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摘要: 研究了在高压条件下Ti2AlN-Al的热稳定性。X射线衍射(XRD)和扫描电镜(SEM)的实验结果表明,Ti2AlN-Al的稳定性与压力的关系较小。在不同压力(3、4和5 GPa)下,Ti2AlN-Al反应的最低温度在500~600 ℃之间,反应产物主要依赖于温度。900 ℃保温、保压20 min,Ti2AlN-Al基本反应完全,反应的最终产物主要为Al3Ti和TiN。Abstract: Thermal stability of Ti2AlN-Al at high pressure is studied. Based on X-ray diffraction (XRD) and scanning electron microscopy (SEM), it was found that the thermal stability was mainly dependent on the temperature, but less on the pressure. When the pressure is 3, 4 and 5 GPa, the lowest reaction temperature of Ti2AlN-Al was between 500 and 600 ℃, and the decomposition products depended on temperature. When the temperature was up to 900 ℃, Ti2AlN-Al had completely decomposed and most of the final products were Al3Ti and TiN.
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Key words:
- Ti2AlN-Al /
- thermal stability /
- high pressure /
- temperature /
- decomposed product
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