气孔率又称孔隙率。物体的多孔性或致密程度的一种量度。以物体中气孔体积占总体积的百分数表示。用于鉴定陶瓷和耐火材料等制品的烧结程度，测定活性炭等多孔物质的吸附能力，以及衡量泡沫材料等的技术性能。气孔率的大小和温度、气压等有关系，温度越高、气压越大，一般气孔率也越大。气孔率是陶瓷材料致密程度的表征。它以单位体积陶瓷材料的气孔体积百分数表示。可分为总气孔率、显气孔率和闭口气孔率。陶瓷的总气孔率如下：硬质瓷2~6.4%，精陶12~30%，细炻器4~8%，彩陶12.5~38%。
n. porosity
misc. gas hole ratio
泡沫浸渍法制备氧化铝多孔陶瓷 关键词氧化铝多孔陶瓷，泡沫浸渍法，聚氨酯泡沫，气孔率 [gap=4535]words porous alumina ceramics，polymeric sponge dipping method，polyurethane foam，porosity
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... 气孔率(Gas Hole Ratio) 耐火度(Refractoriness ) 重烧收缩(Reburnt Shrinking ) ...
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... 抗弯强度Bending strength 气孔率Air hole rate 热膨胀系数Thermal expansion coefficient ...
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总气孔率 total porosity
显气孔率 [陶瓷] apparent porosity ; AP ; Porosity ; Explicit porosity
开口气孔率 [陶瓷] open porosity ; apparent porosity
闭口气孔率 [陶瓷] closed porosity ; closed porosity
轴芯气孔率 axial porosity
真气孔率 true porosity
有效透气孔率 [农] effective air-through-holes rate
陶瓷气孔率 ceramic porosity
闭气孔率 closed porosity
The W-C liquid phase formed at elevated temperature can evidently decrease the open porosity of the composites and improve the densification.
高温下形成的W-C液相能明显降低复相陶瓷的开口气孔率,使烧结体致密化。
参考来源 - RSiCThe needle-punched 3D C/SiC materials fabricated by CVI process is quite loose, with density 1.90g/cm3? open porosity 16.09%.
CVI工艺制备三维针刺C/SiC复合材料致密度比较低,密度为1.90g/cm3,开气孔率为16.09%。
参考来源 - C/SiC复合材料及其构件的制备与力学性能·2,447,543篇论文数据，部分数据来源于NoteExpress
对制品进行抗压强度和气孔率的测试观察。
The compressive strength and porosity of the product are measured.
随着造孔剂含量的增加，预制体气孔率升高。
The porosity of preforms increased with the increase of starch contents.
目的： 研究气孔率对牙用玻璃陶瓷力学性质的影响。
Objective: To investigate the effect of porosity on the mechanical properties of dental glass-ceramic.
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