Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer
Reliable service of indispensable titanium alloys in aeroengines is limited by the bottleneck problem of titanium fires. In this study, a tri-layer fire retardant coating with a bi-functional ceramic barrier layer is proposed to suppress titanium fire. Results show that the current coating can incre...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
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Elsevier
2023-12-01
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Series: | Corrosion Communications |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2667266923000427 |
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author | Lin Chen Yu Dong Yun-Qi Tong Mei-Jun Liu Guan-Jun Yang |
author_facet | Lin Chen Yu Dong Yun-Qi Tong Mei-Jun Liu Guan-Jun Yang |
author_sort | Lin Chen |
collection | DOAJ |
description | Reliable service of indispensable titanium alloys in aeroengines is limited by the bottleneck problem of titanium fires. In this study, a tri-layer fire retardant coating with a bi-functional ceramic barrier layer is proposed to suppress titanium fire. Results show that the current coating can increase the fire retardant temperature by ≥ 300 K under droplet ignition. Thermal barrier effect of the YSZ refractory ceramic layer significantly reduces Ti alloy temperature, and oxygen barrier effect prevents active Ti from directly contacting oxygen during the entire ablation process. Therefore, the two barrier effects effectively prevent occurrence of titanium fire. In addition, dissolution of the Ni-based abradable seal coating makes burning TC4 molten droplet extinguished in a short time, thus further inhibiting titanium fire ignition. The present study provides an effective method for reliable service and titanium fire-resistant design of titanium alloys. |
first_indexed | 2024-03-08T21:46:44Z |
format | Article |
id | doaj.art-177f4beca68243cab1b8d7e983cde6b9 |
institution | Directory Open Access Journal |
issn | 2667-2669 |
language | English |
last_indexed | 2024-03-08T21:46:44Z |
publishDate | 2023-12-01 |
publisher | Elsevier |
record_format | Article |
series | Corrosion Communications |
spelling | doaj.art-177f4beca68243cab1b8d7e983cde6b92023-12-20T07:39:35ZengElsevierCorrosion Communications2667-26692023-12-01121928Improving fire retardancy of Ti alloys with a refractory ceramic barrier layerLin Chen0Yu Dong1Yun-Qi Tong2Mei-Jun Liu3Guan-Jun Yang4State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, ChinaState Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, ChinaState Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, ChinaState Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, ChinaCorresponding author.; State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, ChinaReliable service of indispensable titanium alloys in aeroengines is limited by the bottleneck problem of titanium fires. In this study, a tri-layer fire retardant coating with a bi-functional ceramic barrier layer is proposed to suppress titanium fire. Results show that the current coating can increase the fire retardant temperature by ≥ 300 K under droplet ignition. Thermal barrier effect of the YSZ refractory ceramic layer significantly reduces Ti alloy temperature, and oxygen barrier effect prevents active Ti from directly contacting oxygen during the entire ablation process. Therefore, the two barrier effects effectively prevent occurrence of titanium fire. In addition, dissolution of the Ni-based abradable seal coating makes burning TC4 molten droplet extinguished in a short time, thus further inhibiting titanium fire ignition. The present study provides an effective method for reliable service and titanium fire-resistant design of titanium alloys.http://www.sciencedirect.com/science/article/pii/S2667266923000427Ceramic barrier coatingAbradable seal coatingFire retardantAblationMelting |
spellingShingle | Lin Chen Yu Dong Yun-Qi Tong Mei-Jun Liu Guan-Jun Yang Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer Corrosion Communications Ceramic barrier coating Abradable seal coating Fire retardant Ablation Melting |
title | Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer |
title_full | Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer |
title_fullStr | Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer |
title_full_unstemmed | Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer |
title_short | Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer |
title_sort | improving fire retardancy of ti alloys with a refractory ceramic barrier layer |
topic | Ceramic barrier coating Abradable seal coating Fire retardant Ablation Melting |
url | http://www.sciencedirect.com/science/article/pii/S2667266923000427 |
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