Ti<sub>3</sub>SiC<sub>2</sub>/Cu复合材料的制备与摩擦磨损性能

刘可心; 王蕾; 杨晨; 金松哲

doi:10.13801/j.cnki.fhclxb.20200723.002

Ti₃SiC₂/Cu复合材料的制备与摩擦磨损性能

doi: 10.13801/j.cnki.fhclxb.20200723.002

刘可心^1,,
王蕾^2,,
杨晨^3,,
金松哲^4, ,

1.
东北电力大学　工程训练教学中心，吉林 132012
2.
长春理工大学　光电信息学院机电工程分院，长春 130012
3.
吉林大学　汽车材料教育部重点实验室，长春 130025
4.
长春工业大学　先进结构材料省部共建教育部重点试验室，长春 130012

基金项目: 吉林省科技发展计划基金(20180201077GX)；吉林省高教学会高教科研课题(JGJX2019C21)

详细信息

通讯作者:
金松哲，博士，教授，硕士生导师，研究方向为金属基复合材料　 E-mail：szjin@126.com

中图分类号: TB331
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出版历程
- 收稿日期: 2020-04-20
- 修回日期: 2020-07-15
- 录用日期: 2020-07-21
- 网络出版日期: 2020-07-23
- 刊出日期: 2020-11-15

Preparation and tribological properties of Ti₃SiC₂/Cu composites

LIU Kexin^1
,,
WANG Lei^2
,,
YANG Chen^3
,,
JIN Songzhe^{4
, ,}

1.
School of Engineering Training Center, Northeast Electric Power University, Jilin 132012, China
2.
College of Optical and Electronical Information, Changchun University of Science and Technology, Changchun 130012, China
3.
Key Laboratory of Automobile Materials of Education, Jilin University, Changchun 130025, China
4.
Advanced Structural Materials of Ministry of Education Key Laboratory, Changchun University of Technology, Changchun 130012, China

摘要

摘要: 以Ti₃SiC₂陶瓷粉和Cu粉作为原料，采用放电等离子烧结(SPS)工艺制备Ti₃SiC₂/Cu块体复合材料，研究不同Ti₃SiC₂添加含量及烧结温度对Ti₃SiC₂/Cu复合材料的组织、致密度和显微硬度的影响，研究SPS后Ti₃SiC₂/Cu复合材料的摩擦磨损性能。研究表明：采用SPS工艺制备的Ti₃SiC₂/Cu复合材料的Ti₃SiC₂在Cu中分布均匀，但随着Ti₃SiC₂含量的增加和烧结温度的升高，组织中出现团聚趋势，部分Ti₃SiC₂与Cu在界面处发生互溶现象，互溶增强了Ti₃SiC₂与基体的结合能力；Ti₃SiC₂含量和烧结温度对Ti₃SiC₂/Cu复合材料的致密度和显微硬度影响较大，当烧结温度为900℃时，Ti₃SiC₂/Cu复合材料的致密度达到99.7%，接近完全致密，Ti₃SiC₂/Cu复合材料的硬度较纯Cu提高了2倍左右；对于不同Ti₃SiC₂含量的Ti₃SiC₂/Cu复合材料的磨损机制也有所差异，当Ti₃SiC₂含量较低时(1vol%~5vol%)，磨损机制为磨粒磨损和黏着磨损；随着Ti₃SiC₂含量的增加(10vol%~15vol%)，Ti₃SiC₂发挥了本身的自润滑性，Ti₃SiC₂/Cu复合材料的摩擦磨损性能有所改善，磨损机制转为犁削磨损和轻微黏着磨损；当Ti₃SiC₂含量增加到20vol%时，Ti₃SiC₂/Cu复合材料的磨损表面变得均匀而平整，表明Ti₃SiC₂/Cu复合材料的耐磨性提高。
- 导电陶瓷 /
- Ti₃SiC₂/Cu /
- 复合材料 /
- 放电等离子烧结(SPS) /
- 摩擦磨损
Abstract: The Ti₃SiC₂/Cu composites were prepared by spark plasma sintering (SPS) process using Ti₃SiC₂ ceramic powder and Cu powder as raw materials. The effect of content of Ti₃SiC₂ and sintering temperature on the microstructure, relative density and hardness of Ti₃SiC₂/Cu composites were investigated, and the friction and wear properties of the Ti₃SiC₂/Cu composites after SPS were also studied. The results show that Ti₃SiC₂ are evenly distributed in Cu matrix for the Ti₃SiC₂/Cu composites prepared by SPS process. But with the increase of Ti₃SiC₂ content and sintering temperature, agglomeration trend appears in the tissue, and some Ti₃SiC₂ and Cu miscibility at the interface enhances the ability to bind to the matrix. The Ti₃SiC₂ content and sintering temperature have a great influence on the density and microhardness of the Ti₃SiC₂/Cu composites. When the sintering temperature is 900℃, the density of the Ti₃SiC₂/Cu composites reaches 99.7%, which is close to complete density. The hardness of the Ti₃SiC₂/Cu composites is about 2 times higher than that of pure Cu. The wear mechanism of Ti₃SiC₂/Cu composites with different Ti₃SiC₂ contents is also different. When the content of Ti₃SiC₂is low (1vol%–5vol%), the wear mechanism is abrasive wear and adhesive wear. With the increase of Ti₃SiC₂ content (10vol%–15vol%), it gives play to its self-lubricity, the friction and wear properties of the Ti₃SiC₂/Cu composites are improved, and the wear mechanism is changed to plough cutting and slight adhesive wear. With the content of Ti₃SiC₂ further increases to 20vol%, the wear surface becomes uniform and flat, indicating that the wear resistance of the Ti₃SiC₂/Cu composites is enhanced.
- conductive ceramics /
- Ti₃SiC₂/Cu /
- composites /
- spark plasma sintering (SPS) /
- frictional wear

HTML全文

图 1 不同Ti₃SiC₂含量的Ti₃SiC₂/Cu复合材料在烧结温度为900℃时的金相照片

Figure 1. Optical micrographs of Ti₃SiC₂/Cu composites with different contents of Ti₃SiC₂ at sintering temperature of 900℃ ((a) 0vol%; (b) 1vol%; (c) 5vol%; (d) 10vol%; (e) 15vol%; (f) 20vol%)

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图 2 烧结温度为900℃时Ti₃SiC₂含量为15vol%的Ti₃SiC₂/Cu复合材料及其Ⅰ、Ⅱ区放大的金相照片

Figure 2. Optical micrographs of Ti₃SiC₂/Cu composite with Ti₃SiC₂ concent of 15vol% at sintering temperature of 900℃ and high magnification of Ⅰ and Ⅱ region

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图 3 烧结温度分别为850℃ (a)和900℃ (b)时Ti₃SiC₂含量为15vol%的Ti₃SiC₂/Cu复合材料的TEM图像

Figure 3. TEM images of Ti₃SiC₂/Cu composite with Ti₃SiC₂ concent of 15vol% at sintering temperature of 850℃ (a) and 900℃ (b)

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图 4 Ti₃SiC₂含量和烧结温度对Ti₃SiC₂/Cu复合材料致密度和显微硬度的影响

Figure 4. Effect of Ti₃SiC₂ content and sintering temperature on relative density and Vickers hardness of Ti₃SiC₂/Cu composites

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图 5 Ti₃SiC₂含量对Ti₃SiC₂/Cu复合材料磨损率(a)和摩擦系数(b)影响

Figure 5. Effect of Ti₃SiC₂ content on wear rate (a) and friction coefficient (b) of Ti₃SiC₂/Cu composites

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图 6 烧结温度为850℃时纯Cu磨损表面的SEM图像

Figure 6. SEM images of worn surface of pure Cu at sintering temperature of 850℃

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图 7 烧结温度为850℃时不同Ti₃SiC₂含量的Ti₃SiC₂/Cu复合材料磨损表面的SEM图像及EDX图谱: (a) 1vol%; (b) 5vol%; (c) 10vol%; (d) 15vol%;(e) 20vol%; (f)15vol% Ti₃SiC₂/Cu磨损表面的EDX图谱

Figure 7. SEM images and EDX spectrum of worn surface of Ti₃SiC₂/Cu composites with different contents of Ti₃SiC₂ at sintering temperature of 850℃: (a) 1vol%; (b) 5vol%; (c) 10vol%; (d) 15vol%; (e) 20vol%; (f) EDX spectrum of worn surface of 15vol% Ti₃SiC₂/Cu

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