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摘要
在NaSiO3(2g/L)、NaH2PO2(2g/L)、NaAlO2(3g/L)、NaF(1g/L)的混合电解液中采用微弧氧化技术在TC11钛合金表面制备氧化时间不同的微弧氧化膜。利用扫描电子显微镜(SEM)、能谱仪(EDS)分析各氧化时间下膜层的表面形貌和各元素的含量,采用显微硬度计测出微弧氧化膜的硬度。以某型牵引火炮身管为实验平台,采用自行设计的烧蚀实验装置模拟发射状态下火炮身管内膛工况条件。在每次装药(14孔火药)为15g条件下,对膜层进行重复烧蚀检实验,检测微弧氧化膜的耐烧蚀性能。结果表明,氧化时间为20min时TC11表面微弧氧化膜具有良好的微观形貌,烧蚀20次后质量损失率最低,为0.0264%。本实验可以为火炮轻量化以及身管内膛耐烧蚀问题提供参考借鉴。
Abstract
In the mixed electrolyte of NaSiO3 (2g/L),NaH2PO2 (2g/L),NaAl2O3 (3g/L) and NaF (1g/L),the oxide films was prepared on the surface of TC11 by micro-arc oxidation with different oxidation time.The surface morphology and the content of each element of the film were analyzed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).The hardness of the film was measured using a microhardness tester.Using a type of traction gun body tube as a test platform,a self-designed ablation test device was used to simulate the operating condition of the gun barrel within the launch condition.The film was subjected to a repeated ablation test with 15g of gunpowder per charge (14 holes) to test the ablation resistance of the film.The results showed that when the oxidation time was 20min,the TC11 surface oxide film had a good micro-morphology,and the mass loss rate after 20 times of ablation was the lowest and was 0.0264%.It can provide reference for the lightweight of artillery and resistance to ablation inside the body.
关键词
TC11钛合金
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微弧氧化
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微弧氧化膜
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耐烧蚀
Key words
TC11 titanium alloy
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micro-arc oxidation
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micro-arc oxidation film
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ablation resistance
氧化时间对TC11钛合金表面微弧氧化膜的耐烧蚀性能影响[J].
化工新型材料, 2019, 47(9): 151-154 DOI:
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