x（x=0.5，0.75，1）高熵合金。研究了Zr含量對合金組織、磁性能和電化學(xué)腐蝕性能的影響。采用X射線衍射儀、掃描電鏡、振動樣品磁力計和電化學(xué)工作站對合金的磁性能和電化學(xué)腐蝕能力進(jìn)行了研究。結(jié)果表明：FeCoCrNiZrx合金具有典型的共晶組織，由面心立方固溶體和C15 Laves相組成。隨著Zr含量的增加，合金硬度呈先增大后減小的趨勢。根據(jù)合成的靜態(tài)滯回曲線可以看出，F(xiàn)eCoCrNiZr0.5合金具有順磁性和鐵磁性的混合型特征，F(xiàn)eCoCrNiZr0.75合金表現(xiàn)為順磁性，F(xiàn)eCoCrNiZr1合金表現(xiàn)為典型的鐵磁性。同時，F(xiàn)eCoCrNiZrx合金在3.5%（質(zhì)量分?jǐn)?shù)）NaCl溶液中經(jīng)歷活化與鈍化轉(zhuǎn)變。當(dāng)合金中的Zr含量為0.75%（原子分?jǐn)?shù)）時，合金極化電阻具有最大的阻抗電容半徑，鈍化膜的耐腐蝕能力最強(qiáng)。"/>

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FeCoCrNiZr x 高熵合金的磁性和電化學(xué)性能
作者:
作者單位:

1.安徽建筑大學(xué) 機(jī)械與電氣工程學(xué)院，安徽 合肥 230601;2.工程機(jī)械智能制造重點(diǎn)實(shí)驗(yàn)室，安徽 合肥 230601

作者簡介:

通訊作者:

中圖分類號:

TG132.3+2

基金項目:

安徽省高等學(xué)校自然科學(xué)研究項目Natural Science Foundation of the Higher Education Institutions of Anhui Province, China (KJ2020ZD42)


Magnetic and Electrochemical Properties of FeCoCrNiZr x High-Entropy Alloys
Author:
Affiliation:

1.School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230601, China;2.Key Laboratory of Intelligent Manufacturing of Construction Machinery, Hefei 230601, China

Fund Project:

Natural Science Foundation of the Higher Education Institutions of Anhui Province, China (KJ2020ZD42)

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    摘要:

    采用真空電弧熔煉法制備了不同Zr含量的FeCoCrNiZrx（x=0.5，0.75，1）高熵合金。研究了Zr含量對合金組織、磁性能和電化學(xué)腐蝕性能的影響。采用X射線衍射儀、掃描電鏡、振動樣品磁力計和電化學(xué)工作站對合金的磁性能和電化學(xué)腐蝕能力進(jìn)行了研究。結(jié)果表明：FeCoCrNiZrx合金具有典型的共晶組織，由面心立方固溶體和C15 Laves相組成。隨著Zr含量的增加，合金硬度呈先增大后減小的趨勢。根據(jù)合成的靜態(tài)滯回曲線可以看出，F(xiàn)eCoCrNiZr0.5合金具有順磁性和鐵磁性的混合型特征，F(xiàn)eCoCrNiZr0.75合金表現(xiàn)為順磁性，F(xiàn)eCoCrNiZr1合金表現(xiàn)為典型的鐵磁性。同時，F(xiàn)eCoCrNiZrx合金在3.5%（質(zhì)量分?jǐn)?shù)）NaCl溶液中經(jīng)歷活化與鈍化轉(zhuǎn)變。當(dāng)合金中的Zr含量為0.75%（原子分?jǐn)?shù)）時，合金極化電阻具有最大的阻抗電容半徑，鈍化膜的耐腐蝕能力最強(qiáng)。

    Abstract:

    FeCoCrNiZrx (x=0.5, 0.75, 1) high-entropy alloys with different Zr contents were prepared by vacuum arc melting. The effects of Zr content on the microstructure, magnetic properties, and electrochemical corrosion properties of the alloys were studied. X-ray diffraction, scanning electron microscope, vibration sample magnetometer, and electrochemical workstation were used to study the magnetic property and electrochemical corrosion ability of FeCoCrNiZrx alloys. Results show that FeCoCrNiZrx alloy has typical eutectic structure, consisting of face-centered cubic solid solution and C15 Laves phase. With the increase of Zr content, the hardness of the alloy increases at first and then decreases. However, according to the synthesized static hysteresis curves, FeCoCrNiZr0.5 alloy shows a mixture characteristic of paramagnetism and ferromagnetism, FeCoCrNiZr0.75 alloy has paramagnetic behavior, and FeCoCrNiZr1 alloy has typical ferromagnetism. Meanwhile, the FeCoCrNiZrx alloy undergoes activation-passivation transition in 3.5wt% NaCl solution. When the content of Zr is 0.75at%, the polarization resistance of the alloy has the maximum impedance capacitance radius, and the corrosion resistance of the passive film is the strongest.

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引用本文

雷聲,劉亞峰,李帥,張正彬,胡珊珊,孫旭.FeCoCrNiZr x 高熵合金的磁性和電化學(xué)性能[J].稀有金屬材料與工程,2021,50(9):3050~3055.[Lei Sheng, Liu Yafeng, Li Shuai, Zhang Zhengbin, Hu Shanshan, Sun Xu. Magnetic and Electrochemical Properties of FeCoCrNiZr x High-Entropy Alloys[J]. Rare Metal Materials and Engineering,2021,50(9):3050~3055.]
DOI：10.12442/j. issn.1002-185X.20210100

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  • 收稿日期:2021-02-01
  • 最后修改日期:2021-03-01
  • 錄用日期:2021-03-22
  • 在線發(fā)布日期: 2021-09-26
  • 出版日期: 2021-09-24