Additive manufacturing of composite materials and functionally graded structures using selective heat melting technique

作     者：Kalaimani Markandan Ruijing Lim Pawan Kumar Kanaujia Ian Seetoh Muhammad Raziq bin Mohd Rosdi Zhi Huey Tey Jun Seng Goh Yee Cheong Lam Changquan Lai Kalaimani Markandan;Ruijing Lim;Pawan Kumar Kanaujia;Ian Seetoh;Muhammad Raziq bin Mohd Rosdi;Zhi Huey Tey;Jun Seng Goh;Yee Cheong Lam;Changquan Lai

作者机构：Temasek LaboratoriesNanyang Technological University50 Nanyang Drive637553Singapore School of Physical&Mathematical SciencesNanyang Technological University21 Nanyang Link637371Singapore School of Mechanical&Aerospace EngineeringNanyang Technological University50 Nanyang Avenue639798Singapore School of Materials Science&EngineeringNanyang Technological University50 Nanyang Avenue639798Singapore 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第47卷第12期

页      面：243-252页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：funding for this project by the Temasek Research Fellowship(No.9016100729) 

主　　题：Selective heat melting Functionally graded materials Additive manufacturing Multimaterial 

摘      要：The feasibility of using selective heat melting(SHM) to fabricate composite materials and functionally graded structures was *** report,for the first time,the successful 3 D printing of copper(Cu)-polyethylene(PE) composite,iron(Fe)-polyethylene(PE) composite and functionally graded CuO foams using the SHM *** was found that a low feed rate,high airflow rate and high airflow temperature were required for efficient delivery of heat from the emitted hot air to the powder bed,so that the PE binder particles can melt and form dense composites with smooth *** best mechanical properties were exhibited by composites with 80 vol.% PE,as lower PE concentrations led to deficient binding of the metal particles,while higher PE concentrations meant that very few metal particles were available to strengthen the *** strength exhibited by Cu-PE composites was comparable to engineering plastics such as polycarbonate,with the added advantage of being electrically *** average conductivity of the samples,0.152±0.28 S/m,was on par with physically crosslinked graphene *** subjecting a Cu-PE composite,with Cu concentration graded from 10 vol.% to 30 vol.%,to a high temperature debinding and sintering treatment in air,CuO foam with graded porosity can be *** CuO foam was observed to fail in a layer-by-layer manner under mechanical compression,which is a characteristic of functionally graded *** study shows that,compared to existing 3 D printing techniques,SHM can be cheaper,have wider material compatibility,occupy a smaller footprint and potentially induce less residual stresses in the fabricated ***,it could be a valuable complement to current additive manufacturing techniques for fabricating mechanically strong composite materials and functionally graded structures.