摘要
通过直流辅助热压烧结制备了氮化硼(BN)颗粒添加量为0.4%~1.2%(质量分数)的BN/Cu复合材料,采用立式销盘摩擦磨损试验机对其进行耐磨性检测,使用扫描电子显微镜(SEM)表征材料磨损前后的表面形貌,同时分析了BN颗粒添加量对复合材料物理性能和摩擦磨损性能的影响。研究结果表明:直流辅助热压烧结制备的复合材料致密度均可达到96%以上,导电率可达80%IACS以上。添加适量的BN颗粒,可以极大提升复合材料的摩擦磨损性能。当BN颗粒的添加量为0.8%时,由于摩擦过程中有润滑膜产生,复合材料的摩擦系数最为稳定,且摩擦磨损性能较为优异,主要由磨粒磨损和轻微的黏着磨损共同作用。
BN particles were added to BN/Cu composites during direct current assisted hot press sintering process in amounts ranging from 0.4%to 1.2%(mass fraction).The assessment of wear resistance was carried out utilizing a vertical pin-on-disc friction and wear tester,whereas the analysis of surface morphology prior to and following wear was completed employing scanning electron microscopy(SEM).Furthermore,an analysis was conducted to examine the impact of including BN particles on the physical,frictional,and wear parameters of the composites.The results demonstrated that densification of greater than 96%and electrical conductivity of greater than 80%IACS were both possible in composites made by DC-assisted hot press sintering.The addition of an optimal quantity of BN particles could significantly enhance the friction and wear characteristics of the composites.Due to the lubricating layer produced during the friction process,the friction coefficient of the composites was most stable when BN particles were added in an amount of 0.8%.Consequently,the composites exhibited outstanding friction and wear performance,primarily influenced by a combination of abrasive wear and minor adhesive wear.
作者
龙希希
邹军涛
薛航宇
石林
孙利星
王家继
LONG Xixi;ZOU Juntao;XUE Hangyu;SHI Lin;SUN Lixing;WANG Jiaji(School of Materials Science and Engineering,Xi’an University of Technology,Engineering Research Center of Conducting Materials and Composite Technology,Ministry of Education,Shaanxi Key Laboratory of Electrical Mate-rials and Infiltration Technology,Xi’an 710048,China;Xi’an Zhitong Automation Technology Development Company,Xi’an,710048,China)
出处
《铜业工程》
CAS
2024年第1期38-44,共7页
Copper Engineering
基金
国家自然科学基金项目(52071259)
陕西省重点研发计划三项改革项目(2023GXLH-037)
西安市重大科技成果就地转换资助项目(2021SFGX0004)资助。
