IDEA #4CL438 Technology Of Obtaining The Oxide Nanopowders With Specified Chemical,Phase And Granulometric Composition,Ceramics And Composites On Their Base

THE SCIENCE AND TECHNOLOGY CENTER IN UKRAINE Fig. 1. Structure of 3Y ZrO2 powders TECHNOLOGY OF OBTAINING THE OXIDE NANOPOWDERS WITH SPECIFIED CHEMICAL,PHASE AND GRANULOMETRIC COMPOSITION,CERAMICS AND COMPOSITES ON THEIR BASE Description Technology of obtaining the oxide nanopowders with spec(cid:28) ified chemical, phase and granulometric composition based on wet(cid:28)chemicals methods with using MW radiation, pulse magnetic field and ultrasonic for prevention agglom(cid:28) eration.We obtain ZrO2 (0–8% Y2O3) powders with pre(cid:28) determined particle size in range from 5 to 30 nm, narrow size distribution and specific surface area 140–20 m2/g, respectively with soft agglomerates for ceramics, compos(cid:28) ites and solid oxide fuel cell (SOFC) applications.We obtained TiO2 (anatase) powders with predetermined par(cid:28) ticle size in range from 5 to 25 nm, narrow size distribution, specific surface area from 150 to 50 m2/g and soft agglom(cid:28) erates for catalyst and UV(cid:28)protects and TiO2 (rutile) powders with size (30–50 nm).We obtained LaSrMnO3 powders with narrow size distribution (12–15 nm) and bimodal size distribution (40, 200 nm) for magnetic sen(cid:28) sors and SOFC cathodes.And other oxide powders (PZT, Al2O3 based, for example).We have a pilot line for nanopowders obtaining.We obtain zirconia and/or alumi(cid:28) na ceramics with small grains for wear(cid:28)resistant, structur(cid:28) al, instrumental and functional applications. We obtain porous ceramics for medicine, catalysts, filters and SOFC electrodes. We can obtain nanocomposites with metal, ceramics and polymer matrix. We obtain PZT ceramics. Innovative Aspect and Main Advantages Our technology in compare with other one ensure: – more narrow particle size distribution; – lower degree of agglomeration; – predetermined particle sizes in the range of 5 to 50 nm; – high homogenious component distribution; – low synthesis temperature (400–700 °C); – eliminating the mechanical grinding stage; – easy scale(cid:28)up in manufacturing; – low sintering temperature (1250–1350 °C) – high performance of ceramics including homogenity, Fig. 2. Ceramic details for polygraph Metallurgy – refractory structural elements, cutting tools, guides, crucibles, paints Medicine – bio(cid:28)compatible implants, stomatologies mate(cid:28) rials, filters, ion(cid:28)exchangers, UV(cid:28)protect, antibacterial coverages, capsules, test(cid:28)investigation. Environmental – water purification and desalination Electronics – insulators, dies for light guides, sensors Stage of Development Tested, available for demonstration, field tested. We are ready to decided users concrete tasks directed on nanopowders and ceramics articles manufacturing with scientific investigations on the first stage and technology development and sending powders and ceramics specimens for testing. Contact Details Material Science department Donetsk Institute of Physics & Engineering NASU Str. R. Luxemburg 72, Donetsk 83114, Ukraine Konstantinova Tetyana Evgenevna Danilenko Igor (062) 311(cid:28)11(cid:28)21(062) 337(cid:28)75(cid:28)13 tatjana@konstant.fti.ac.donetsk.ua www.donphti.ac.donetsk.ua SCIENCE AND INNOVATION. Special Issue, 2007 stability and durability; – lifetime of the ceramics mine pump plunger from zirco(cid:28) nia nanopowders is 15–20 times longer than usually – production of precise articles and films; – lower cost, environmentally friendly – lower energy consumption. Areas of Application Power Engineering – SOFC, thermal stable coatings for turbine blades Mining Industry – rods, plungers, injectors Chemical Industry – parts of pumps (breechblocks, valves, plungers) injectors, milling balls, catalysts, sorbents, paints 12