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   润湿角 在 无机化工 分类中 的翻译结果: 查询用时:0.746秒
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润湿角
相关语句
  wetting angle
    The glaze surface with low surface roughness was gained when lgηis between 2.65~3.15, surface tension between 350~380 m(N·m)~(-1), and the wetting angle of glaze melt on body between 30~15°.
    实验表明:当lgη(粘度的对数)在2.65~3.15之间、表面张力介于350~380m·(N·m)~(-1)、釉熔体对坯体的润湿角在30~15°之间时,可以形成粗糙度较小、质量良好的釉面。
短句来源
    When the amount of silane coupling agent is 2%(mass),the activated index of modified product,wetting angle to water and settling time are 98.7%,0~93.21° and 0.5 h to 176 h respectively. Its dispersibility and stability in coating can be improved.
    当硅烷偶联剂添加质量分数由0增加到2%,改性产品的活化指数由0增加到98.71%,对水的润湿角由0°增加到93.21°,沉降时间由0.5 h增加到176 h,在涂料中的分散性和贮存稳定性得到改进。
短句来源
    Determination of Wetting Agent Content in plating Bath by Wetting Angle Technique
    润湿角法确定镀液中润湿剂含量
短句来源
    and hardness H_R=91~92. (3)Microstructure and wetting angle measurement-the electron micrographs have re-vealed that the hot-pressing bodies have a texture of equiaxial grains of silicon nitride inter-laced with fiberous grains.
    硬度H_R=91~92。 (3)热压氮化硅微观结构观察和润湿角测定。
短句来源
    From both theoretical and experimental results, it can be concluded that the relative adsorption coefficient, adsorption equilibrium cosntant, wetting angle and impregnating time may profoundly affect the distribution of catalyst active species in its support.
    研究表明:吸附平衡常数、相对吸附系数、润湿角及浸渍时间等参数对载体催化剂内活性前体的浓度分布具有显著影响。
短句来源
  contact angle
    Under the applied experimental conditions the contact angle of pure Ni/SiC ceramic at 1 350 ℃ in vacuum is about 86°.
    1 3 50℃真空中Ni/SiC陶瓷系统的润湿角约为 86°.
短句来源
    The results showed that the contact angle was not only related to the molar ratio of SiO 2 to TiO 2,but also related to the SiO 2 distributions on the coating. When the ratio was between 0.08 and 0.13,the contact angle became about 5°.
    结果表明 ,水润湿角与SiO2 /TiO2 的摩尔比和SiO2 在TiO2 表面的分布有密切关系 ,当SiO2 /TiO2 的比值在 0 0 8-0 1 3时 ,涂层的水润湿角在 5°左右。
短句来源
    For amorphous films the contact angle decreases from 34 °to 22 °and for the films refer to 280 ℃ and 420 ℃, the contact angle decreases from 24 °and 18 °to 5 °, respectively.
    在相同时间的紫外线照射下 ,非晶TiO2 膜的润湿角从 34°降低到 2 2° ,而结晶完好的试样的润湿角从 18°~ 2 4°降低到 5°
短句来源
    The wettability of AIN surface with Al is improved by metallization and the contact angle is decreased from 114.4° to 49.7° at 1000℃.
    研究表明,金属化处理显著改善了AlN陶瓷表面与金属Al的润湿性能,在1000℃下,润湿角从114.4°降至49.7°.
短句来源
    The influences of the amount of SiO 2 addition and the coating cycle times of TiO 2-SiO 2 thin films on the microstructure, transmittance, contact angle of water and photocatalytic activity of TiO 2-SiO 2 thin films were investigated by using heating microscope, SEM and spectrophotometer.
    利用高温显微镜、SEM、红外光谱 (IR)和分光光度计 ,研究了SiO2添加量和镀膜层数对润湿角、薄膜微结构、透过率、光催化活性的影响 .
短句来源
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  “润湿角”译为未确定词的双语例句
    SiO_2 and 2MgO. SiO_2 melts approaches 20°. Therefore it may be reasonably thought that the liquid phaseformed at high temperatures would take an important part in sintering process.
    Si_3N_4与MgO·SiO_2和2MgO·SiO_2的润湿角接近20°,表明它是有液相参与的烧结。
短句来源
    Then the relation is looked for both the volume coefficient of transferring mass and the liquid-solid angle of moistening packing surfacr.
    并且寻找出填料固-液润湿角与体积传质系数的关系。
短句来源
    The properties of the films are the best. Additionally, SiO 2 and TiO 2 form single oxide particles in the film, but a minor part of complex oxide may be formed due to the existance of Ti—O—Si vibration in the IR spectrum.
    当SiO2添加量为 10 %时 ,3层TiO2 -SiO2 薄膜的润湿角接近 0°,光催化活性为光照 2h甲基橙溶液降解率 5 3 % ,其性能最佳 .
短句来源
  相似匹配句对
    Determination of Wetting Agent Content in plating Bath by Wetting Angle Technique
    润湿法确定镀液中润湿剂含量
短句来源
    and hardness H_R=91~92. (3)Microstructure and wetting angle measurement-the electron micrographs have re-vealed that the hot-pressing bodies have a texture of equiaxial grains of silicon nitride inter-laced with fiberous grains.
    硬度H_R=91~92。 (3)热压氮化硅微观结构观察和润湿测定。
短句来源
    Queries About The Angular Coefficient
    关于系数的讨论
短句来源
    the angular distributions of secondary neutrons ;
    次级中子分布;
短句来源
    Wetness and Mass Transfer of Packing
    填料的润湿和传质
短句来源
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  wetting angle
The calculations are made in the range of variation of the parameters, the wetting angle and the Bond number, adjoining the boundary of the stability region.
      
For fixed volume of the fluid and different values of the angular velocity and the wetting angle the decay rate and frequency of the characteristic oscillations are calculated.
      
A nonuniform temperature distribution, the presence of surface-active substances and impurities, and also other factors lead to a change in the wetting angle along a plane.
      
The Effect of Wave Formation and Wetting Angle on the Thermocapillary Breakdown of a Falling Liquid Film
      
Different working liquids and coatings of the working surface are used in the experiments to investigate the effect of the wetting angle on the film breakdown.
      
更多          
  contact angle
With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased.
      
As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant.
      
The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50°C.
      
Surface energy of preservative-treated southern yellow pine (Pinus spp.) by contact angle measurement
      
Based on the contact angle data, the surface energy was obtained from the acid-base approach.
      
更多          


The present paper which has been chiefly contributed toward a studying on hot-pre-ssing silicon nitride doped with 5%(wt) magnesia is divided into three sections:(1)Manufacture——by proper choice of flowing rate of gases, temperature and duration ofnitridation, we have succeeded in preparing a raw material containing 90~95%ofα-siliconnitride.The selection of technological parameters of hot-pressing including temperature,pressure and time are described.(2)Physical and mechanical properties——the bending strength...

The present paper which has been chiefly contributed toward a studying on hot-pre-ssing silicon nitride doped with 5%(wt) magnesia is divided into three sections:(1)Manufacture——by proper choice of flowing rate of gases, temperature and duration ofnitridation, we have succeeded in preparing a raw material containing 90~95%ofα-siliconnitride.The selection of technological parameters of hot-pressing including temperature,pressure and time are described.(2)Physical and mechanical properties——the bending strength of specimens preparedunder optimun technological conditions is 7500~8200kg/cm~2 at room temperature or 7000kg/cm~2at 1100℃, and it begins obviously to decrease at 1200℃. The specimens prepared are qui- te resistant to oxidation up tO 1200℃, however at 1400℃ their oxidation rate is rapidlyincreased, the weight gain in an air environment at 1300℃ obnys roughly the parabolicrule.The abrasion coefficient is considerably small at wearing against steel №45, the dryabrasion coefficient is determined to be 0.5, and it is lowered further down to 0.09~0.11while the wearing parts have been lubricated.Thermal expansion coefficients from roomtemperature to 1200℃ are α=1.75~2.95×10~(-5). and hardness H_R=91~92. (3)Microstructure and wetting angle measurement-the electron micrographs have re-vealed that the hot-pressing bodies have a texture of equiaxial grains of silicon nitride inter-laced with fiberous grains. The wetting angle of silicon nitride by MgO .SiO_2 and 2MgO.SiO_2 melts approaches 20°.Therefore it may be reasonably thought that the liquid phaseformed at high temperatures would take an important part in sintering process. Finally, the effects of technological parameters on the strength of hot-pressing siliconnitride were also discussed, and therefrom the approaches to the improvement of hightemperature strength were suggested.

本文主要研究添加5%(重量)MgO为助熔剂的热压氮化硅系统,分为以下三部分: (1)氮化硅制备工艺。通过选择适当氮化温度、时间和气体流量,能制备α相控制在90~95%范围内的Si_3N_4粉末。同时叙述了热压工艺:包括温度、压力,保温时间等工艺参数的选择。 (2)热压氮化硅机械物理性能:室温强度在7500公斤/厘米~2~8200公斤/厘米~2,1100℃时强度为7000公斤/厘米~2,1200℃时开始下降明显,1200℃以下抗氧化性良好,1400℃氧化速率迅速增加,1300℃的氧化增重基本上符合抛物线规律;摩擦系数小,与45~*钢对磨时干摩擦系数为0.5,有润滑油情况下,为0.09~0.11;从室温到1200℃的膨胀系数α=1.75~2.95×10~(-6);硬度H_R=91~92。 (3)热压氮化硅微观结构观察和润湿角测定。电镜照片表明其织构主要由纤维状形貌颗粒和部分等轴形貌颗粒组成。Si_3N_4与MgO·SiO_2和2MgO·SiO_2的润湿角接近20°,表明它是有液相参与的烧结。 本文还对一些工艺因素变化与强度关系进行讨论,并指出进一步改进高温强度的途径。

For the method of dry impregnation, an imbibition-adsorption model is proposed and its numerical solution has been obtained. From both theoretical and experimental results, it can be concluded that the relative adsorption coefficient, adsorption equilibrium cosntant, wetting angle and impregnating time may profoundly affect the distribution of catalyst active species in its support.

建立了制备载体催化剂干法浸渍步骤的过程模型,给出了该模型的数值解法,并用实验对模型加以检验。研究表明:吸附平衡常数、相对吸附系数、润湿角及浸渍时间等参数对载体催化剂内活性前体的浓度分布具有显著影响。

A method of determination for wetting Agent content in plating bath is described by surface tension or wetting angle technique. A simple and practical method is provided for plating technology and research.

本文介绍了用测定镀液表面张力或润湿角的方法来确定镀液中润湿剂的含量,为电镀工艺和电镀的研究工作提供了一种简便可行的物理化学测试方法。

 
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