硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (1): 256-263.DOI: 10.16552/j.cnki.issn1001-1625.2025.0641
陈友梅1(
), 李镒成1, 何婷1, 刘应寿1, 黎阳1(
), 肖汉宁2, 袁谋云3, 张伟群4
收稿日期:2025-07-02
修订日期:2025-09-02
出版日期:2026-01-20
发布日期:2026-02-10
通信作者:
黎 阳,博士,教授。E-mail:liyang3300@163.com
作者简介:陈友梅(2000—),女,硕士研究生。主要从事氧化铝陶瓷和固废资源化方面的研究。E-mail:2451059014@qq.com
基金资助:
CHEN Youmei1(
), LI Yicheng1, HE Ting1, LIU Yingshou1, LI Yang1(
), XIAO Hanning2, YUAN Mouyun3, ZHANG Weiqun4
Received:2025-07-02
Revised:2025-09-02
Published:2026-01-20
Online:2026-02-10
摘要:
以煅烧α-Al2O3粉体为原料、纳米TiO2为烧结助剂、羧甲基纤维素为成型黏结剂,采用模压成型-常压烧结制备了Al2O3陶瓷,研究了烧结温度及纳米TiO2添加量对Al2O3陶瓷微观形貌、线收缩率、物相结构、体积密度、孔隙率、抗折强度和白度的影响,评估了烧结特性。结果表明,添加适量纳米TiO2能够显著提高Al2O3陶瓷的烧结性能,而过量纳米TiO2会造成Al2O3晶粒异常长大,进而导致收缩率和体积密度降低、孔隙率增大。当纳米TiO2添加量为0.7%(质量分数)、烧结温度为1 500 ℃时,Al2O3陶瓷性能较为优异,其抗折强度达到最大值,为(188.89±5.87) MPa,体积密度、孔隙率和白度分别为3.45 g·cm-3、7.78%和76.6。
中图分类号:
陈友梅, 李镒成, 何婷, 刘应寿, 黎阳, 肖汉宁, 袁谋云, 张伟群. 纳米TiO2对Al2O3陶瓷烧结特性的影响[J]. 硅酸盐通报, 2026, 45(1): 256-263.
CHEN Youmei, LI Yicheng, HE Ting, LIU Yingshou, LI Yang, XIAO Hanning, YUAN Mouyun, ZHANG Weiqun. Effect of Nano-TiO2 on Sintering Characteristics of Al2O3 Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(1): 256-263.
图1 烧结温度为1 550 ℃时不同纳米TiO2添加量下Al2O3陶瓷断面的微观形貌
Fig.1 Cross-section microstructure of Al2O3 ceramics with sintering temperature of 1 550 ℃ and different nano-TiO2 addition
图2 纳米TiO2添加量为0.7时不同烧结温度下Al2O3陶瓷断面的微观形貌
Fig.2 Cross-section microstructure of Al2O3 ceramics with different sintering temperatures and 0.7% nano-TiO2 addition
| Additive | Sintering temperature/℃ | Flexural strength/MPa | Bulk density/ (g·cm-3) | Open porosity/% | Whiteness | Reference |
|---|---|---|---|---|---|---|
| Y2O3-TiO2-MnO2-ZnCO3 | 1 550 | 218.50 | 3.68 | 0.48 | — | [ |
| Cr2O3-Y2O3-MgO | 1 530 | — | 3.92 | — | — | [ |
| CaO-MgO-SiO2-TiO2 | 1 500 | 356.44 | 3.72 | — | — | [ |
| Nano-TiO2 | 1 500 | 188.89±5.87 | 3.45 | 7.78 | 76.6 | This work |
表1 不同添加剂及烧结工艺制备的Al2O3陶瓷的抗折强度、体积密度、开口孔隙率及白度
Table 1 Flexural strength, bulk density, open porosity and whiteness of Al2O3 ceramics prepared by different additives and sintering processes
| Additive | Sintering temperature/℃ | Flexural strength/MPa | Bulk density/ (g·cm-3) | Open porosity/% | Whiteness | Reference |
|---|---|---|---|---|---|---|
| Y2O3-TiO2-MnO2-ZnCO3 | 1 550 | 218.50 | 3.68 | 0.48 | — | [ |
| Cr2O3-Y2O3-MgO | 1 530 | — | 3.92 | — | — | [ |
| CaO-MgO-SiO2-TiO2 | 1 500 | 356.44 | 3.72 | — | — | [ |
| Nano-TiO2 | 1 500 | 188.89±5.87 | 3.45 | 7.78 | 76.6 | This work |
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