<strong>Ti60</strong>合金在<strong>600 ℃</strong>混合盐雾环境中腐蚀行为的研究

doi:10.11902/1005.4537.2025.221

中国腐蚀与防护学报

2026, Vol. 46

Issue (3): 798-806 CSTR: 32134.14.1005.4537.2025.221 DOI: 10.11902/1005.4537.2025.221

研究报告

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Ti60合金在600 ℃混合盐雾环境中腐蚀行为的研究

李蕊¹, 俞利鑫², 崔宇³(

), 刘叡², 孟凡帝², 刘莉², 王福会²

^1.河北师范大学分析测试中心石家庄 050024
^2.东北大学数字钢铁全国重点实验室沈阳 110819
^3.中国科学院金属研究所师昌绪先进材料创新中心沈阳 110016

Corrosion Behavior of Ti60 Alloy in Mixed Salt Spray Environment at 600 ℃

LI Rui¹, YU Lixin², CUI Yu³(

), LIU Rui², MENG Fandi², LIU Li², WANG Fuhui²

^1.Testing and Analysis Centre, Hebei Normal University, Shijiazhuang 050024, China
^2.State Key Laboratory of Digital Steel, Northeastern University, Shenyang 110819, China
^3.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

李蕊, 俞利鑫, 崔宇, 刘叡, 孟凡帝, 刘莉, 王福会. Ti60合金在600 ℃混合盐雾环境中腐蚀行为的研究[J]. 中国腐蚀与防护学报, 2026, 46(3): 798-806.
Rui LI, Lixin YU, Yu CUI, Rui LIU, Fandi MENG, Li LIU, Fuhui WANG. Corrosion Behavior of Ti60 Alloy in Mixed Salt Spray Environment at 600 ℃[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(3): 798-806.

全文: PDF(13249 KB) HTML

摘要:

受工业污染的海洋上空环境中含有NaCl、Na₂SO₄和水蒸汽等腐蚀介质，这些腐蚀介质会对服役的航空航天飞机热端部件产生协同腐蚀作用。本文借助扫描电子显微镜(SEM)，电子探针(EPMA)和X射线衍射仪(XRD)等测试技术，基于增重变化及腐蚀产物膜微观结构与成分分析结果，探讨了600 ℃ Na₂SO₄，NaCl沉积盐环境下Ti60合金的腐蚀行为。结果表明，两种环境下整个腐蚀过程受扩散控制。NaCl和Na₂SO₄沉积盐的存在加速了Ti60合金的腐蚀过程。在Na₂SO₄盐雾环境，腐蚀产物主要由TiO₂、Ti(SO₄)₂和Na₂TiO₃组成。在75% (质量分数) Na₂SO₄ + 25% (质量分数) NaCl盐雾环境，观察到明显的晶间腐蚀，腐蚀产物由Na₂TiO₃和TiO₂组成。Ti60合金在600 ℃的75%Na₂SO₄ + 25%NaCl盐雾环境中受氧化、氯化和硫化三者协同影响。

关键词 ： Ti60合金, Na₂SO₄盐雾, NaCl盐雾, 高温腐蚀, 腐蚀机理

Abstract：

The atmospheres above polluted ocean may contain corrosive substances such as NaCl, Na₂SO₄, and water vapor etc., which can synergistically corrode the components of aeroengine compressor in service. Hence, the corrosion behavior of Ti60 alloy a candidate material for compressor blade, induced by salt spray composed of Na₂SO₄ and Na₂SO₄-NaCl mixture respectivelyat 600 ℃ was studied via mass change measurement, scanning electron microscopy (SEM), X-ray diffractometer (XRD), and electron probe microanalyzer (EPMA). The results indicated that the corrosion process in the two salts spray environments was controlled by the diffusion process. The corrosion process was promoted by the presence of the mixture NaCl and Na₂SO₄. In the Na₂SO₄ salt spray environment, the corrosion products layer was mainly composed of TiO₂, Ti(SO₄)₂ and Na₂TiO₃. In the 75% (mass fraction) Na₂SO₄ + 25% (mass fraction) NaCl salt spray environment, intergranular corrosion was clearly observed, and the corrosion products layer was composed of Na₂TiO₃ and TiO₂. According to these results, a mechanism of synergistic action of oxidation, chlorination, and sulfidation was proposed for the corrosion of Ti60 alloy in 75%Na₂SO₄ + 25%NaCl salt spray environment.

Key words： Ti60 alloy Na₂SO₄ salt spray NaCl salt spray high temperature corrosion corrosion mechanism

收稿日期: 2025-07-11 32134.14.1005.4537.2025.221

ZTFLH:

TG174

基金资助:国家自然科学基金(U22A20111);海洋关键材料重点实验室开放课题(2024K06);航空科学基金(201938050001);博士科研启动基金(L2023B52)

通讯作者: 崔宇，E-mail：ycui@imr.ac.cn，研究方向为海洋中温环境金属腐蚀与防护

Corresponding author: CUI Yu, E-mail: ycui@imr.ac.cn

作者简介: 李蕊，女，1993年生，博士生

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.221 或 https://www.jcscp.org/CN/Y2026/V46/I3/798

图1 Ti60合金的金相组织

图2 Ti60合金在600 ℃不同环境下腐蚀100 h的动力学结果

图3 Ti60合金在Na2SO4盐雾环境下腐蚀的表面腐蚀产物形貌图

图4 Ti60合金在混合盐雾环境下腐蚀后的表面腐蚀产物形貌图

图5 图3和4中箭头所示的点1~7的EDS谱图

表1 图3和4中箭头所示的点1~7的EDS结果

图6 Ti60合金在Na2SO4盐雾环境下腐蚀不同时间后的截面腐蚀产物形貌图

图7 Ti60合金在混合盐雾环境下腐蚀不同时间后的截面腐蚀产物形貌图

图8 Ti60合金在Na2SO4盐雾环境腐蚀不同时间后形成的腐蚀产物GAXRD图谱

图9 Ti60合金在混合盐雾环境腐蚀不同时间后腐蚀产物的GAXRD图谱

图10 Ti60合金在混合盐雾环境腐蚀100 h后腐蚀产物截面元素面分布

图11 M-Cl-O稳定相图[19~21]

图12 M-S-O稳定相图

图13 在600 ℃ 75%Na2SO4 + 25%NaCl混合盐雾环境下Ti60合金腐蚀机理示意图

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