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中国腐蚀与防护学报  2019, Vol. 39 Issue (4): 306-312    DOI: 10.11902/1005.4537.2019.028
  研究报告 本期目录 | 过刊浏览 |
TiAlSiN涂层对γ-TiAl基合金抗高温氧化性能的影响
艾鹏(),刘礼祥,李晓罡,姜文涛
中国航发沈阳黎明航空发动机有限责任公司 沈阳 110043
Influence of TiAlSiN Coatings on High Temperature Oxidation Resistance of γ-TiAl Based Alloys
AI Peng(),LIU Lixiang,LI Xiaogang,JIANG Wentao
AECC Shenyang Liming Aero Engine Co. , Ltd. , Shenyang 110043, China
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摘要: 

采用多弧离子镀的方法在两种γ-TiAl基合金 (Ti-46Al-2.5V-1Cr-0.3Ni和Ti-48Al-2Cr-2Nb,原子分数) 表面制备了TiAlSiN涂层,研究了样品在800 ℃下空气中的循环氧化行为。在800 ℃循环氧化300 h后,γ-TiAl基合金表面都形成了TiO2和Al2O3混合氧化物膜,氧化膜分层;Ti-46Al-2.5V-1Cr-0.3Ni合金表面氧化膜较厚且剥落严重,而Ti-48Al-2Cr-2Nb合金氧化膜较薄,只发生了轻微剥落。表面施加Al、Si含量不同的TiAlSiN涂层显著降低了TiAl基合金的氧化速率,涂层表面氧化膜主要由TiO2α-Al2O3组成。Ti0.5Al0.4Si0.1N和Ti0.5Al0.45Si0.05N两种涂层样品表面氧化膜薄而致密,涂层未发生明显退化;Ti0.6Al0.3Si0.1N涂层样品表面氧化膜相对较厚。Al含量较高的Ti0.5Al0.4Si0.1N和Ti0.5Al0.45Si0.05N涂层抗氧化性能优于Al含量较低的Ti0.6Al0.3Si0.1N涂层的。TiAlSiN涂层与TiAl基合金之间只发生了轻微互扩散。

关键词 γ-TiAl基合金TiAlSiN涂层高温抗氧化性能离子镀互扩散    
Abstract

In order to improve high temperature oxidation resistance of γ-TiAl based alloys, TiAlSiN coatings were deposited on two alloys of Ti-46Al-2.5V-1Cr-0.3Ni and Ti-48Al-2Cr-2Nb using arc ion plating, while the cyclic oxidation behavior at 800 ℃ was comparatively assessed for the bare and coated alloys. The tested samples were characterized by means of scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS) and X-ray diffractometer (XRD). After cyclic oxidation at 800 ℃ for 300 h, the formed oxide scales composed of TiO2 and α-Al2O3 on the bare Ti-48Al-2Cr-2Nb and Ti-46Al-2.5V-1Cr-0.3Ni alloys. The oxide scale formed on the Ti-46Al-2.5V-1Cr-0.3Ni alloy was very thick and spalled seriously, and that on the Ti-48Al-2Cr-2Nb alloy was thinner and spalled slightly. Application of the TiAlSiN coatings with different Al and Si content significantly decreased the oxidation rate of the bare alloy. After oxidation at 800 ℃ for 300 h, the oxide scales formed the Ti0.5Al0.4Si0.1N and Ti0.5Al0.45Si0.05N coatings were very thin and dense, while that on the Ti0.6Al0.3Si0.1N was thicker. The oxide scales formed on the coatings also composed of TiO2 and α-Al2O3. After oxidation the degradation of Ti0.5Al0.4Si0.1N and Ti0.5Al0.45Si0.05N coatings was not apparent, however, the consumption of the Ti0.6Al0.3Si0.1N coating was obvious. Interdiffusion between the coatings and the γ-TiAl based alloys was very limited. So it can be concluded that the oxidation resistance of the Ti0.5Al0.4Si0.1N and Ti0.5Al0.45Si0.05N coatings is superior to that of the Ti0.6Al0.3Si0.1N coating, and the application of the Ti0.5Al0.4Si0.1N and Ti0.5Al0.45Si0.05N coatings can significantly improve the oxidation resistance of the γ-TiAl-based alloys at 800 ℃.

Key wordsγ-TiAl-based alloy    TiAlSiN coating    high temperature oxidation resistance    ion plating    interdiffusion
收稿日期: 2019-03-08     
ZTFLH:  TG174  
通讯作者: 艾鹏     E-mail: aecc_lm@163.com
Corresponding author: Peng AI     E-mail: aecc_lm@163.com
作者简介: 艾鹏,男,1987年生

引用本文:

艾鹏,刘礼祥,李晓罡,姜文涛. TiAlSiN涂层对γ-TiAl基合金抗高温氧化性能的影响[J]. 中国腐蚀与防护学报, 2019, 39(4): 306-312.
Peng AI, Lixiang LIU, Xiaogang LI, Wentao JIANG. Influence of TiAlSiN Coatings on High Temperature Oxidation Resistance of γ-TiAl Based Alloys. Journal of Chinese Society for Corrosion and protection, 2019, 39(4): 306-312.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.028      或      https://www.jcscp.org/CN/Y2019/V39/I4/306

图1  沉积态Ti0.5Al0.4Si0.1N涂层的表面和截面形貌
图2  沉积态TiAlSiN涂层的XRD谱
CoatingTiAlSi
Ti0.5Al0.45Si0.05N26.8622.922.44
Ti0.5Al0.4Si0.1N25.1320.324.71
Ti0.6Al0.3Si0.1N33.7216.113.03
表1  涂层成分的EDS分析结果
图3  TiAlSiN涂层在800 ℃下空气中的循环氧化动力学曲线
图4  TiAlSiN涂层在800 ℃下循环氧化300 h后的表面和截面形貌
图5  TiAlSiN涂层在800 ℃下循环氧化300 h后的XRD谱
图6  Ti-46Al-2.5V-1Cr-0.3Ni和Ti-48Al-2Cr-2Nb合金及其沉积Ti0.5Al0.4Si0.1N涂层后试样在800 ℃的循环氧化动力学曲线
图7  Ti-46Al-2.5V-1Cr-0.3Ni和Ti-48Al-2Cr-2Nb合金在800 ℃循环氧化300 h后表面和截面形貌
图8  Ti-46Al-2.5V-1Cr-0.3Ni和Ti-48Al-2Cr-2Nb合金在800 ℃下循环氧化300 h后的XRD谱
图9  沉积Ti0.5Al0.4Si0.1N涂层的Ti-46Al-2.5V-1Cr-0.3Ni合金在800 ℃循环氧化300 h后的表面和截面形貌
PointAlTiCrVNiSi
18.5548.99---------1.05
219.7352.26------1.07---
331.8862.23---1.514.38---
437.6857.080.712.551.98---
544.6752.610.811.91------
640.6052.291.914.690.51---
表2  图9b中各点的EDS分析结果
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