Molten Salt Synthesis of Magnesium Aluminate (MgAl2O4) Spinel on Ti3AlC2 Substrate |
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| Authors: | Jie Zhang Danhua Li Yanchun Zhou |
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| Affiliation: | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A MgAl2O4 (MA) spinel layer was synthesized on Ti3AlC2 substrate through the molten salt synthesis (MSS) method. The Ti3AlC2 substrate was immersed in MgCl2·6H2O powders and treated at 800°, 850°, and 900°C for 4 h in air. A continuous and 10-μm-thick MgAl2O4 layer was obtained at 900°C, by which the surface hardness of Ti3AlC2 can be effectively improved. The combined scanning electron microscopy observations and crystal morphology simulation further revealed that the as-formed MgAl2O4 presents tetragonal bipyramids morphology with (400)-orientation. |
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