SHS Produced TiB2-Si Powders for Selective Laser Melting of Ceramic-Based Composite

Applied Sciences

Sofiya Aydinyan¹  Irina Hussainova¹  Tatevik Minasyan¹  Le Liu¹ 

[1] Department of Industrial and Mechanical Engineering, Tallinn University of Technology, Ehitajate 5, 19180 Tallinn, Estonia;

关键词: titanium diboride;    ceramic composite;    selective laser melting;    self-propagating high-temperature synthesis;   

DOI  :  10.3390/app10093283

来源: DOAJ

【 摘 要 】

One of the main limitations for widespread additive manufacturing is availability and processability of the precursor materials feedstock. For the first time, this study reports the development of a “pomegranate-like” structured TiB₂-Si ceramic-metalloid powder feedstock suitable for selective laser melting (SLM) of ceramic-based composite. The powder was produced via self-propagating high temperature synthesis (SHS) at a moderate combustion temperature of 1530 °C. The effective activation energy in the Ti-B-Si system for the slow step of the combustion process was estimated as 184 kJ. Conditions of SHS process demonstrated a strong influence on the properties of produced powders and, therefore, on SLM parameters and properties of the printed materials. The powders have demonstrated a high performance for manufacturing bulks of 56 wt%TiB₂–44 wt%Si ceramic-based composite.

【 授权许可】

Unknown