泡沫铝孔壁厚度、孔隙率和平均孔径之间的关系  

Relationship among Pore Wall Thickness,Porosity and Average Pore Size of Aluminum Foam

作　　者：周向阳[1] 覃静[1] 刘希泉[2,3] 李昌林[1] 张太康[1] 宋泓宇[1] 李劼[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]中铝国际工程有限责任公司 [3]贵阳铝镁设计研究院,贵阳550081

出　　处：《材料导报》2010年第4期75-77,共3页Materials Reports

基　　金：米塔尔创新项目(08MX14);湖南省科技计划重点项目(06SK2011)

摘　　要：利用三维建模软件建立了球形泡孔的泡沫铝三维模型,根据几何关系推导和代数函数求解,计算出能直观反映泡沫铝孔隙率、平均孔径和孔壁厚度三者关系的数学表达式:m=(0.95231/η-1)d。取同一泡沫铝试样的多个线切割截面图并将图片二值化处理,分别将二值化后图片读入图像分析软件Image-proplus5.0中测量出截面平均孔壁厚度(mi),取各截面mi的算术平均值作为该试样实际孔壁厚度(m实测);同时用软件统计出截面平均孔径(di)和孔隙率(η),将各截面di的算术平均值(d)和η带入数学关系式得出该泡沫铝试样孔壁厚度的模型计算值(m计算)。经过对比5个试样发现,m计算与m实测之间的误差小于5%,模型的预测值与泡沫铝的实测值基本吻合。Spherical bubble three-dimension model of aluminum foam is built by modeling software, and relationship among pore wall thickness, porosity and average pore size of aluminum foam model is deduced. The relation for spherical model is m = （0. 9523√1/η-1）d o Several wire cutting section diagrams of one certain aluminum foam sam- ple are converted into binary images, and these binary images are read in image-pro plus 5.0 image analysis software to measure the average pore wall thickness of the section （mi）, then the arithmetic mean of mi is seen as the experimental value （me） of the aluminum foam sample. The average pore size （di） and porosity （η） of the section were calculated by the software, and then the arithmetic mean of di （ d ） and η are inducted into = （0. 9523√1/η-1）dto get the model value （mm）. Comparison shows that the error between mt and mm is less than 5%, so the model value is basically in agreement with the experimental value.

关 键 词：泡沫铝 三维模型 孔隙率 孔壁厚度 平均孔径 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TQ424.25[自动化与计算机技术—计算机科学与技术]