Friction and wear behavior of bioinspired composites with nacre-like lamellar and brick-and-mortar architectures against human enamel

作     者：Kefeng Gao Jianjun Guan Hui Sun Chengwei Han Guoqi Tan Zengqian Liu Qiang Wang Zhefeng Zhang Kefeng Gao;Jianjun Guan;Hui Sun;Chengwei Han;Guoqi Tan;Zengqian Liu;Qiang Wang;Zhefeng Zhang

作者机构：School of Mechanical EngineeringLiaoning Petrochemical UniversityFushun 113001China Shi-Changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China Liaoning Provincial Key Laboratory of Oral DiseasesSchool and Hospital of StomatologyChina Medical UniversityShenyang 110001China Liaoning Upcera Co.Ltd.Benxi 117004China School of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China 

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

年 卷 期：2022年第128卷第33期

页      面：133-141页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 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：financially supported by the National Key R&D Program of China(No.2020YFA0710404) the National Natural Science Foundation of China(Nos.52173269 and 51871216) the Liaoning Revitalization Talents Program the Youth Innovation Promotion Association CAS。 

主　　题：Bioinspired materials Nacre-like structures Friction Wear mechanisms Orientation 

摘      要：Friction and wear performance is critical for dental materials which are inevitably subject to reciprocating friction against opposing teeth in applications.Here in-vitro friction and wear behavior of bioinspired ceramic-polymer composites,which possess nacre-like lamellar and brick-and-mortar architectures and resemble human teeth in their stiffness and hardness,against human tooth enamel were quantitatively investigated to imitate actual service conditions in line with standardized testing configuration.The composites were revealed to exhibit different wear mechanisms and lead to differing extents of wear to the opposing tooth enamel depending on their specific architectural types and orientations.In particular,the brick-and-mortar architecture displayed much less wear than the lamellar one,without obviously roughening the contact surfaces with enamel owing to its high ceramic content,and as such did not accelerate the wear of enamel as compared to smooth ceramics.Such characteristics,combined with its unique stiffness and hardness matching those of human enamel as well as the good fracture toughness and machinability,endow the composite with a promising potential for dental applications.This work may provide an experimental basis to this end and may also give insights towards designing new bioinspired wear-resistant materials for reducing friction and wear.