无机材料学报 ›› 2022, Vol. 37 ›› Issue (3): 317-324.DOI: 10.15541/jim20210624
所属专题: 增材制造专题(2022); 【虚拟专辑】增材制造及3D打印(2021-2022)
朱俊逸(), 张成, 罗忠强, 曹继伟, 刘志远, 王沛, 刘长勇, 陈张伟(
)
收稿日期:
2021-10-08
修回日期:
2021-10-21
出版日期:
2022-03-20
网络出版日期:
2021-11-01
通讯作者:
陈张伟, 教授. E-mail: chen@szu.edu.cn
作者简介:
朱俊逸(1996-), 男, 硕士研究生. E-mail: 386398374@qq.com
基金资助:
ZHU Junyi(), ZHANG Cheng, LUO Zhongqiang, CAO Jiwei, LIU Zhiyuan, WANG Pei, LIU Changyong, CHEN Zhangwei(
)
Received:
2021-10-08
Revised:
2021-10-21
Published:
2022-03-20
Online:
2021-11-01
Contact:
CHEN Zhangwei, professor. E-mail: chen@szu.edu.cn
About author:
ZHU Junyi (1996-), male, Master candidate. E-mail: 386398374@qq.com
Supported by:
摘要:
光固化3D打印是制造高度复杂结构陶瓷的一种有效方法。打印的样件需要经历脱脂和烧结等热处理才能成为可用的陶瓷件, 脱脂工艺对打印件性能影响巨大。本工作通过研究脱脂工艺对DLP光固化3D打印制备的堇青石陶瓷性能的影响规律, 建立缺陷抑制策略。比较并分析了脱脂气氛和升温速率对陶瓷样件的表面裂纹和元素分布状态的影响, 还对比进一步烧结后样件显微组织、尺寸收缩率、相对密度和弯曲强度等性能。研究发现脱脂气氛对样件各性能影响最大, 使用氩气脱脂可显著降低表面裂纹, 提高相对密度与弯曲强度; 并确定最佳升温速率为1 ℃/min。最终获得表面完整无裂纹且相对密度为(94.6±0.3)%, 弯曲强度为(94.3±3.2) MPa的堇青石陶瓷样件。本研究为光固化3D打印堇青石陶瓷的无缺陷制造与应用提供了科学依据与技术参考。
中图分类号:
朱俊逸, 张成, 罗忠强, 曹继伟, 刘志远, 王沛, 刘长勇, 陈张伟. 脱脂工艺对光固化3D打印堇青石陶瓷性能的影响[J]. 无机材料学报, 2022, 37(3): 317-324.
ZHU Junyi, ZHANG Cheng, LUO Zhongqiang, CAO Jiwei, LIU Zhiyuan, WANG Pei, LIU Changyong, CHEN Zhangwei. Influence of Debinding Process on the Properties of Photopolymerization 3D Printed Cordierite Ceramics[J]. Journal of Inorganic Materials, 2022, 37(3): 317-324.
图2 堇青石陶瓷生坯的热重分析结果与脱脂和烧结曲线
Fig. 2 TG/DSC curves, debinding and sintering curves of printed cordierite green body (a) TG/DSC curves; (b) Debinding curve; (c) Sintering curve
图3 不同升温速率脱脂后的样件表面宏观形貌
Fig. 3 Surface macro-graphs of sample after debinding at different heating rates In air: (a) 0.1 ℃/min; (b) 0.5 ℃/min; (c) 1 ℃/min; (d) 3 ℃/min; (e) 5 ℃/min; In argon: (f) 0.1 ℃/min; (g) 0.5 ℃/min; (h) 1 ℃/min; (i) 3 ℃/min; (j) 5 ℃/min
图4 空气气氛下脱脂后样件的EDS元素分析
Fig. 4 Element analysis of sample after debinding in air (a) SEM image; EDS mappings of (b) Al, (c) Mg, (d) O and (e) Si; (f) EDS spectrum
图5 氩气气氛下脱脂后样件EDS元素分析
Fig. 5 Element analysis after debinding in argon (a) SEM image; EDS mappings of (b) Al, (c) Mg, (d) C and (e) O; (f) Si; (g) EDS spectrum
图6 在氩气气氛下脱脂后的样件表面微观形貌
Fig. 6 Micrographs of sample surfaces after debinding in argon(a) 0.1 ℃/min; (b) 0.5 ℃/min; (c) 1 ℃/min; (d) 3 ℃/min; (e) 5 ℃/min
图7 在不同气氛、不同脱脂升温速率下脱脂并经烧结后样件的性能
Fig. 7 Properties of samples after debinding in different atmospheres followed by sintering (a) Shrinkage rate-debinding in air; (b) Shrinkage rate-debinding in argon; (c) Relative density; (d) Bending strength
图8 优化脱脂策略后烧结的样件
Fig. 8 Final cordierite ceramics prepared with optimized debinding scheme followed by sintering (a, b) Dense rectangular sample; (c) Honeycomb structures with complex inter-crossing channels
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