发动机喷嘴表面化学改性抗结焦积碳

李范; 朱岳麟; 黄艳斐; 刘亚杰

doi:10.13700/j.bh.1001-5965.2013.0326

发动机喷嘴表面化学改性抗结焦积碳

doi: 10.13700/j.bh.1001-5965.2013.0326

1. 北京航空航天大学材料科学与工程学院, 北京 100191;
2. 装甲兵工程学院再制造技术国家重点实验室, 北京 100072;
3. 北京航空航天大学材料科学与工程学院, 北京 100191

基金项目:

中国航空工业集团沈阳发动机设计研究院合作资助项目（2011—2013）

详细信息

作者简介:
李范（1988- ），女，山东聊城人，硕士生，lifan10006@126.com.

中图分类号: V252.2
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出版历程
- 收稿日期: 2013-06-06
- 网络出版日期: 2014-04-20

Anti-coking performance of nozzle materials’ surface chemical modification

1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China;
3. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对航空发动机喷嘴产生大量结焦积碳并影响其技术性能和使用寿命的问题，采用化学强氧化-阴极还原法，在航空发动机喷嘴材料表面制备了稳定的富铬氧化层.利用扫描电子显微镜、能谱仪和接触角测量仪对样品表面表征，开展静态结焦质量评定和动态航空发动机台架燃烧实验，探讨化学改性抑制结焦积碳的机制.结果表明，材料表面平整，氧化膜颗粒排列堆积紧密；喷嘴材料的抗结焦性能与其表面成分和界面张力密切相关；静态抑制结焦率最大约12.5%，动态燃烧实验效果更显著.
- 航空发动机 /
- 喷嘴 /
- 结焦积碳 /
- 化学改性 /
- 界面张力
Abstract: Based on the problem of technical performance and service life of the aero-engine with a mass of coking on nozzles, steady rich chromium oxide layer was prepared on the aircraft engine nozzle materials' surface through the chemical oxidation-cathodic reduction method. The sample surface was characterized by scanning electron microscope, energy dispersive spectrometer and contact angle measuring device. Static coking quality determination and dynamic aero-engine bench combustion test was carried out. The anti-coking mechanism of chemical modification was discussed. It is found that the materials' surface is flat, and oxidation film particles closely arrange. Nozzle materials' anti-coking performance is closely related with surface composition and interfacial tension. The highest static anti-coking rate is up to 12.5%. Dynamic combustion experiment has more significant effect.
- aero-engine /
- nozzle /
- coking /
- chemical modification /
- interfacial tension

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参考文献(15)

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