八面体模型理论应用:泡沫金属的比表面积  

Application of the Octahedral Model Theory to Evaluating the Specific Surface Area of Porous Metal Foams

作　　者：刘培生[1] 顷淮斌 LIU Peisheng;QING Huaibin(Key Laboratory of Beam Technology of Ministry of Education,Beijing Normal University,Beijing 100875,China;Institute of Materials and Processing,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]北京师范大学射线束技术教育部重点实验室,北京100875 [2]广东省科学院材料与加工研究所,广州510650

出　　处：《真空科学与技术学报》2025年第3期222-228,共7页Chinese Journal of Vacuum Science and Technology

摘　　要：基于作者从自建八面体模型出发提出的多孔材料比表面积计算公式,对系列泡沫金属及相关多孔产品进行对应的实践研究。考察不同材质和不同结构的泡沫金属产品,对该计算公式展开系列的实践应用和验证。考察对象中既有孔隙率超过90%的高孔率产品,也有孔隙率低于45%的较低孔率产品,还有孔隙率介于70%-80%的中间孔率产品;涉及的孔隙尺寸既有毫米级的宏孔产品,也有微米级的微孔产品。结果显示,本多孔材料比表面积表征公式可较好地适应所有这些多孔产品的计算,其平均计算偏差均在3%以内,多为1%左右。这说明本表征关系较好地反映了泡沫金属及相关多孔产品比表面积与孔隙率和孔径两者的关系规律,具有良好的泡沫金属及相关多孔产品比表面积计算实践能力。Based on the equation from the octahedron model to conveniently calculate the specific surface area of porous materials,the practical investigations are correspondingly carried out on a series of metal foam products.This paper investigates more metal foam products with different material species and various structures and develops a series of practical applications and verification of the present calculation formula.Among the investigated objects,there are highly porous products with porosity exceeding 90%,lowly porous products with porosity below 45%,and intermediately porous products with porosity between 70%and 80%.The pore sizes involved include both millimeter and micrometer scales.The research results show that the characterization formula of specific surface area can adapt well to the calculation of all these porous products,with the average calculation deviation within 3%,mostly around 1%.This indicates that this characterization formula well reflects the relationship between the specific surface area and the porosity and pore diameter for metal foams and the relevant porous product,and has a good practical ability to calculate the specific surface area of metal foams and the relevant porous product.

关 键 词：多孔材料 泡沫金属 比表面积 计算公式 八面体模型 

分 类 号：TB383[一般工业技术—材料科学与工程]