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   开气孔率 的翻译结果: 查询用时:0.527秒
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开气孔率
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  open porosity
     The density and open porosity of the prepared C/SiC-(W-C) composite were 3.4g/cm~3 and 11%,respectively.
     C/SiC-(W-C)复合材料的密度为3.4g/cm3,开气孔率为11%。
短句来源
     The density and open porosity of the C/SiC-W composite are 4.1g/cm~3 and 12%,respectively.
     制得C/S iC-W复合材料的密度为4.1g/cm3,开气孔率为12%。
短句来源
     The density of the C f/Al 2O 3 composite as-received is 1.94g/cm3,the open porosity is 22%,the room temperature flexural strength is 121MPa and the fracture strain is 3%?
     实验制备的 Cf/ A复合材料密度为 1.94g/ cm3,开气孔率为 2 2 % ,室温抗弯强度为 12 1MPa,断裂应变达到 3%。
短句来源
     The results show that the composites is extraordinarily dense, with density 2.31g/cm3, open porosity 1.39 % .
     材料的致密度很高,密度为2.31g/cm~3,开气孔率为1.39%。
短句来源
     The results are as follows:(1) C/SiC braking materials with low porosity are manufactured. open porosity is between 3.4% —4.8%, and bulk density is between 1.82—2.26 g/cm3.(2) Two kinds of drawbacks of C/SiC braking material are studied.
     (1) 制备了高致密度的C/SiC摩阻材料,其中开气孔率为3.4%—4.8%,体积密度为1.82—2.26g/cm~3。
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  “开气孔率”译为未确定词的双语例句
     The results s how that it is a kind of dense material with a porosity of 3.1 to 4.4% and the thermal diffusivity is 0.089cm2/s.
     结果表明材料致密度高 ,开气孔率为 3.14 .4 % ,热扩散率为 0 .0 89cm2 /s。
短句来源
     The phenolic resin mainly decomposed from 400℃ to 700℃,and the decomposition rate was 4 times that of other temperature ranges.
     结果表明,酚醛树脂主要在400~700℃大量分解,其分解速率约为其余温度范围的4倍,该温度范围失重率增加了14%、开气孔率增加了18%。
短句来源
     The porosity of porous Ti increased with increasing content of starch soluble, and maximum load stress of porous Ti reduced with the increasing porosity accompany with the rise of maximum extension.
     总孔隙率及开气孔率均随可溶性淀粉含量的增加而增加。 孔隙率越大,试样实际受力面积减小,单位面积上能承受的载荷比致密材料的小,因而样品的强度越低,最大屈服应力值越小,最大压缩量越大。
短句来源
     After ten cycles, the specimen was polished to remove the alumina matrix on the surface of the specimen, which generate "bottle effect" and prevent aluminium nitrate saturation sol from entering into the specimen.
     结果表明 ,硝酸铝饱和溶液浸渗纤维预制体并热解后试样的增重率和开气孔率呈类似抛物线曲线 ;
短句来源
     C/SiC composite was manufactured by RMI and the porosity,the rmal diffusivity and friction property of the material were tested.
     本文采用反应熔体浸渗法制备C/SiC复合材料 ,进行显微结构和X射线衍射分析 ,测试试样的开气孔率、热扩散率及摩擦性能。
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  相似匹配句对
     porosity,46.4% ;
     孔率46.4%;
短句来源
     The Qi(vital energy)
    
短句来源
     the products' porosity and rejecbrate is distinctly reduced.
     制品孔率和废品率明显下降。
短句来源
     Investigation of Gas-Liquid Two-phase Flow Behaviour on Sieve Tray by Metallic Micro Electrode Probe
     筛板上液两相流操作状态的划分及其有效孔率的测定
短句来源
     The density and open porosity of the prepared C/SiC-(W-C) composite were 3.4g/cm~3 and 11%,respectively.
     C/SiC-(W-C)复合材料的密度为3.4g/cm3,孔率为11%。
短句来源
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  open porosity
Total open porosity and the most probable pore radius are determined by mercury porosity technique.
      
Ceramic materials with an open porosity of 37-42% are prepared.
      
After long-term irradiation, the elevated oxygen content in the metal and the formation of relatively bulky beryllium oxide film is due to the development of open porosity.
      
The effect of the respective pore characteristics, such as the volume fraction of open porosity and pore size distribution, on the microstructure of HAP/nylon hybrid composites is discussed.
      
Open porosity increased water uptake significantly only when no starch was added to the medium.
      
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D C fiber preform reinforced alumina mullite composite was manufactured. The materials was produced by precursor infiltration and pyrolysis and subsequently strengthened by silica sol infiltration route after coating the fiber preform with a 0.2μm thick carbon layer by chemical vapor infiltration. The composite was manufactured by infiltrating the preform with aluminium nitrate saturation sol, drying in an autoclave and subsequently heat treating at 950℃ and pyrolysis of the aluminium nitrate. After ten cycles,...

D C fiber preform reinforced alumina mullite composite was manufactured. The materials was produced by precursor infiltration and pyrolysis and subsequently strengthened by silica sol infiltration route after coating the fiber preform with a 0.2μm thick carbon layer by chemical vapor infiltration. The composite was manufactured by infiltrating the preform with aluminium nitrate saturation sol, drying in an autoclave and subsequently heat treating at 950℃ and pyrolysis of the aluminium nitrate. After ten cycles, the specimen was polished to remove the alumina matrix on the surface of the specimen, which generate "bottle effect" and prevent aluminium nitrate saturation sol from entering into the specimen. After another four cycles like above, the specimen was heated to 1150℃ and 1300℃ in Ar to transfer the amorphous alumina to γ Al 2O 3 and α Al 2O 3. The pore size and distribution in the specimens heat treated in different temperature was determined. The specimen, which was heat treated at 1150℃, was dipped in silica sol in vacuum condition, then drying in 100℃. Then the specimen containing silica was heated to 1400℃ for 2h in Ar to impel the reaction between γ Al 2O 3 and silica to create mullite. The stick like mullite was observed which make for the strength of the composite. At the same time, the micro cracks were observed on the unpolished cross section matrix of composite, which was defected around the C fiber and doesn't damage the C fiber. It indicated the C interface was a weak interphase between the C fiber and alumina matrix. The three point flexural strength and the strain of the as fabricated composite were 180MPa and 2.2%.ndpreventaluminiumn

通过氧化铝先驱体溶液循环浸渍热解结合硅溶胶浸渗强化的方法制备了三维C纤维预制体增韧的氧化铝结合莫来石陶瓷基复合材料 ,研究了氧化铝浸渗工艺对试样增重率、气孔率以及热处理温度对试样内气孔尺寸和分布的影响 ,分析了复合材料物相、微结构以及复合材料的力学性能。结果表明 ,硝酸铝饱和溶液浸渗纤维预制体并热解后试样的增重率和开气孔率呈类似抛物线曲线 ;由于硝酸铝分解生成氧化铝的煅烧温度不同 ,氧化铝晶态及物理特性不同 ,试样内气孔尺寸和分布差别较大 ;选择经过 115 0℃预处理的试样进行硅溶胶浸渗 ,然后 14 0 0℃处理 2h ,氧化硅与氧化铝完全反应生成莫来石 ,获得了较为致密的复合材料 ,室温三点弯曲强度和断裂应变分别为 180MPa和 2 .2 %。

C-fiber reinforced Al 2O 3 composite was prepared. The preform was impregnated with aluminium nitrate saturation sol at 50℃ for 2h under vacuum. The impregnated preform was dried at low temperature and then heated at 300~1000℃ for 2h to pyrolyze aluminium nitrate to Al 2O 3. After ten circles, the specimen was calcined at 1300℃ for 2h to transfer the Al 2O 3 to corundum structure(α). The density of the C f/Al 2O 3 composite as-received is 1.94g/cm3,the open porosity is 22%,the room temperature flexural...

C-fiber reinforced Al 2O 3 composite was prepared. The preform was impregnated with aluminium nitrate saturation sol at 50℃ for 2h under vacuum. The impregnated preform was dried at low temperature and then heated at 300~1000℃ for 2h to pyrolyze aluminium nitrate to Al 2O 3. After ten circles, the specimen was calcined at 1300℃ for 2h to transfer the Al 2O 3 to corundum structure(α). The density of the C f/Al 2O 3 composite as-received is 1.94g/cm3,the open porosity is 22%,the room temperature flexural strength is 121MPa and the fracture strain is 3%?

通过硝酸铝饱和溶液循环浸渗热解制备了 C纤维编织体增韧多孔氧化铝陶瓷基复合材料 (Cf/ A) ,并对浸渗效果、复合材料的微观结构和力学性能进行了测试分析。结果表明硝酸铝溶液对 C纤维编织体有很好的渗透性 ,单丝纤维和纤维束之间被氧化铝基体均匀填充。实验制备的 Cf/ A复合材料密度为 1.94g/ cm3,开气孔率为 2 2 % ,室温抗弯强度为 12 1MPa,断裂应变达到 3%。

As a new kind of promising advanced friction material,C/SiC composite has many excellent properties such as low density,good abrasive resistance and high working temperature.Due to simple processing technology and low cost,reactive melt infiltration is a good way to make C/SiC composite for friction purpose.C/SiC composite was manufactured by RMI and the porosity,the rmal diffusivity and friction property of the material were tested.The results s how that it is a kind of dense material with a porosity of 3.1...

As a new kind of promising advanced friction material,C/SiC composite has many excellent properties such as low density,good abrasive resistance and high working temperature.Due to simple processing technology and low cost,reactive melt infiltration is a good way to make C/SiC composite for friction purpose.C/SiC composite was manufactured by RMI and the porosity,the rmal diffusivity and friction property of the material were tested.The results s how that it is a kind of dense material with a porosity of 3.1 to 4.4% and the thermal diffusivity is 0.089cm2/s.Some pores and cracks generated in the pr ocess.The friction property was not very stable in the latter several braking ex periments,and some improvement is required in the future.

C/SiC复合材料由于密度小、耐磨性好、耐高温等一系列优异性能 ,极有希望成为新一代的先进摩擦材料。反应熔体浸渗法由于工艺简单、成本低等优点最适合制造摩擦用C/SiC复合材料。本文采用反应熔体浸渗法制备C/SiC复合材料 ,进行显微结构和X射线衍射分析 ,测试试样的开气孔率、热扩散率及摩擦性能。结果表明材料致密度高 ,开气孔率为 3.14 .4 % ,热扩散率为 0 .0 89cm2 /s。RMI工艺过程中有微小孔洞及裂纹产生。摩擦性能在后几次刹车实验时不稳定 ,还有待进一步提高。

 
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