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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Corrosion behavior of magnetic refrigeration material La-Fe-Co-Si in distilled water
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Corrosion behavior of magnetic refrigeration material La-Fe-Co-Si in distilled water

机译：磁性制冷材料La-Fe-Co-Si在蒸馏水中的腐蚀行为

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摘要

The corrosion behavior of magnetic refrigeration material La(Fe_(0.94)Co_(0.06))_(11.7)Si_(1.3) in distilled water has been studied using X-ray diffraction analysis, weight loss method, scanning electron microscopy and X-ray photoelectron spectroscopy. Results show that La(Fe_(0.94)Co_(0.06))_(11.7)Si_(1.3) compound suffers electrochemical preferential corrosion in distilled water. La(Fe_(0.94)Co_(0.06))_(11.7)Si_(1.3) compound contains three phases which are matrix phase, a small amount of ct-Fe phase and La-rich phase. The matrix phase with NaZn_(1.3) structure works as anode to be corroded. The final corrosion products on sample surface are La_2O_3, ?-Fe(OOH), Co(OH)_2 and H_2SiO_3, respectively. Corrosion has decreased the maximum magnetic entropy change of the compound.
机译：利用X射线衍射分析，失重法，扫描电镜和X射线研究了磁性制冷材料La（Fe_（0.94）Co_（0.06））_（11.7）Si_（1.3）在蒸馏水中的腐蚀行为。光电子能谱。结果表明，La（Fe_（0.94）Co_（0.06））_（11.7）Si_（1.3）化合物在蒸馏水中遭受电化学优先腐蚀。 La（Fe_（0.94）Co_（0.06））_（11.7）Si_（1.3）化合物包含三个相，分别是基体相，少量ct-Fe相和富La相。 NaZn_（1.3）结构的基体相作为阳极被腐蚀。样品表面的最终腐蚀产物分别为La_2O_3，α-Fe（OOH），Co（OH）_2和H_2SiO_3。腐蚀降低了化合物的最大磁熵变。

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