孔隙率

孔隙率和温度有时也能影响地震波速

Seismic velocity can occasionally be affected by porosity and temperature .

研究了发泡工艺参数对泡沫Al孔隙率的影响。

The effect of foaming process parameters on the porosity of Al foams was investigated .

利用SEM和全自动孔隙率分析仪，对砂浆水化产物的微观结构及其致密度进行分析。

In the experiments , we discussed the hydrate and micro-structure by SEM and porosity analysis .

并在此基础上研究了化学镀Ni－B合金镀层的结合力、孔隙率、耐烧碱腐蚀性及镀层的硬度与热处理温度的关系等特性。

And the properties of the plate such as hardness , corrosion resistance , porosity and adhesion are also investigated .

随着涂层厚度的增加，整个涂层的平均孔隙率变小，使得E随之增大。

It was found that the average porosity of whole coating decreased with the increase of coating thickness , so E increased .

软熔处理会降低镀层的孔隙率，但温度高于200°C，则孔隙率会随着温度的升高而增加。

Melt treatment can reduce the porosity of tin coating , but over ( 200 ° C ,) the porosity will increase with the rising of temperature .

涂层的硬度受到孔隙率和硬质相WC含量的共同影响。

Hardness is influenced by the porosity and the content of WC phase .

孔隙率对Al2O3高孔隙率多孔介质EHC的影响

Effects of Porosity on Effective Heat Conductivity of Highly Porous Media of Al_2O_3

3d龄期时掺粉煤灰的试样混凝土结构比未掺粉煤灰的试样疏松，孔隙率也较大，水化产物相对较少。

The concrete structure with fly ash was loose than the concrete structure without fly ash in the 3d age , it had bigger porosity and smaller hydration products .

选择性激光烧结（SelectiveLaserSintering，SLS）间接法能够制造任意复杂结构金属零件，但存在孔隙率高和强度低的缺陷。

Indirect Selective Laser Sintering ( SLS ) can manufacture any types of parts with complex structure , but with high porosity and low strength .

具有不同孔径尺寸和孔隙率的多孔硅在不同的MEMS中可作为功能结构层和牺牲层。

Porous silicon with different pore sizes and porosities can be used as functional and structural layer and sacrificial layer in different MEMS .

表观孔隙率与宏观孔隙率不一致主要是由于SEM照片没有反映出膨润土的粒内孔隙造成的。

Lloret . The difference between the apparent porosity and macro porosity is mainly caused by the fact that the intraparticle pores are not shown in SEM photos .

建立了分形模型来模拟水泥浆体的空间结构，在此基础上推导出了孔体积分形维数D和孔隙率P、孔径分布的关系式；

A fractal model is established to simulate the spatial structure of concrete slurry , and a formula that describes the relationship among the fractal dimension D , the porosity P and the pore distribution is deduced .

由于白炭黑较高的比表面积及丰富的孔隙率，使得白炭黑复合吸附剂对CO2的吸附效果整体上高于硅胶复合吸附材料。

Because of the high specific surface and porosity , the CO2 absorption capacity of white carbon black complex adsorbents was better than the silica gel ' s.

对不同孔隙率的微孔聚四氟乙烯（PTFE）疏水性平板膜的膜气体吸收过程中液相传质性能进行了实验研究。

The mass transfer performances of CO2 absorbed by water or NaOH aqueous through microporous polytetrafluoroethylene ( PTFE ) flat membrane were studied .

这个反应过程，要求AGM隔板有良好的孔隙结构和高的孔隙率；

AGM separator should have good pore structure , high porosity and enough electrolyte saturation .

最后，结合对流换热分析结论，对考虑对流换热情况下材料λe随流体流速、孔隙率等参数的变化情况进行简要的探讨。

Finally , based on the analysis of convection , a brief discussion is made about how λ e changes with the change of velocity of the fluid and porosity when convection is considered .

丝-粉电弧喷涂Cu-Sn复合涂层孔隙率的研究

Study on the porosity of Cu-Sn composite coating deposited by wire-powder arc spray

采用XRD、四端线直流法、阿基米德法、程序升温还原（TPR）等方法研究了两种钙钛矿阴极材料复合后的相容性、电导率、孔隙率和催化活性。

The compatibility , electrical conductivity , porosity and catalytic properties were investigated by XRD , 4-DC Point , Archimedes method and temperature-programmed reduction ( TPR ) .

SEM分析发现，氧化膜呈网状结构，孔隙率约为10个/μm2，孔径大小为0.15～0.20μm。

SEM test indicated that the microstructure of the film was like a web . The porosity was 10 per μ m 2 , pore size was 0 15 ~ 0.20 μ m.

涂层较致密，孔隙率约为3.33%，低于普通AT13陶瓷涂层。

And its porosity of is 3.33 % which is lower than ceramic coating .

PA的有效折射率可根据Maxwell-Garnett有效介电常数理论由孔隙率算出。

The effective refractive index of the PA film is calculated from porosity given by Maxwell-Garnett effective dieletric constant theory .

PLGA支架有一定力学强度，孔隙率90%左右，孔径180～280μm；

The PLGA scaffold had suitable mechanical strength . It 's pore size was 180 ~ 280 μ m and porosity was about 90 % .

孔隙率高的陶瓷其EHC较大。

Foams having higher porosity showed higher EHC .

通过设置一系列固化压力历程以产生不同水平的孔隙率，采用超声C扫描、显微镜分析和酸解法对孔隙的分布、形状、尺寸和体积含量进行了定性和定量表征。

A set of cure pressures were applied to produce various void contents . Qualitative and quantitative characterization of porosity in terms of void distribution , shape , size and volume fraction was carried out by ultrasonic C-scan , microscopic analysis and acid digestion methods .

结果表明：所得的化学镀NiCuP镀层为非晶态结构；其外观光亮，耐硝酸腐蚀时间大于800s，孔隙率为9级，镀速为8μm/h；

The results show that the electroless Ni-Cu-P deposits have amorphous structure with bright appearance , time of nitric acid corrosion resistance of more than 800 s , 9 grade of porosity , 8 μ m / h of plating speed .

但因PTFE软质粒子的加入，使Ni-P-PTFE复合镀层较Ni-P镀层存在硬度低、孔隙率高、耐蚀性差等缺陷。

But due to the joining of PTFE soft particles , Ni-P-PTFE composite coating Ni-P coating corrosion resistance of low hardness , high porosity , poor flaw .

在熔体发泡过程中，通过严格控制发泡温度、搅拌速度和搅拌时间等工艺参数，制得了孔隙率基本可调，SiC颗粒和孔洞分布均匀的泡沫铝样品。

The result shows that the porosity is partly adjustable , the distribution of SiC particles and cells can be more equable by strictly controlling the process parameters such as foaming temperature , stirring time and speed .

拉伸工艺对膜的结构和性能也有很大的影响，随着拉伸速率和拉伸比率的增加，PE中空纤维膜的透气率和孔隙率均增加。

Stretching process also had great effects on the microporous structure of PE hollow fiber membranes , it was indicated that the N2 permeation and porosity of the membranes both increased with the increases of stretching rate and ratio .

另外，适量添加PEG，提高了膜表面的孔隙率，抑制膜结构中指状孔的形成和发展。

Also , the proper addition of PEG would increase the hole rate in the surface of the membrane and check the formation and development of middle-finger hole in the ( membrane ) structure .