[1]梁君岳,陈俊熹,杨涛,等.钛铝合金在富氧环境下的高温氧化行为[J].中国材料进展,2026,45(08):713-722.[doi:10.7502/j.issn.1674-3962.202605008]
LIANG Junyue,CHEN Junxi,YANG Tao,et al.Oxidation Behavior of Titanium Aluminum Alloys in Oxygen-Enriched Environment[J].MATERIALS CHINA,2026,45(08):713-722.[doi:10.7502/j.issn.1674-3962.202605008]
点击复制
钛铝合金在富氧环境下的高温氧化行为(
)
中国材料进展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
-
45
- 期数:
-
2026年08
- 页码:
-
713-722
- 栏目:
-
- 出版日期:
-
2026-08-08
文章信息/Info
- Title:
-
Oxidation Behavior of Titanium Aluminum Alloys in Oxygen-Enriched Environment
- 文章编号:
-
1674-3962(2026)08-0713-10
- 作者:
-
梁君岳; 陈俊熹; 杨涛; 黄旭杰; 曹发和; 伍廉奎
-
中山大学材料学院，广东 深圳 518107
- Author(s):
-
LIANG Junyue; CHEN Junxi; YANG Tao; HUANG Xujie; CAO Fahe; WU Liankui
-
School of Materials, Sun Yat-sen University, Shenzhen 518107, China
-
- 关键词:
-
TiAl合金; 富氧服役环境; 溶剂热氟化处理; 磁控溅射镀膜; 预氧化
- Keywords:
-
TiAl alloy; oxygen-enriched service environment; solvothermal fluorination treatment; magnetron sputtering coating; pre-oxidation
- 分类号:
-
TG174.4；TG146.23
- DOI:
-
10.7502/j.issn.1674-3962.202605008
- 文献标志码:
-
A
- 摘要:
-
TiAl合金在航空发动机高温部件中具有重要的应用前景。同时，为提升初期火焰生长速率以及后续燃烧效率，飞行器常采用富氧（O2体积分数大于30%）进气技术。研究表明，富氧环境下发动机燃烧效率将急剧提升，但同时体系稳定程度也将下降，于服役合金而言，可能造成严重内氧化和氧化层剥落等。为此，在前期研究溶剂热氟化处理的基础上，引入磁控溅射镀铝层与预氧化复合改性策略，以期弥补TiAl合金单一氟化的防护不足。系统研究了镀铝和预氧化对TiAl合金在900 ℃下N2-40%O2（体积分数）气氛下氧化行为的影响，采用XRD、SEM/EDS及TEM表征氧化膜物相、形貌与界面结构。结果表明：纯氧预氧化可形成高纯致密Al2O3初始层，有效抑制Ti外扩散；镀铝层作为Al源，在长期氧化中持续供Al，显著延缓基体贫铝层形成与扩展。其中，镀铝+纯氧预氧化试样性能最优，氧化200 h未发生剥落，氧化层Ti含量低于2.4%（原子数分数），且Ti3Al贫铝过渡层最终仅约5 nm厚。该复合改性策略为富氧燃烧工况下TiAl合金的高温结构防护提供了新思路。
- Abstract:
-
TiAl alloys exhibit good potential for application in high-temperature aero-engine components. To enhance initial flame growth rates and subsequent combustion efficiency, oxygen-enriched intake technology is commonly adopted in aircraft. Research indicates that when O2 exceeds 30vol%,combustion efficiency increases dramatically. However, system stability decreases, potentially leading to severe internal oxidation and oxide scale spallation in service alloys. Therefore, building upon previous investigations into solvothermal fluorination, the present study introduces a combined modification strategy that involves magnetron sputtering of an aluminum coating followed by pre-oxidation, aiming to overcome the protection limitations of single fluorination in TiAl alloys. The effects of aluminum coating and pre-oxidation on the oxidation behavior were systematically investigated at 900 ℃ in a N2-40vol%O2 atmosphere. The phase composition, morphology and interfacial structure of the oxide scales were characterized using XRD,SEM/EDS and TEM. The results demonstrate that pure O2 pre-oxidation enables the formation of a highly pure and dense initial Al2O3 layer, effectively suppressing outward diffusion of Ti. The aluminum coating serves as an “Al reservoir”, continuously supplying Al during prolonged oxidation and significantly delaying the initiation and propagation of the Al-depleted layer in the substrate. Among the four conditions, the aluminized sample with pure O2 pre-oxidation exhibits optimal performance: no spallation occurs after 200 h of oxidation, the Ti content in the oxide scale remains below 2.4at%, and the Al-depleted Ti3Al transition layer ultimately reaches a thickness of only approximately 5 nm. This combined modification strategy provides a novel approach for the high-temperature structural protection of TiAl alloys under oxygen-enriched combustion conditions.
备注/Memo
- 备注/Memo:
-
收稿日期：2026-05-10修回日期：2026-06-06基金项目：国家自然科学基金项目（52271084）第一作者：梁君岳，男，2001年生，硕士研究生通讯作者：伍廉奎，男，1986年生，教授，博士生导师，Email: wulk5@mail.sysu.edu.cn
更新日期/Last Update:
2026-06-30