particles of the target reaction product. Derivation of kinetic equations for mechanochemical synthesis of nanoscale particles by the final product dilution method in the systems of exchange reactions is submitted. On the basis of obtained equations the necessary times of mechanical activation for complete course of mechanochemical reactions are designed. Kinetics of solid phase mechanisynthesis of nano TICI by dilution of initial (2NaCl + TI2SO4) mixture with the exchange reaction product (diluents, zNa2SO4, z= z* = 11.25) was studied experimentally. Some peculiar features of the reaction mechanism were found. Parameters of the kinetic curve of nano TICI obtained experimentally were compared with those for the model reaction KBr + TICI + zKCI = (z+1) KCI + TIBr (z= z1* = 13.5), and for the first time the value of mass transfer coefficient in a mechanichemical reactor with mobile milling balls was evaluated. Dynamics of the size change was followed for nanoparticle reaction product as a function of mechanical activation time.
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소대화 ( Dea Wha Soh ),( Urakaev Farit ) 한국동굴학회 2006 동굴 Vol.74 No.-
한·러 국제협력 시대 - 냉전의 철벽이 무너지고 사회주의 종주국이었던, 구소련이 개방주의를 천명한지 어언 10여년이 흘러간 오늘, 나는 홀연히 서서 그 동안 시장경제를 부르짖으며 개방화에 박차를 가해 경제대국의 꿈을 이뤄보려고 13억 인구가 뒤엉켜 붙은 밀가루 반죽 같은 중국대륙을 거쳐, 러시아 및 CIS 국가사회를 드나들며 오로지 자신만이 인정하는 소위 학술문화교류협력활동이라는 유명무실한 명분 앞에서 조용히 자신을 돌이켜보는 소중한 시간으로, 시베리아방문탐사 활동에 참여해 서로를 믿고 돕는 마음으로 국익을 위해 활동하는 우리 조사단원들과 함께 웃으며 지내던, 그 날들을 회고해 보는 틈새를 만끽해보고자 과감히 붓을 들어 키보드를 때리면서 조용히 변화하는 운율의 감상에 젖어보며, 한·러 문화협력 강화시대의 문을 열어 한국동굴학회가 추구하는 "동북-중앙아시아지역 동굴과학정보망 구축"의 국제화사업이 성공적으로 추진되기를 희망하며, 한국동굴학회의 발전을 기원합니다.
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소대화,Soh, Dea-Wha,Urakaev, Farit 한국동굴학회 2006 동굴 Vol.74 No.-
한 러 국제협력 시대 - 냉전의 철벽이 무너지고 사회주의 종주국이었던, 구소련이 개방주의를 천명한지 어언 10여년이 흘러간 오늘, 나는 홀연히 서서 그 동안 시장경제를 부르짖으며 개방화에 박차를 가해 경제대국의 꿈을 이뤄보려고 13억 인구가 뒤엉켜 붙은 밀가루 반죽 같은 중국대륙을 거쳐, 러시아 및 CIS 국가사회를 드나들며 오로지 자신만이 인정하는 소위 학술문화교류협력활동이라는 유명무실한 명분 앞에서 조용히 자신을 돌이켜보는 소중한 시간으로, 시베리아방문탐사 활동에 참여해 서로를 믿고 돕는 마음으로 국익을 위해 활동하는 우리 조사단원들과 함께 웃으며 지내던, 그 날들을 회고해 보는 틈새를 만끽해보고자 과감히 붓을 들어 키보드를 때리면서 조용히 변화하는 운율의 감상에 젖어보며, 한 러 문화협력 강화시대의 문을 열어 한국동굴학회가 추구하는 "동북-중앙아시아지역 동굴과학정보망 구축"의 국제화사업이 성공적으로 추진되기를 희망하며, 한국동굴학회의 발전을 기원합니다.
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Abrasive-reaction Interactions for Nano-composite Structures
( Ketegenov T ),( Tyumentseva O ),( Kasymbecova D ),( Korobova N ),( Katranova Z ),( Urakaev F ) 한국동굴학회 2006 동굴 Vol.71 No.-
New methods of nano sized material and composite coating preparations have been considered on the base of mathematical model of abrasion reaction interaction of milling and grinding bodies in planetary centrifugal mill. The essence of the method is the abrasive and oxidative wear of the milling bodies and amorphous (better inert) additives. Interactions between them has been supplied the necessary impulse of pressure and temperature on the impact frictional contacts and promoted chemical processes. The offered method can find application for such processing as sintering and geological minerals opening.
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Abrasive-reaction Interactions for Nano-composite Structures
T., Ketegenov,O., Tyumentseva,D., kasymbecova,N., Korobova,Z., Katranova,F., Urakaev The Speleological Society 2006 동굴 Vol.71 No.-
New methods of nano sized material and composite coating preparations have been considered on the base of mathematical model of abrasion reaction interaction of milling and grinding bodies in planetary centrifugal mill. The essence of the method is the abrasive and oxidative wear of the milling bodies and amorphous (better inert) additives. Interactions between them has been supplied the necessary impulse of pressure and temperature on the impact frictional contacts and promoted chemical processes. The offered method can find application for such processing as sintering and geological minerals opening.
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