DS/ENV 1389:1994
高级工业陶瓷．陶瓷复合材料．物理特性．测定密度与表观气孔

Advanced technical ceramics. Ceramic composites. Physical properties. Determination of density and apparent porosity

作废

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标准号

DS/ENV 1389:1994

发布

1994年

发布单位

丹麦标准化协会

当前最新

DS/ENV 1389:1994

 

 

代替标准

DS/EN 1389-2004

适用范围

This European prestandard describes two methods for determination of the bulk density and apparent porosity of ceramic matrix composites with fibrous continuous reinforcement (ID. 2D. 3D). Two methods are described and are designated as Methods A and B. as follows: - Method A: Determination of bulk density only, by measurement of dimensions and mass - Method B: Determination of bulk density and apparent porosity by liquid displacement Method B is suitable for the determination of the apparent or open porosity of material. but is not suitable for materials which are known to have an average pore size of greater than 200 um. The two methods do not measure the same propertjes and do not give equivalent test results. Corresponding methods for monolithic ceramics are given in EN 623-2.

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