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Preparation and Characterization of Y3Sc2Ga3O12 Nano-Polycrystalline Powders by Co-Precipitation Method苏静,张庆礼,邵淑芳,谷长江,万松明,殷绍唐摘 要:In order to grow high...,and the precursor was then sintered at different temperatures.The results showed that the feasible pH range was 8.3~9.84 in the process of co-precipitation reaction.The YSGG precursor and the powders sintered......
STUDY ON PREPARATION OF YBa2Cu3O7-x ULTRAFINE POWDERS BY SOL-GEL PROCESS袁启华,邬江新,唐福龙,黄俊摘 要:<正>The ultrafine powders of YBa2Cu3O7-x withthe size of 100nm were synthesized by Sol-Gel process using cit-rate as complex and ammonium hydroxide to adjust pH of solu-tion. The process of Sol formation and Gel polymerization ofYBa2Cu3O7-x in the Sol-Gel......
FORMATION OF AIN WHISKERS BY NITRIDATION OF AI/AIN POWDERS戴英摘 要:<正>The aluminum nitride whiskers were synthe-sized by the nitridation of Al/AlN powders in a flowing ni-trogen atmosphere. The whiskers were about 0. 5μm in diame-ter and 10~20μm in length, and they were straight and hadsmooth surfaces. The morphology of the whiskers were stud-ied......
Thermal oxidation of SiAlON powders synthesized from coal gangueKuo-chih ChouSchool of Metallurgical and Ecological Engineering,University of Science and Technology Beijing摘 要:The oxidation behavior of different SiAlON phases(β-SiAlON,X-phase SiAlON and 12H powders) synthesized from coal gangue in air atmosphere was investigated using isothermal......
Microstructural Evolution of Rapidly Solidified ZK60 Powders during ExtrusionZhenya Zhang 1,2),Huashun Yu 1),Shaoqing Wang 1),Hui Yu 1) and Guanghui Min 1) 1) Key Laboratory for Liquid-Solid... id="ChDivSummary" name="ChDivSummary">The microstructural evolution of rapidly solidified(RS) ZK60 powders extruded at 250 C was investigated.It was shown that formation of new ultrafine grains took......
Preparation of neodymium-doped yttrium aluminum garnet powders and fibersR. López,J. Zárate,E. A. Aguilar,J. Muoz-Saldaa摘 要:Using nitrate precursors... and yttrium nitrates, citric acid, etilenglycol and neodymium oxide. This solution was dried by pulverization (spray dryer) to obtain aggregated precursor powders of the compound. These aggregates were calcined......
and magnetic properties improvement of Sm2Fe17Nx powders.In this paper, an anisotropic Sm2Fe17Nx powder free ofα-Fe was prepared by ball milling. The magnetically soft Sm2Fe17 powders with different particle... Sm2Fe17Nx powders.关键词:......
Preparation of Al2-xYxW3O12 powders by citrate sol-gel process ZHANG Hai-jun(张海军), ZHANG Qing(张 青), JIA Quan-li(贾全利), YE Guo-tian(叶国田) High Temperature Ceramics Institute, Zhengzhou University...; Abstract: Al2-xYxW3O12 (x=0.2, 0.5, 0.8, 1.0, 1.2, 1.5, 1.7 and 2.0) powders were synthesized by citrate sol-gel process. The concentration......
Preparation of neodymium-doped yttrium aluminum garnet powders and fibers J.Mu1,E.A.Aguilar2,J.Zárate2,R.López2 (1.n)oz-Salda(n)a(n;2.Instituto de Investigaciones Metalurgicas,UMSNH,Morelia,Mich..., a solution was prepared by mixing aluminum and yttrium nitrates, citric acid, etilenglycol and neodymium oxide. This solution was dried by pulverization (spray dryer) to obtain aggregated precursor powders......
. The effect of reflux time on the morphology and the weight loss of MWNTs were investigated. Meanwhile,the dispersion of MWNTs with 0-2.0 wt.% in 2024Al powders using mechanical stirring... the content of MWNTs is less than 1.0 wt.%,MWNTs can uniformly distribute on the surface of 2024Al powders; however,when the content of MWNTs is 2.0 wt.%,MWNTs entangle with each other on the surface......
