高压下SiC增强Al基纳米复合材料

Synthesis of SiCp/Al Nanocomposite under Ultra-High Pressure

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Chengdu 610003, China;
2.
Center for Condensed Matter Physics, Institute of Physics, Academia Sinica, Beijing 100080, China;
3.
State Key Laboratory of RSA, Institute of Metal Research, Academia Sinica, Shenyang 110015, China

摘要: 采用高压技术合成了纳米尺寸SiC颗粒增强Al基复合材料，针对合成中增强相与基体的化学反应行为、增强相与基体界面结合等问题进行了研究。X射线衍射、高分辨率、正电子湮没以及显微硬度结果表明：高压技术在合成SiCp/Al纳米复合材料中，具有抑制界面反应、提高致密度、改善界面结合等优点。
- 纳米复合材料 /
- 高压 /
- SiC /
- Al
Abstract: SiC nanoparticle reinforced Al-matrix composite has been synthesized under the ultra-high pressure. X-ray diffraction (XRD), high resolution electron microscopy (HREM), positron annihilation and Vickers micro-hardness measurements have been used to evaluate the chemical reaction and the bonding behavior between the reinforced phase and the matrix. Results demonstrate that ultra high pressure can effectively depress the boundary reaction, enhance the condensed density and modify the boundary bonding conditions.
- nanocomposite /
- high pressure /
- SiC /
- Al