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粉体
相关语句
  powder
    APPLICATIONS OF HUANG PEIYUN'S DOUBLE LOGARITHMIC EQUATION OF POWDER COMPACTING
    黄培云双对数粉体压制方程的应用
短句来源
    PREPARATION OF ULTRAFINES TiO 2 Al 2O 3 COMPOUND POWDER BY COPRECIPITATION
    共沉淀法制备超细TiO_2-Al_2O_3复合粉体
短句来源
    Aluminum hydroxide colloid was prepared by double hydrolysis method and carbon dioxide injection method with co mmon industrial sludge as the raw material respectively,and then they were calcined at 1100 ℃ to obtain α-Al2O3 powder.
    以工业污泥为原料,分别利用双水解和通入二氧化碳气体的方法制备Al(OH)3(胶体),在1100℃煅烧后制得α-Al2O3粉体
短句来源
    Morphologies,compositions and structures of the sludge, Al(OH)3 colloid and α-Al2O3 powder were characterized by field scanning electron microscopy(FESEM),energy dispersive spectra(EDS) and X-ray powder diffraction(XRD).
    并通过场发射扫描电镜(FESEM)、能量发射能谱(EDS)以及X衍射仪(XRD)研究污泥原料、Al(OH)3(胶体)和α-Al2O3粉体的形貌、成分和结构。
短句来源
    ON IN SITU PREMRATION OF (Ti, Zr)C SOLID-SOLUTION POWDER BY WET-CHEMICAL METHOD
    湿化学法原位制备(Ti,Zr)C固溶粉体
短句来源
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  powders
    New Technique of Producing Nano-sized ZrO_2 Based Powders and Characteristics of the Powders
    ZrO_2基纳米超微粉生产技术与粉体特性
短句来源
    Preparation and Characterization of CaO ZrO 2 Powders by Different Drying Methods
    不同干燥工艺制备CaO-ZrO_2复合氧化物粉体粉体性能表征
短句来源
    The results showed that the relationship between pressing pressures and pressed densities of Mo powders under isostatic cool pressing accords fully with huang's formation theory.
    研究结果表明,Mo粉体在冷等静压中压制压力与压坯密度关系完全符合双对数压制理论;
短句来源
    It is found that high-purity TiC-C compound powders can be prepared under vacuum condition whose size is <0.5μm with uniform distribution.
    研究结果表明,在真空条件下可合成出纯度较高的TiC-C复合粉体,其粒径小于0.5μm。
短句来源
    Preparation of dispersive and fine α-Al2O3 platelets was attempted by solid-state reaction at high temperature using commercial gibbsite powders as the primary raw material and with addition of seeds and mineralizer.
    本研究以工业氢氧化铝粉体为原料,加入矿化剂和晶种, 通过高温固相反应制备出分敌均匀的片状α-Al2O3粉体
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  “粉体”译为未确定词的双语例句
    EFFECT OF INJECTING SYNTHETIC POWDERED SLAG ON DEHYDROGENATION OF MOLTEN STEEL
    喷吹粉体合成渣对钢水脱氢的影响
短句来源
    DENITROGENATION OF STEEL BY INJECTIONOF SYNTHETIC SLAG
    喷吹粉体合成渣对钢水脱氮的研究
短句来源
    Preparation and Characterization of Nano-sized CaO-ZrO_2 Ultrafine-Powders
    纳米级CaO-ZrO_2复合氧化物粉体的制备与表征
短句来源
    The results show that the higher ball milling energy may be obtained when the ball-to-powder mass ratio is 20∶1,and rotation speed is 500 r/min. The solid-state reaction between Y2O3 and Al2O can be activated to compose YAlO3(YAP),with mechanical alloy in 10 hours.
    实验结果表明,采用球料比为20∶1,转速为500 r/min,能够获得较高的球磨能量,经10 h机械合金化即可促使Y2O3和Al2O3粉体发生固相反应,合成YAlO3(YAP)。
短句来源
    The span of hardenability value m and elastic ratio M is 2.087~2.468 and 0.908~1.129×108 Pa, respectively.
    Mo粉在压制过程中粉体硬化指数m和弹性模量M的取值范围分别为2.087~2.468和0.908~1.129×108Pa;
短句来源
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  powder
X-ray powder diffraction results show that the as-grown SrWO4 single crystal belongs to tetragonal system and I41/a space group.
      
The structures of the CdSe quantum dots were determined by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM).
      
Tungsten trioxide powder has been prepared from ammonium paratungstate via hydrothermal method using orthogonal and mono-level design of experiments.
      
The blank reference experiment shows that hydrothermal crystallization treatment favors the formation of hexagonal tungsten trioxide, and the tungsten trioxide powder sample prepared by this method has a high degree of crystallinity.
      
According to the Ullman reaction mechanism, the synthesis of 1,5-di(o-anisidino)anthraquinone was achieved by the multiphase reaction of 1,5-dichloroanthraquinone in xylene and o-anisidine in the presence of copper metal powder and potassium acetate.
      
更多          
  powders
Chemical and physical reactions during the low temperature aqueous chemical synthesis of nanostructured Bi2Te3 powders were investigated in-situ by pH measurement, color observation of the solution and X-ray diffraction analysis of the powders.
      
Preparation and characterization of ZrWMoO8 powders with different morphologies
      
ZrWMoO8 powders with different morphologies were obtained using ammonium tungstate, molybdate tungstate and zirconium tungstate as the starting materials by dehydrating the precursor ZrWMoO7(OH)2(H2O)2.
      
TEM photographs of synthesized powders from the sol-gel auto-combustion showed that the crystallites were uniform in size.
      
The magnesium powders used in the fabrication process include nanometer-sized magnesium particles, powders from Alfa Aesar, ordinary off-the-shelf powder, and magnesium chip.
      
更多          
  ultrafine-powder
Nanocrystalline Ag/MgO composites were prepared by the ultrafine-powder-compaction method.
      


The total work of compaction of powders, from zero strain(ε= 0) to in-finite strain (ε= ∞), is derived in this paper to be: a_(total)= Mw (1/d_0-1/d_m) Γ(m + 1)where M is the modulus of compaction of powder, w is the weight of powder,d_0 is the initial density of powder, d_m is the theoretical density of densemetal, m is the index of non-linearity and Γ(m + 1) is the gamma functionof (m + 1). Γ(m + 1) = ∫_0~∞ e~(-8)ε~mdεwhere ε is the strain of compaction, ε=ln((d_m-d_0)d)/((d_m-d)d_0)and d is the green density...

The total work of compaction of powders, from zero strain(ε= 0) to in-finite strain (ε= ∞), is derived in this paper to be: a_(total)= Mw (1/d_0-1/d_m) Γ(m + 1)where M is the modulus of compaction of powder, w is the weight of powder,d_0 is the initial density of powder, d_m is the theoretical density of densemetal, m is the index of non-linearity and Γ(m + 1) is the gamma functionof (m + 1). Γ(m + 1) = ∫_0~∞ e~(-8)ε~mdεwhere ε is the strain of compaction, ε=ln((d_m-d_0)d)/((d_m-d)d_0)and d is the green density of powder compact.The actual work of compaction of powders from ε_1 to ε_2 is derived to be: a = Mw (1/d_0-1/d_m)∫ε_1ε~2 e~(-ε)ε~mdεwhere ∫_(ε_1)~(ε_2)e~(-ε)ε~mdεis the incomplete gamma function of (m + 1), the numer-ical value of which can be evaluated by computers. Examples of calculations for the work of compaction on tungsten powderare given and tabulated.

本文导出了粉体从应变为0(ε=0)到应变无穷大(ε=∞)时的压制总功: α_总=MW(1/d_o-1/d_m)Γ(m+1)式中,M是粉末压制模量,W是粉末的重量,d_o是粉末的原始密度,d_m是致密金属的理论密度,Γ(m+1)是m+1的Γ函数, Γ(m+1)=∫_0~ ∞e~(-ε)ε~mdεε是压制应变, ε=ln(d_m-d_o)d/(d_m-d)d_od是压坯密度,m是非线性指数。还导出了应变从ε_1到ε_2时实际的粉末压制功, α=∫_(ε_1)~(ε_2)e~(-ε)ε~mdε式中,∫_(ε_1)~(ε_2)e~(-ε)ε~mdε是m+1的不完全Γ函数,其函数值可由电子计算机近似求得。文中列表给出了钨粉压制功的计算实例。

In this paper the extended applications of Huang Peiyun's double logarithmic equation of Powder Compacting are emphatically introduced on the basis of isostatically pressing practice. It is recognized that the equation can be turned into non—logarithmic form by mathematic treatment. Experimental data of 11 kinds of powder isostatically pressed show that the above equation has high accuracy and is practical. Tne equation has been analyzed and is indicalive of a mathematic expression of pressure—green density...

In this paper the extended applications of Huang Peiyun's double logarithmic equation of Powder Compacting are emphatically introduced on the basis of isostatically pressing practice. It is recognized that the equation can be turned into non—logarithmic form by mathematic treatment. Experimental data of 11 kinds of powder isostatically pressed show that the above equation has high accuracy and is practical. Tne equation has been analyzed and is indicalive of a mathematic expression of pressure—green density curve for powder compacting. The slop of this curve is as follows:

本文以粉体等静压制实践为依据,着重介绍黄培云双对数粉体压制方程的推广应用。认为通过数学处理可将该式变化为非对数形式 11种粉体等静压制实验数据验证表明,上式精度较高(D_(c计)/D_(c实)=1±0.01),具有实用价值。文中对该式进行了解析,指出上式即为粉体等静压制的压制压力——压坯密度曲线的数学表达式且其斜率为

The concentration distribution of pulverized coal in blowpipe of blast furnace was measured in an isothermal two-phase model by means of a computer measuring system based on infrared transmission. The results show that concentration near the exit of oxygen-coal lance is distributed unsymetrically and that the concentration along the direction of the gas-solid jet is much higher. The concentration distributions in the distance about 2.5 times diameter of blowpipe from the exit of the lance tend to be uniform...

The concentration distribution of pulverized coal in blowpipe of blast furnace was measured in an isothermal two-phase model by means of a computer measuring system based on infrared transmission. The results show that concentration near the exit of oxygen-coal lance is distributed unsymetrically and that the concentration along the direction of the gas-solid jet is much higher. The concentration distributions in the distance about 2.5 times diameter of blowpipe from the exit of the lance tend to be uniform due to the mixing of gas and solid phase rapidly in blowpipe.

利用开发的红外透射法粉体浓度计算机测定系统,在高炉氧煤喷吹气-固两相流动模拟装置上测定了氧煤枪的煤粉浓度场。结果表明,在直吹管内氧煤枪出口前端截面附近,煤粉浓度呈不对称分布状态。在射流流动方向所对应的半径一侧,煤粉浓度较大,但通过调节枪位可以改善这种状况。直吹管内气-固两相的掺混甚为剧烈,使得在氧煤枪出口前端轴向距离为2.5倍,直吹管直径的截面上气-固两相混合均匀。

 
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