摘要
过渡金属碳化物具有高硬度、高熔点、高电导率、耐腐蚀等优异的综合性能,在航空航天、切削加工等极端环境领域具有广阔的应用前景。由于过渡金属碳化物具有强共价键和低扩散系数,其烧结制备所需的温度极高,制备高致密度且性能优异的块体陶瓷具有挑战性。高温高压烧结方法具有可有效降低烧结温度、缩短烧结时间、抑制晶粒生长、提高致密化程度并保持物相纯净等优点。本文从高温高压合成角度,综述了数种典型过渡金属碳化物(ⅣB~ⅥB族)的制备、力学性能、微观机制的研究进展,总结并展望了过渡金属碳化物陶瓷的应用前景和未来发展方向。
Transition metal carbides(TMCs)exhibit exceptional properties,including high hardness,high melting point,excellent electrical conductivity,and corrosion resistance,making them promising candidates for extreme environments such as aerospace and cutting tools.However,the strong covalent bonding and low diffusion coefficients inherent to TMCs necessitate extremely high sintering temperatures,posing significant challenges for fabricating dense bulk ceramics with superior properties.The high pressure and high temperature(HPHT)sintering technique offers distinct advantages,effectively lowering sintering temperatures,reducing processing times,suppressing grain growth,enhancing densification,and preserving phase purity.This review summarizes recent advances in the HPHT synthesis,mechanical properties,and underlying mechanisms of several typical TMCs(Groups ⅣB to ⅥB).The application prospects and future research directions for TMC ceramics are also discussed and outlined.
作者
何瑞琦
曾莹莹
冷浩杰
王润基
彭放
梁浩
房雷鸣
HE Ruiqi;ZENG Yingying;LENG Haojie;WANG Runji;PENG Fang;LIANG Hao;FANG Leiming(School of Mathematics and Physics,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;Institute of Nuclear Physics and Chemistry,Chinese Academy of Engineering Physics,Mianyang 621999,Sichuan,China;Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,Sichuan,China)
出处
《高压物理学报》
北大核心
2025年第9期33-50,共18页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(12075215)
国家重点研发计划(2016YFA0401503)
科学挑战计划(TZ2016001)。
关键词
过渡金属碳化物
高温高压烧结
维氏硬度
弹性性质
transition metal carbides
high pressure and high temperature sintering
Vickers hardness
elastic properties
