Effect of CaTiO3 on sintering properties of Y2O3-based ceramic shell via extrusion-based 3D printing for titanium alloy casting

被引：12
|
作者：
Yang, Li [1 ]
Feng, Qicheng [1 ]
Tang, Shiyan [1 ]
Ling, Qi [1 ]
Liu, Xinwang [1 ]
Fan, Zitian [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2023年 / 49卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Extrusion-based 3D printing; Investment casting; CaTiO3; Titanium alloy; MECHANICAL-PROPERTIES; TURBINE-BLADES; DIRECT INK; MICROSTRUCTURE; FABRICATION; MOLDS; STEREOLITHOGRAPHY; FILLER;
D O I：
10.1016/j.ceramint.2023.03.061
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Yttrium oxide (Y2O3) is widely used in titanium (Ti) alloy casting for its low activity, strength, and heat resis-tance. Wax mold and ceramic coating preparation in traditional investment casting is cumbersome; hence, this work proposes extrusion-based 3D printing of Y2O3-based ceramic shells. This study investigates how trace CaTiO3 affects sintering performance, showing that small amounts can reduce sintering temperature and significantly increase bending strength. Adding 2 mol% CaTiO3 increased the bending strength from 4.3 to 43.1 MPa after sintering at 1500 degrees C, while not wetting with the Ti-6Al-4V titanium alloy. This method offers a promising way to produce high-performance Y2O3-based ceramic shells with lower sintering temperatures.
引用
收藏
页码：19338 / 19345
页数：8
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