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润湿角
相关语句
  wetting angle
    Make use of dripping experiment to test the wetting angle of materials undergoing surface treatments, which is 32° .
    利用水滴实验法测得经过表面处理后,其润湿角θ为32°。
短句来源
    The melt infiltration can be taken spontaneously when the wetting angle is below 90°, but it needs outer pressure when the wetting angle is above 90°.
    润湿角小于90°时可以实现自发浸渗,当润湿角大于90°时则需要外加压力才能浸渗。
短句来源
    Furthermore, the relationship between critical cooling rate R c for glass formation and wetting angle θ has also been predicted.
    通过分析润湿角因子 f(θ)对合金形核与结晶过程的影响 ,获得了非晶态凝固所需临界冷却速率 Rc 与润湿角θ之间的关系
短句来源
    The wetting angle between the copper mold and Zr-Al-Cu-Ni alloy melt is rather big, so the glass forming ability is strong.
    由于Zr Al Cu Ni合金与铜型之间的润湿角很大 ,因而形成玻璃能力强 ;
短句来源
    The wetting angle of Al molten metal and Si3N4 substrate was measured t-hrough sessile drop technique and the relation between wetting angle and infiltration temperature was analyzed.
    利用座滴定法测试了Al在Si3N4基片上的润湿角,分析了润湿角与浸渗温度的关系。
短句来源
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  contact angle
    ZrO2 and metal Ni show no wettability in vacuum with a contact angle of 117 . And how to improve the wetting of ceramics by liquid metals has great significance to the preparation of high performance YSZ-Ni cermets.
    由于ZrO_2与金属Ni在真空中润湿角为117°,为不完全润湿。 所以研究如何改善金属润湿性对制备高性能YSZ-Ni金属陶瓷复合材料有着重要的意义。
短句来源
    The result showed that within the extent of Ce≤0.7% the contact angle θ increases slightly when the Ce content is raised.
    结果表明,在Ce≤0.7%范围内,随含Ce量增高,铝—石墨润湿角θ略有增高;
短句来源
    The contact angle of liquid Ag with solid W and its temperature dependance were examined by sessile drop method under various atmospheres, e.g.vacuum, Ar, H_2 and cracked NH_3. The O_2 partial pressure in the atmosphere is found to be the major factor.
    用座滴法研究了Ag/W在真空,Ar,H_2及3H_2+N_2气氛下的润湿角及其与温度的关系,并进行了表面及界面分析。
短句来源
    This paper theoretically analyzes the wettability of boron carbide by liquid aluminum and discusses the wettability difference between theoretical and practical results based on the characteristics of aluminum and its interaction with boron carbide. Then, it makes a study of the methods and processing to improve wetting through experiments, whose results show that increasing the temperature might improve the wetting. With the temperature increased form 1 050℃ to 1 100℃, the contact angle θ will decease from 52° to 23°.
    依据金属Al的特性及其与B4C相互作用的关系,在理论上分析Al对 B4C的润湿性,分析理论润湿性与实际润湿性差异的原因,在此基础上,通过实验寻求改善Al对B4C润湿性的方法和工艺,发现升高温度可以改善润湿性,温度由 1 050℃升至1 100℃时,润湿角θ由52°降至23°;
短句来源
    Microstructure study and XRD phase analysis indicate that interfacial reactions take place in the RB SiC/pure Co system,leading to the formation of CoSi,and resulting in the decreasing of the contact angle;
    微观结构研究和XRD分析表明,对于SiC/纯Co体系,界面区域发生了化学反应,生成了CoSi,减小了润湿角
短句来源
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  “润湿角”译为未确定词的双语例句
    The contact angles of molten Al alloys,Al-9%Si,Al-13%Si and Al-18%Si with SiC are measured by the sessile drop method in vacuum.
    用座滴法测定了真空条件下Al-9%Si、Al-13%Si、Al-18%Si三种铝合金与SiC的润湿角
短句来源
    With a little amount of magnesium added into aluminum,θ may decrease from 23° to 9° under the condition of vacuum of 1×10-3 Pa, at 1 100℃ ×3 h.
    在Al中添加小量Mg后,真空 1×10-3Pa,温度1 100℃×3 h时Al对B4C润湿角由原来的23°降至9°。
短句来源
    The relatively small contact angles of the RB SiC/Co-Cr system are obtained with the Cr content of 5%,7% and 42%,respectively.
    当体系的Cr含量分别为5%,7%和42%时,体系的润湿角较小,润湿性比较好。
短句来源
    Compared with untreated graphite, all of the composite powders have decreased the contact angles with water, when Al2O3 coating volume up, the angle decrease also.
    各种复合粉体与水的润湿角都比未处理石墨降低,包覆氧化铝还发现随着包覆率增大,润湿角降低。
短句来源
    The results show that Nb and Ce markedly decrease the wetting angleand make wetting happen. The mechanism of Nb to wettability is that the ele-ment is adsorbed on the interface.
    试验表明:加入 Nb,Ce 可以使润湿角显著下降,由不润湿转化为润湿.
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.
      
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  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.
      
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The effect of Ce on the wettability of liquid aluminum-graphite was investigated by the sessile drop at 700℃ and under the condition of perfect vacuum. The result showed that within the extent of Ce≤0.7% the contact angle θ increases slightly when the Ce content is raised. The relationship between the surface tension γ and Ce content appears as the dependence of a quadratic curve and the value γ obtained is the maximum when Ce=0.36%. However the adhesion and immersion of the lipuid aluminum-graphite decreases...

The effect of Ce on the wettability of liquid aluminum-graphite was investigated by the sessile drop at 700℃ and under the condition of perfect vacuum. The result showed that within the extent of Ce≤0.7% the contact angle θ increases slightly when the Ce content is raised. The relationship between the surface tension γ and Ce content appears as the dependence of a quadratic curve and the value γ obtained is the maximum when Ce=0.36%. However the adhesion and immersion of the lipuid aluminum-graphite decreases slightly. The analysis showed that although the influence of γ and θ on the process of adhesion and immersion at the same time, the influence of θ is much bigger than that of γ.

用座滴法在700℃和高真空条件下研究了含铈量对铝—石墨润湿性的影响规律。结果表明,在Ce≤0.7%范围内,随含Ce量增高,铝—石墨润湿角θ略有增高;表面张力γ与含Ce量则成二次曲线关系,在Ce=0.36%处γ取得极大值。Ce的加入使铝—石墨的附着功与润湿功有所下降,因而对其润湿性稍许有不利的影响。分析表明。尽管γ和θ同时对附着和浸渍过程起作用,但θ的作用要比γ的作用更大。

The effect of Nb and Ce on the interface wettability,interac-tion,structure and combining strength between Al_2O_3 and medium Mn steel wasstudied.The results show that Nb and Ce markedly decrease the wetting angleand make wetting happen.The mechanism of Nb to wettability is that the ele-ment is adsorbed on the interface.So the interface is a kind of mechanical orwettable combination.The mechanism of Ce to wettability is that the Ce canreact with Al_2O_3 at the interface.The CeAlO_3 is formed as a reactant.So...

The effect of Nb and Ce on the interface wettability,interac-tion,structure and combining strength between Al_2O_3 and medium Mn steel wasstudied.The results show that Nb and Ce markedly decrease the wetting angleand make wetting happen.The mechanism of Nb to wettability is that the ele-ment is adsorbed on the interface.So the interface is a kind of mechanical orwettable combination.The mechanism of Ce to wettability is that the Ce canreact with Al_2O_3 at the interface.The CeAlO_3 is formed as a reactant.So theinterface is a reactionary type one.The interface strength can be markedly inc-reased by appropriate interface reaction.

本文探讨了 Nb、Ce 对 Al_2O_3-中 Mn 钢界面润湿、界面反应和结构以及对界面结合强度的影响.试验表明:加入 Nb,Ce 可以使润湿角显著下降,由不润湿转化为润湿.Nb 改善润湿性的机制是界面吸附,而不产生界面反应,界面仍属于机械或润湿结合类型;Ce 改善润湿性的机制是界面反应,其反应产物主要是CeAlO_3,属反应型界面,适当的界面反应可以使界面结合强度显著提高.

The contact angles of molten Al and several Al alloys on polycrystal-line α-Alumina were measured by sessile drop method in vacuum. The effects of temperature and currently used alloying elements such as Mg, Cu, Si and Fe on the wcttability of Alumina/Al system were investigated. The wetting phenomena and interfacial reactions were observed and analyzed with metallographic microscope, microprobe X-ray diffraction, atom absorption spectroscopy qualitative analysis, etc.

通过座滴法(Sessile drop method)测定了真空条件下几种铝合金与α氧化铝多晶的润湿角,研究了温度和Mg,Cu等合金元素对α氧化铝-铝润湿性的影响,并通过金相观察、电子探针能谱分析、X射线衍射测试,原子吸收光谱定量分析等手段,探讨了润湿机理和实验过程中出现的一些现象。

 
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