Preparation of Ti3AlC2 by mechanically activated sintering of 3Ti/Al/2C/0.2Sn

Bulletin of materials science

Xin Li¹  Baoyan Liang²  Xin Han²  Mingzhi Wang²  Qin Zhou² 

[1] Electronic and Information Engineering College, Liaoning Technical University, Fuxin 125105, China$$Electronic and Information Engineering College, Liaoning Technical University, Fuxin 125105, ChinaElectronic and Information Engineering College, Liaoning Technical University, Fuxin 125105, China$$;Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, China$$Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, ChinaKey Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, China$$

关键词: Ti3AlC2;    mechanically activated sintering;    Sn.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The mechanically activated sintering process was adapted to synthesize titanium aluminum carbide (Ti₃AlC₂) at low temperature. A mechanically induced self-propagation reaction occurred by mechanical alloying of 3Ti/Al/2C powder mixtures. In addition to powder products, a large amount of rigor granules with a size of 0.5 ∼ 10 mm were produced. Fine powders containing Ti₃AlC₂, Ti₂AlC and TiC were obtained. The granules composed of Ti₃AlC₂, Ti₂AlC and TiC. Adding Sn may remove Ti₂AlC and enhance the synthesis of Ti₃AlC₂. After Sn was added, the products only contained Ti₃AlC₂ and TiC. The Ti₃AlC₂ content of the powders and granules were 75 wt% and 88 wt%, respectively. The mechanically alloyed products were pressureless sintered at 900â€�??1300°C for 2 h. Sintering of these products at 900 ∼ 1200°C yields samples containing over 95 wt% Ti₃AlC₂. The sintered powder compacts with high purity Ti₃AlC₂ had a fine organization. The lath Ti₃AlC₂ of the granules had a length of 10â€�??20 𝜇m.

【 授权许可】

Unknown