Microstructure, corrosion behavior and rust resistance of Ti and Ce added invar alloys
Microstructure, corrosion behavior and rust resistance of Ti and Ce added invar alloys
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Ti、Ce添加因瓦合金的显微组织、腐蚀行为及防锈性能
DOI：
10.1088/2053-1591/ac19e7
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发表时间：
2021
影响因子：
2.3
通讯作者：
Liu Hao
中科院分区：
文献类型：
--
作者：
Liu Kailun;Chen Cuixin;He Jun;Liu Baoxi;Ma Bin;Xue Haitao;Yang Bingchen;Wang Shuo;Liu Hao
本文详细研究了钛和Ce对因瓦合金组织、腐蚀行为和防锈性能的影响。加入适量的Ti和Ce，可形成可作为非均质形核核心的析出相，促进因瓦合金的组织细化和均匀化。此外，还研究了不同钛和Ce含量的因瓦合金的电化学行为。结果表明，随着合金元素的加入，合金的自腐蚀电位变为正值，自腐蚀电流减小，表明钛和Ce的加入有利于改善合金的腐蚀性能。这主要是因为钛和Ce容易与不利元素结合形成析出物，从而减少了影响合金耐蚀性的因素。选用耐蚀性能较好的因瓦合金进行浸渍试验。X-射线衍射分析表明，钛和Ce的加入增加了α-FeOOH的含量，增强了防锈层的保护作用。
In this study, the effects of Ti and Ce on the microstructure, corrosion behavior and rust resistance of invar alloys were investigated in detail. The precipitation phase which can be used as the core of heterogeneous nucleation can be formed by adding an appropriate amount of Ti and Ce, which promotes microstructure refinement and homogenization of the invar alloy. Moreover, the electrochemical behavior of invar alloys with different Ti and Ce contents was studied. The results show that with the addition of alloying elements, the self-corrosion potential of the alloy becomes positive, and the self-corrosion current decreases, indicating that the addition of Ti and Ce is beneficial for improving the corrosion properties of the alloy. This is primarily because Ti and Ce combine easily with unfavorable elements to form precipitates, which reduces the factors affecting the corrosion resistance of the alloy. The invar alloy with superior corrosion resistance was selected for the dipping test. X-ray diffraction analysis showed that the addition of Ti and Ce increased the amount of α-FeOOH and enhanced the protective effect of the antirust layer.
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