燕山大学学报2025，Vol.49Issue(3)：265-271,7.DOI:10.3969/j.issn.1007-791X.2025.03.008
(Ti,Mo)Cx材料的制备与表征分析
Preparation and characterization of(Ti,Mo)Cx composites
摘要
Abstract
(Ti,Mo)Cx composites powders with different Mo contents were prepared by mechanical alloying method using Mo and non-stoichiometric ratio TiC0.7 as raw materials.Then the(Ti,Mo)Cx composites sintered body was prepared by sintering the composites powder under high temperature and high pressure at 5.5 GPa and 1 200～1 400℃.The phase composition of the composite powder and the sintered body were detected by X-ray diffractometer,the fracture morphology of the composites was observed by scanning electron microscope and the hardness and fracture toughness of the composites were characterized by Vickers hardness tester.The effects of Mo content,milling time and sintering temperature on the properties of(Ti,Mo)Cx composites were investigated.The results showed that the presence of carbon vacancy can make TiC accommodate more Mo atoms.The(Ti,Mo)Cx composites achieves the highest hardness of 23.7 GPa when the Mo content is 10%,and the maximum toughness is 5.69 MPa·m1/2 when the Mo content is 25%.In addition,the diffusion degree of Mo to TiC0.7 lattice increases with the extension of milling time.It can be seen from the hardness values and fracture toughness values that the temperature has no obvious effect on the composite material at 1 200～1 400℃high temperature and high pressure.关键词
(Ti,Mo)Cx/TiC0.7/Mo/非化学计量比/高温高压烧结Key words
(Ti,Mo)Cx/TiC0.7/Mo/non-stoichiometric ratio/high temperature and high pressure sintering分类
通用工业技术引用本文复制引用
邹芹,任宇,李艳国,任海波,伏梦云..(Ti,Mo)Cx材料的制备与表征分析[J].燕山大学学报,2025,49(3):265-271,7.基金项目
河北省高等学校科学技术研究项目(ZD2021099) （ZD2021099）
河北省高等学校科学研究重点项目(ZD2021099) （ZD2021099）
