Direct ink writing of ZrB2-SiC chopped fiber ceramic composites

被引：76

作者：

Kemp, James W. ^{[1
]}

Diaz, Abel A. ^{[2
]}

Malek, Elizabeth C. ^{[3
,4
]}

Croom, Brendan P. ^{[3
,5
]}

Apostolov, Zlatomir D. ^{[3
]}

Kalidindi, Surya R. ^{[2
]}

Compton, Brett G. ^{[1
]}

Rueschhoff, Lisa M. ^{[3
]}

机构：

[1] Univ Tennessee, Knoxville, TN USA

[2] Georgia Inst Technol, Atlanta, GA 30332 USA

[3] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA

[4] Southwestern Ohio Council Higher Educ, Dayton, OH USA

[5] Johns Hopkins Univ, Appl Phys Lab, Res & Exploratory Dev Dept, Baltimore, MD 21218 USA

来源：

ADDITIVE MANUFACTURING | 2021年 / 44卷

关键词：

Ultra-high temperature ceramics; Direct ink writing; Preceramic polymer; Zirconium diboride; Silicon carbide; Ceramic matrix composite; DIBORIDE-SILICON-CARBIDE; ZIRCONIUM DIBORIDE; CARBON-FIBER; MATRIX COMPOSITES; OXIDATION; POLYCARBOSILANES; MICROSTRUCTURE; FABRICATION; PYROLYSIS; EVOLUTION;

D O I：

10.1016/j.addma.2021.102049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultra-high temperature ceramics (UHTCs) are of interest for thermally- and/or mechanically- extreme environments because of their high melting temperatures (> 3000 degrees C) and ablation resistance. More widespread use is limited by low fracture toughness and inability to be processed into complex-shaped components. Here, we report the production of fiber-reinforced UHTC matrix composites (UHTCMCs) formed via the additive manufacturing technique of direct ink writing (DIW). Slurry 'inks' were developed containing up to 47.5 vol% of the UHTC zirconium diboride (ZrB2), up to 10 vol% chopped silicon carbide fiber (SiCf), and a silicon carbide (SiC) precursor polymer. Lattice structures and flexural specimens were printed and pyrolyzed to form UHTCMCs with aligned (relative to the print direction) SiCf in the ZrB2-SiC matrix. Flexural strength of fiber-containing parts is presented, and fiber alignment due to deposition is analyzed with X-ray computed tomography. Defects that occurred during the DIW process, and their probable causes and mitigation strategies are also discussed.

引用

页数：9