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| Effect of Al content on microstructure and properties of B4C-CeB6/Al composites |
| LI Tianyu，DONG Zhongqi，PAN Enbao，WANG Yang，ZHANG Baoyu，SONG Yu |
| （Department of Materials Engineering, Hebei College of Industry and Technology, Shijiazhuang 050000, China） |
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Abstract The B
4C-CeB6/Al composites were prepared by mechanical alloying and cold-pressure microwave sin‐
tering. The microstructure and phase composition of the B4C-CeB6/Al composites were analyzed by using x-ray dif‐
fractometer and scanning electron microscope. The hardness of the materials was measured. The microstructure
evolution law of the B
4C-CeB6/Al composite was studied by the addition amount of Al. The results show that the
B
4C-CeB6/Al composite powders are mechanically alloyed during ball milling, and the powders are columnar. The
phase composition of the B4C-CeB6/Al composites varies with Al addition, and the main phases are B4C, CeB6,
Al
2O3, Al3BC, Al5BO9 and CeBO3. With the increase of Al addition, the content of Al5BO9 and CeBO3 increases.
The CeB
6 and Al3BC phase increase first and then decrease, and the hardness of the material increases first and then
decreases.
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Received: 22 August 2022
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Corresponding Authors:
董中奇（1976—），男，博士，教授，主要研究方向为冶金新材料的应用与开发。
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2023, Vol. 33 
