含氧环境中航空发动机用Ti40阻燃钛合金的摩擦点燃

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Bibliographic Details
Published in中国有色金属学报：英文版 no. 8; pp. 2270 - 2275
Main Author 弭光宝 黄旭 曾京霞 曹春晓 黄秀松
Format Journal Article
LanguageEnglish
Published 2013
Subjects
Ti40阻燃钛合会
抗点燃性能
抗点燃机理
氧化物融合物
钛火
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ISSN1003-6326

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Bibliography:Guang-bao MI, Xu HUANG, Jing-xia CAO, Chun-xiao CAO, Xiu-song HUANG（ 1. Aviation Key Laboratory of Science and Technology on Advanced Titanium Alloys, Beijing Institute of Aeronautical Materials, Beijing 100095, China; 2. National Center of Novel Materials for International Research, Tsinghua University, Beijing 100084, China）
43-1239/TG
Ti40 fireproof titanium alloys; fireproof performance; fused oxides; fireproof mechanism; titanium fire
The effect of friction pressure p and oxygen concentration xo on the fireproof performance of Ti40 titanium alloy was studied by frictional ignition test, the U--Xo relationship quantitatively describing the fireproof performance of Ti40 was established and the fireproof mechanism of Ti40 was analyzed by SEM, XRD and EDS. The results show that the p--xo relationship of Ti40 obeys parabolic rule. The varying range of xo is about 25% while p varies within 0.1-0.25 MPa. When Xo is 〉70%, Ti40 is ignited immediately at room temperature and develops into continual and steady burning, and the duration of burning is more than 10 s. The fireproof performance of Ti40 is better than TC4 while xo of Ti40 is at least 40% higher than TC4. When Xo is low, the fireproof performance of Ti40 is more sensitive to p; when Xo increases, it is more sensitive to Xo. The forming of fused oxides of V205, TiO2 and Cr203 with strong inner interaction during friction is the basic reason of high fireproof performance of Ti40.
ISSN:1003-6326