文献类型：期刊文献

英文题名：Evaluation of Treatment Effect and Mechanism Analysis of Ti6AL4V Porous Scaffolds Prepared by Selective Laser Melting with Different Chemical Polishing Processes

作者：Peng, Wen[1,2];Cheng, Cai[1,2];Hu, Jinwang[2,3];Liu, Yami[2];Li, Minmin[2];Song, Changhui[4];Shi, Wenqing[1]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China;[2]Foshan Orthoped Implant Stable Engn Technol Res C, Foshan, Peoples R China;[3]Shantou Univ, Coll Engn, Shantou, Peoples R China;[4]South China Univ Technol, Sch Mech & Automot Engn, Guangzhou, Peoples R China

年份：2023

外文期刊名：3D PRINTING AND ADDITIVE MANUFACTURING

收录：SCI-EXPANDED(收录号：WOS:001157853200001)、、WOS

基金：This work is financially supported by the National Natural Science Foundation of China (No. 62073089); the Special Project for Key Fields of Higher Education in Guangdong Province (No. 2020ZDZX2061); and Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation (''Climbing Program'' Special Funds) (No. pdjh2023a0242). Postgraduate Education Innovation Project of Guangdong Ocean University (No. 202327).

语种：英文

外文关键词：selective laser melting; Ti6Al4V; porous scaffolds; chemical polishing; surface treatment

外文摘要：The large amount of unfused powder that remains on the surface of Ti6AL4V porous scaffolds prepared by selective laser melting technology is a common problem. Therefore, this article investigated the effects of three different chemical polishing processes on the surface state, pore structure, and mechanical properties of small pore size scaffold materials at different polishing times in the field of implantable medical devices. The results show that the overall treatment effect of the simple chemical polishing process is poor, the internal treatment depth of porous support is insufficient and uneven, and the overall mechanical properties of the sample with the same porosity are average. The outer structure during the electrochemical polishing process showed an obvious treatment effect. However, the internal treatment depth and uniformity were significantly lower compared with the simple chemical polishing process, and the overall mechanical properties of the sample with the same porosity were inferior. The overall treatment effect, depth, and uniformity of the inner and outer structure of the sample using a dynamic chemical polishing process were significantly optimized, and the overall mechanical properties of the sample with the same porosity were superior to the other two methods. Furthermore, the main reasons for the nonuniform treatment effect between the inner and outer layers during the chemical polishing of porous scaffolds were observed to be related to the restricted exchange of etchant caused by the complex internal structure of porous scaffolds and the gas generated by the chemical reaction.