镀镍BN纳米线对Ti(C,N)基金属陶瓷结构与性能的影响  

Effect of Ni-BN Nanowires Additions on the Microstructure and Mechanical Properties of Ti(C,N)-based Cermets

作　　者：陈利 彭锦霆 易继勇 周彦君 CHEN Li;PENG Jinting;YI Jiyong;ZHOU Yanjun(College of Physics and Electromechanical Engineering,Jishou University,Jishou,Hunan 416000,China)

机构地区：[1]吉首大学物理与机电工程学院,湖南吉首416000

出　　处：《信息记录材料》2025年第2期1-5,共5页Information Recording Materials

基　　金：湖南省自然科学基金项目(2024JJ7411);湖南省大学生创新创业项目(S202210531041)。

摘　　要：针对氮化硼(BN)纳米线与Ti(C,N)金属陶瓷界面润湿性差,结合强度不足等问题,本文提出了采用镀镍BN纳米线掺杂Ti(C,N)基金属陶瓷的方法。采用SEM、TEM、硬度、抗弯强度等手段研究了镀镍BN纳米线对金属陶瓷组织结构与力学性能的影响。结果表明:采用化学镀镍工艺获得的非晶镍Ni层与BN纳米线表面结合良好。镀镍BN纳米线掺杂能细化硬质相晶粒,提高金属陶瓷致密度。金属陶瓷的硬度与抗弯强度在镀镍BN纳米线含量为0.2 wt%时达到最佳,分别较未添加时提高了20.76%、30.36%。To address the issues of poor interfacial wettability and insufficient bonding strength between boron nitride(BN)nanowires and Ti(C,N)-based cermets,this study proposes a methodology involving the incorporation of nickel-coated BN nanowires into Ti(C,N)-based cermets.The effects of nickel-coated BN nanowires on the microstructure and mechanical properties of cermets were systematically investigated through scanning electron microscopy(SEM),transmission electron microscopy(TEM),hardness measurements,and flexural strength testing.The results demonstrate that the amorphous nickel(Ni)layer deposited via electroless nickel plating exhibits excellent interfacial adhesion with BN nanowires.The incorporation of nickel-coated BN nanowires effectively refined the hard phase grains and enhanced the densification of cermets.Optimal mechanical performance was achieved at 0.2 wt%nickel-coated BN nanowire content,with the hardness and flexural strength showing significant improvements of 20.76%and 30.36%,respectively,compared to the undoped baseline material.

关 键 词：TI(C N)基金属陶瓷 镀镍BN纳米线 组织结构 力学性能 

分 类 号：TG148[一般工业技术—材料科学与工程]