摘要
以MAX相(Ti_(3)AlC_(2)材料)为前驱体,采用氢氟酸刻蚀工艺制备二维MXene材料Ti_(3)C_(2)T_(x),并将其作为Ag基体的增强相,采用热压烧结工艺制备含有不同质量分数Ti_(3)C_(2)T_(x)的Ag-Ti_(3)C_(2)T_(x)复合材料。在7 kV电压下,对Ag-Ti_(3)C_(2)T_(x)复合材料进行电弧烧蚀测试。综合运用X射线衍射仪(XRD)、扫描电子显微镜(SEM)及三维激光共聚焦扫描显微镜(3D LSCM)等分析检测方法,对烧蚀前后材料表面的物质成分与形貌变化进行表征与分析。结果表明:经HF刻蚀后的Ti3C2Tx呈现多层手风琴状,在Ag-Ti_(3)C_(2)T_(x)复合材料表面均匀分布;随Ti_(3)C_(2)T_(x)质量分数增加,烧蚀后Ag-Ti_(3)C_(2)T_(x)复合材料表面的烧蚀情况变得越来越复杂,Ag-6.7%Ti_(3)C_(2)T_(x)复合材料的烧蚀面积最大,此时抗电弧侵蚀能力较强;经电弧烧蚀后Ag-3.9%Ti_(3)C_(2)T_(x)和Ag-6.7%Ti_(3)C_(2)T_(x)复合材料表面出现不规则的凸起与凹陷结构,在质量分数为3.9%和10.9%的Ag-Ti_(3)C_(2)T_(x)复合材料表面检测到了Ag_(2)O、TiO_(2)和O_(2)F_(2)氧化物。研究成果拓宽了MXene材料的应用范围。
Two-dimensional MXene material Ti_(3)C_(2)T_(x) was prepared by hydrofluoric acid etching process using MAX phase(Ti_(3)AlC_(2) material)as a precursor.Ti_(3)C_(2)T_(x) was used as the reinforcing phase of the Ag matrix.Ag-Ti_(3)C_(2)T_(x) composites containing different mass fractions were prepared by hot-press sintering process.The Ag-Ti_(3)C_(2)T_(x) composites were tested by arc ablation at 7 kV.X-ray diffractometer(XRD),scanning electron microscope(SEM)and three-dimensional laser confocal scanning microscope(3D LSCM)were comprehensively applied.The focus was on the changes in material composition and surface morphology of the material.The results show that the Ti_(3)C_(2)T_(x) after HF etching exhibits a multilayer accordion shape.It was observed that Ti_(3)C_(2)T_(x) was uniformly distributed on the surface of Ag-Ti_(3)C_(2)T_(x) composites.The ablation on the surface of Ag-Ti_(3)C_(2)T_(x) composites after ablation becomes more and more complicated with increasing Ti_(3)C_(2)T_(x) mass fraction.Ag-6.7%Ti_(3)C_(2)T_(x) composites have the largest ablation area.Better resistance to arc erosion at this time.The surface of Ag-3.9%Ti_(3)C_(2)T_(x) and Ag-6.7%Ti_(3)C_(2)T_(x) composites appeared irregular raised and depressed structures after arc ablation.Ag-Ti_(3)C_(2)T_(x) composites with mass fractions of 3.9% and 10.9% and Ag_(2)O,TiO_(2) and O_(2)F_(2) oxides were detected on the surface of the composites.The research results have broadened the range of applications of MXene materials.
作者
张红娣
曾庆瑶
王叶
范思瑶
蔡子俊
周可冉
马贤明
黄晓晨
张晓辉
ZHANG Hongdi;ZENG Qingyao;WANG Ye;FAN Siyao;CAI Zijun;ZHOU Keran;MA Xianming;HUANG Xiaochen;ZHANG Xiaohui(School of Materials and Chemical Engineering,Bengbu College,Bengbu 233030,China;Engineering and Technology Research Centre for New Silicon Based Materials,Bengbu 233030,China;Anhui Xinrui Advanced Materials Co.,Ltd.,Bengbu 233030,China)
出处
《电工材料》
2025年第5期20-28,共9页
Electrical Engineering Materials
基金
安徽省优秀青年教师培育项目(YQYB2023054)
安徽省自然科学基金面上项目(2208085ME104)
校级科学研究项目(2024YYX29QD)。
