建筑材料中表面形态分析检测方案(扫描电镜)

WWw.coxem.com15 Overview SEM may be used to characterize the size， morphology and chemistry of paint， soil， and any other particlesassociated with construction materials. Domestic Filters for WaterPurifier Water purifier filters are made by mixing ion exchange resinwith activated carbons. They can filter biological impurities(bacteria， viruses， microscopic parasites)， dissolved organiccompounds (PCBs， synthetic detergents)， heavy metal salts，(lead， mercury)， dissolved gases (radon)， and suspendedsolid particles (asbestos fibers). SEM micrographs ofmicrostructures such as pore cavities can be analyzed to sortout defective filters. Like the image on the right， filters withdefective structures may prevent water flow. Filter Low voltage imaging is important in investigating surfaces ofnanomaterials. This is because lowering the voltage leads togreater surface sensitivity and less charging effect. To see thesurface information of the filter， it is better to observe imagesat low voltage. Below are SEM micrographs of a filter observedat 1kV. Otherlmages Cocopeat (x500)Paint (x10，000) Stone (x500) D-15050k680-1 Sand (x5，000) Glass (x5，000) MxNa Wood (x500) SEM may be used to characterize the size, morphology and chemistry of paint, soil, and any other particles associated with construction materials.