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

页码：19338 / 19345

页数：8

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