1)ultrafine powders超微粉末
1.In this paper,SrLa xFe 12-x O 19 ultrafine powders were synthesized by citrate method.本文首次利用柠檬酸法合成了SrLaxFe12-xO19超微粉末。
2.Zro_2+9mol%Y_2O_3 ultrafine powders, with Zr(OC_3H_7)_4 and Y(CH_3COO)_3 as percursors, were prepared by sol-gel method.以自制Zr(OC_3H_7)_4和Y(CH_3COO)_3为原料,应用溶胶、凝胶法制备了组份为ZrO_2-9mol%Y_2O_3超微粉末。
3.Tin(OH)3 and Tm_2O_3 ultrafine powders were prepared by precipitation method using alcohol as dispersive and protective reagent.以乙醇为分散剂和保护剂,用沉淀法制备了Tm(OH)_3、Tin_2O_3超微粉末。
英文短句/例句
1.The Research on the Preparation Regularities of Ultra-fine Metal Powders Utilizing Inert Gas Evaporation and Condensation Technique at Reduced Pressures;蒸发凝聚法制备金属超微粉末工艺规律的研究
2.Theoretic analysis of preparation of ultramicro powder through multi-phase oxidation reduction多相氧化还原法制备超微粉末的理论分析
3.The Preparation of Ultrafine Dy-doped TiO_2 and ZrO_2 Ceramic Powders;掺杂稀土Dy元素的TiO_2和ZrO_2超微陶瓷粉末的制备
4.APPLICATION OF WATER-SOLUBILITY POLYMER POWDERS IN THE MORTAR WITH SUPER MICRO-DOSAGE超微掺量水溶性高分子粉末在砂浆中的应用
5.Powered Activited Carbon-UF for Treating Micro-polluted Surface Water粉末活性炭—超滤工艺处理微污染地表水试验研究
6.Alumina is then extracted from the furnace and passed over vibrating sieves to obtain an extremely fine powder with a diameter of less than one micron.将铝氧粉从煅烧炉中提取出来。通过振动筛,筛出直径不足1微米的超细粉末。
7.fine powder, flour, dust, etc细粉末、 精制的面粉、 微细的灰尘
8.The Powder Feeding System for Laser Powder Rapid Micao-Fabrication;激光粉末快速微成形送粉系统的研究
9.Preraration of Alumina Ultrafine Powder by Utrasonic Precipitation Method;超声波—沉淀法制备氧化铝超细粉末
10.Prepartion of Super-fine Iron Powder by Use of FeSO_4.7H_2O;FeSO_4.7H_2O制备超微Fe粉的研究
11.Study of Toughening of PP by Ultrafine SBR Powder超细丁苯粉末橡胶增韧聚丙烯的研究
12.Investigation of Sodium Silicate Binder Modified by Ultra-fine Powder;超细粉末改性水玻璃粘结剂试验研究
13.Study on the MgB_2 Wires and Tapes Fbricated by the Powder in Tube Method;粉末套管法制备MgB_2超导线带材的研究
14.Bulk ultrafine grained materials prepared by consolidation of powder using high pressure torsion高压扭转法制备粉末块体超细晶材料
15.Effect of PEG on solution combustion synthesis of superfine ZrO_2 powdersPEG对溶液燃烧合成超细ZrO_2粉末的影响
16.Preparation and sintering behavior of ultra-fine Mo-30Cu composite powders超细Mo-30Cu复合粉末的烧结行为
17.Preparation of Ultrafine α-Al_2O_3 Powders by Thermal Decomposition of AACHAACH热分解法制备α-A_l2O_3超细粉末
18.New measuring method for dielectric property of ultrafine BaTiO_3 powder超细钛酸钡粉末介电性能测试新方法
相关短句/例句
ultrafine powder超微粉末
1.Pure metal and alloy ultrafine powders were prepared by evaporation condensation process,metal oxide ultrafine powders were prepared by metal alkoxide hydrolysis process and chemical solution precipitation process.作者采用蒸发凝聚法制备了金属基超微粉末 ,采用化学反应法制备了氧化物超微粉末 ,深入研究了超微粉末的制备工艺。
2.Ultrafine powder of ZnO was synthesized using ZnSO 4\57H 2O and Na 2CO 3,and the ture diffraction width of diffraction lines were measured by using the method of X ray powder diffraction, and it can be attained to determinate crystallite size and lattice distortion of the synthesized ultrafine powder,then their quantitative analysis results can be obtained.以ZnSO4·7H2O和Na2CO3为原料,采用化学法合成了ZnO超微粉末。
3.SrFe 12 O 19 ultrafine powder was synthesized by the citrate method.利用柠檬酸法合成SrFe12O19超微粉末,用X射线衍射(XRD)、透射电子显微镜(TEM)、振动样品磁强计(VSM)和Mosbauer谱等技术对粉末的结构、粒径和形貌、性能等进行了观察和测试。
3)ultramicro powder超微细粉末
4)ultrafive Y_2O_3 powdersY_2O_3超微粉末
5)Ultra-micro composite powders超微复合粉末
6)submicron metal超微金属粉末
延伸阅读
超细粉末超细粉末ultrafine powder 超细粉末ultrafine powder颗粒尺寸小于0 .1月m的粉末。最早给出超细粉末定义的是日本的上田良二。现研究和应用最多的是金属、铁氧体及陶瓷超细粉末。 自19世纪60年代胶体化学建立以来,科学家们一直把处于1一1000nln范围的颗粒作为研究的对象。20世纪60年代,在研究小于10nln的金属超细粉末时,日本科学家久宝发现了金属超微粒子的电子特殊性,即超微粒子保持电中性,对比热、磁性和超导性都有影响。这个现象又得到了很多科学工作者的验证。因此,科学界把这一发现命名为久宝效应。久宝效应的发现使科学家们开始了对超细粉末的开发和应用研究,并在电子、化工、冶金、航空、农业、医学等方面取得了一些研究成果。 特性和应用超细粉末所具有的奇特功能,主要是超细粉末的表面效应和体积效应共同作用的结果。当超表1超细粉末的表面能和比表面积┌───┬──────┬───────┬────┐│粒径 │ 表面能 │表面能/总能量 │比表面积││(nnl) │(e限/mol) │ (%) │(mZ/g) │├───┼──────┼───────┼────┤│2 │2 .04 X 1012│35 .3 │452 │├───┼──────┼───────┼────┤│5 │8 .16X10,’│14.1 │181 │├───┼──────┼───────┼────┤│10 │4 .08XIOll │7 .6 │90 │├───┼──────┼───────┼────┤│100 │4 .08X1010 │0 .8 │9 │└───┴──────┴───────┴────┘表2裹面原子数与总原子致之比┌───┬────┬─────────┐│粒径 │原子总数│表面原子/总原子数 ││(nlll)│ (个) │ (%) │├───┼────┼─────────┤│1 │30 │99 │├───┼────┼─────────┤│2 │250 │80 │├───┼────┼─────────┤│5 │4000 │40 │├───┼────┼─────────┤│l0 │30000 │20 │└───┴────┴─────────┘细粉末的粒径为Inm时,颗粒中大约包含30个原子,它们大部分都在颗粒表面,所以每个颗粒都具有极高的表面能。从表1和表2中可以看出超细粉末所具有的表面效应。 在超细粉末的体积效应方面,现已发现,当颗粒小到一定程度后,物质的本性,如金属的比热容、磁性、超导性等便发生变化。
