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材料导报  2024, Vol. 38 Issue (20): 23080149-6    https://doi.org/10.11896/cldb.23080149
  金属与金属基复合材料 |
7075 Al/10%SiC复合泡沫材料的制备和摩擦磨损行为研究
陈若瑜, 张秋哲, 赵峰, 宋滨娜*
苏州大学沙钢钢铁学院,江苏 苏州 215131
Fabrication, Friction and Wear Behavior of 7075 Al/10%SiC Composite Foam
CHEN Ruoyu, ZHANG Qiuzhe, ZHAO Feng, SONG Binna*
School of Iron and Steel, Soochow University, Suzhou 215131, Jiangsu, China
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摘要 采用放电等离子烧结溶解法,添加10%(如无特别说明,均为体积分数)SiC和40%NaCl的造孔剂制备7075 Al/SiC复合泡沫材料,并对其球磨时间、烧结性能和摩擦磨损性能进行系统研究。结果表明:球磨时间为2 h、烧结温度为550 ℃、保温时间为10 min时可以制备出平均孔径约250 μm、SiC分布均匀的7075 Al/SiC复合泡沫材料。添加10%SiC后,显微硬度提高到132HV0.2。通过球-盘摩擦系统发现,7075 Al/SiC复合泡沫材料摩擦系数为0.31~0.34;与GCr15球对磨后,7075 Al/10%SiC复合泡沫材料的比磨损率为3.373×10-4 mm3/(N·m),7075 Al泡沫材料的比磨损率为0.993 4×10-3 mm3/(N·m);与Al2O3球对磨后,7075 Al/10%SiC复合泡沫材料的比磨损率为3.986×10-4 mm3/(N·m),7075 Al泡沫材料的比磨损率为2.12×10-3 mm3/(N·m),SiC的添加显著提高了材料的耐磨性,其磨损机制主要是黏着磨损和磨粒磨损。
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陈若瑜
张秋哲
赵峰
宋滨娜
关键词:  7075 Al  碳化硅  放电等离子烧结-溶解法  干摩擦磨损    
Abstract: 7075 Al/SiC composites foam was manufactured by spark plasma sintering (SPS)-dissolution method with SiC volume fractions of 10vol% and NaCl volume fraction of 40%. The ball milling time, sintering property, pore structure, and tribological properties were systematically studied. The results show that 7075 Al/SiC composites foam with the average pore size 250 μm and uniform distribution of SiC can be obtained under 10 min sintering at 550 ℃ and 2 hours of ball milling. The form’s microhardness, with 10vol% SiC, increases to 132HV0.2. The friction coefficient of 7075 Al/SiC composites foam is 0.31—0.34 by Pin-on-Disk test. After wearing against GCr15 ball, the specific wear rate of the 7075 Al/10vol% SiC composite foam is 3.373×10-4 mm3/(N·m), while the specific wear rate of the 7075 Al foam is 0.993 4×10-3 mm3/(N·m). After wearing against Al2O3 ball, the specific wear rate of the 7075 Al/10vol% SiC composite foam is 3.986×10-4 mm3/(N·m), whereas the specific wear rate of the 7075 Al foam is 2.12×10-3 mm3/(N·m). The addition of SiC particles significantly improves the wear resistance, with the wear mechanisms mainly attributed to adhesive wear and abrasive wear.
Key words:  7075 Al    silicon carbide    spark plasma sintering-dissolution method    dry friction and wear
出版日期:  2024-10-25      发布日期:  2024-11-05
ZTFLH:  TF821  
基金资助: 国家自然科学基金(52074186);耐热铝合金复合材料研究(H230089)
通讯作者:  * 宋滨娜,苏州大学沙钢钢铁学院副教授、硕士研究生导师。2012年东北大学有色金属冶金专业博士毕业,毕业后到苏州大学工作至今。目前主要从事3D打印、粉末冶金和多孔金属方面的研究。发表论文30余篇,包括Additive Manufacturing、Journal of Alloys and Compounds、Powder Metallurgy and Metal Ceramics等期刊,授权专利6项。songbinna@suda.edu.cn   
作者简介:  陈若瑜,2021年6月于山东理工大学大学获得工学学士学位。现为苏州大学沙钢钢铁学院硕士研究生,在宋滨娜副教授的指导下进行研究。目前主要研究领域为多孔金属材料。
引用本文:    
陈若瑜, 张秋哲, 赵峰, 宋滨娜. 7075 Al/10%SiC复合泡沫材料的制备和摩擦磨损行为研究[J]. 材料导报, 2024, 38(20): 23080149-6.
CHEN Ruoyu, ZHANG Qiuzhe, ZHAO Feng, SONG Binna. Fabrication, Friction and Wear Behavior of 7075 Al/10%SiC Composite Foam. Materials Reports, 2024, 38(20): 23080149-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.23080149  或          http://www.mater-rep.com/CN/Y2024/V38/I20/23080149
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