Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer

• DOI: 10.1016/j.corcom.2023.02.002
• Publication Date: 2023-11-17T21:28:57Z
• Authors: Lin Chen; Yu Dong; Yun-Qi Tong; Mei-Jun Liu; Guan-Jun Yang
• Keywords: Barrier layer

Reliable service of indispensable titanium alloys in aeroengines is limited by the bottleneck problem fires. In this study, a tri-layer fire retardant coating with bi-functional ceramic barrier layer proposed to suppress fire. Results show that current can increase temperature ≥ 300 K under droplet ignition. Thermal effect YSZ refractory significantly reduces Ti alloy temperature, and oxygen prevents active from directly contacting during entire ablation process. Therefore, two effects effectively prevent occurrence addition, dissolution Ni-based abradable seal makes burning TC4 molten extinguished short time, thus further inhibiting The present study provides an effective method for reliable fire-resistant design alloys.