Al2O3添加量对Li2ZnTi3O8陶瓷微波介电性能的影响

doi:10.19976/j.cnki.43-1448/TF.2022072

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Abstract Li₂ZnTi₃O₈ was synthesized by solid-state reaction. The microwave dielectric ceramics composed of Li₂ZnTi₃O₈ and Al₂O₃ were prepared (The Al₂O₃ mass is 0-7% of Li₂ZnTi₃O₈ mass). The effects of Al₂O₃ addition amount on the microstructures and dielectric properties of the samples were investigated. The results show that the primary phase of the composite ceramics is cubic structure Li₂ZnTi₃O₈. ZnAl₂O₄ and TiO₂ phases are observed with the increase of Al₂O₃ addition amount, which have a great influence on the microwave dielectric properties of the ceramic samples. The addition of Al₂O₃ can inhibit the growth of Li₂ZnTi₃O₈ grains. When the sintering temperature is 1 100 ℃ and the Al₂O₃ addition is 1%, the microwave dielectric ceramics composed of Li₂ZnTi₃O₈ and Al₂O₃ obtain the best dielectric properties: ε_r≈ 26.1, Q×f ≈ 87 900 GHz, τ_f≈13.3×10^-6℃^-1.

Key words： microwave dielectric ceramics Li₂ZnTi₃O₈ Al₂O additive amount dielectric property

Received: 25 August 2022 Published: 23 March 2023

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	DONG Qingchen
	LIU Kunlei
	YU Shihui
	LIU Xiansheng
	ZHANG Weifeng

Cite this article:

DONG Qingchen,LIU Kunlei,YU Shihui, et al. Effect of Al₂O₃ addition on microwave dielectric properties of Li₂ZnTi₃O₈ ceramics[J]. Materials Science and Engineering of Powder Metallurgy, 2023, 28(1): 28-34.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022072 OR http://pmbjb.csu.edu.cn/EN/Y2023/V28/I1/28

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