择优取向对热压/热变形纳米NdFeB磁体腐蚀行为的影响
Effect of Preferred Orientation on Corrosion Behavior of Hot-pressed and Hot-deformed Nanocrystalline NdFeB Magnet
查看参考文献13篇
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文摘
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利用电化学测试技术和材料分析方法研究了择优取向对热压/热变形纳米NdFeB 磁体腐蚀行为的影响。结果表明:不同取向的热压/热变形纳米NdFeB 磁体的腐蚀行为相似,但与取向轴平行截面相比,与取向轴垂直截面具有更大的局部腐蚀倾向性以及更快的溶解速率;不同取向的热压/热变形纳米NdFeB 磁体均发生Nd的优先腐蚀,且与取向轴垂直截面腐蚀产物膜中O的原子分数略大;富Nd相面积分数以及晶界数的差异是导致不同取向的热压/热变形纳米NdFeB磁体腐蚀行为差异的主要原因。 |
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其他语种文摘
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The effect of preferred orientation on the corrosion behavior of hot-pressed and hot-deformed nanocrystalline NdFeB magnet was investigated by electrochemical measurements and materials analysis methods. The results indicated that the preferred orientation had little effect on the corrosion behavior of hot- pressed and hot-deformed nanocrystalline NdFeB magnet. Polarization and electrochemical impedance spectroscopy (EIS) measurements showed that the cross section vertical to the preferred orientation exhibited a higher dissolution rate and susceptibility to localized corrosion in 3.5%NaCl solution rather than that parallel to the preferred orientation. X-ray photoelectron spectroscopy (XPS) revealed that after immersion in 3.5% NaCl solution for 30 min, both of the surfaces of the two sections showed selective corrosion of Nd. The slight differences in the corrosion behavior of the two cross sections were probably ascribed to their differences in the Nd-rich phase proportions and the guantities of grain boundaries. |
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来源
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腐蚀科学与防护技术
,2014,26(2):119-124 【核心库】
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关键词
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纳米晶
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NdFeB
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电化学
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XPS
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地址
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1.
大连理工大学材料科学与工程学院, 腐蚀与防护国家重点实验室, 大连, 116023
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中国科学院金属研究所, 腐蚀与防护国家重点实验室, 沈阳, 110016
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大连理工大学材料科学与工程学院, 大连, 116023
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钢铁研究总院功能材料研究所, 北京, 100081
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1002-6495 |
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学科
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金属学与金属工艺 |
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基金
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国家973计划
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国家自然科学基金项目
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文献收藏号
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CSCD:5094861
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参考文献 共
13
共1页
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|
1.
Mao S D. Corrosion of NdFeB permanent magnets in humid environments at temperatures up to 150°C.
J. Magn. Magn. Mater,1995,139(1/2):131
|
被引
1
次
|
|
|
|
|
2.
Sueptitz R. Effect of magnetization state on the corrosion behaviour of NdFeB permanent magnets.
Corros. Sci,2011,53(9):2843
|
被引
8
次
|
|
|
|
|
3.
Li W. Effect of hot-compaction temperature on the magnetic properties of anisotropic nanocrystalline magnets.
J. Mag,2011,16(3):300
|
被引
1
次
|
|
|
|
|
4.
Marinescu M. Magnetic properties of bulk nanocomposite permanent magnets based on NdDyFeB alloys with additions.
J. Magn. Magn. Mater,2005,290/291(2):1267
|
被引
10
次
|
|
|
|
|
5.
El-Moneim A A. The influence of Co and Ga additions on the corrosion behavior of nanocrystalline NdFeB magnets.
Corros. Sci,2002,44(18):1857
|
被引
19
次
|
|
|
|
|
6.
Song Y W. A comparative study on the corrosion behavior of NdFeB magnets in different electrolyte solutions.
Mater. Corros,2008,59(10):794
|
被引
14
次
|
|
|
|
|
7.
Bala H. Electrochemical corrosion resistance of Fe-Nd-B permanent magnets.
J. Mater. Sci,1990,25(1):571
|
被引
1
次
|
|
|
|
|
8.
Li J J. Study on corrosion behaviors of sintered Nd-Fe-B magnets in different environmental conditions.
J. Appl. Phys,2011,109(7):07A744
|
被引
7
次
|
|
|
|
|
9.
Tian H. Microstracture of single stage hot deformed anisotropic Nd-Fe-B magnets.
Phys. Stat. Sol,2007,4(12):4625
|
被引
2
次
|
|
|
|
|
10.
El-Moneim A A. Grain growth effects on the corrosion behavior of nanocrystallineNdFeB magnets.
Corros. Sci,2002,44(5):1097
|
被引
3
次
|
|
|
|
|
11.
El-Moneim A A. Corrosion behaviour of hotpressed and die-upset nanocrystalline NdFeB-based magnets.
J. Magn. Magn. Mater,2002,248(1):121
|
被引
6
次
|
|
|
|
|
12.
Rada M. Corrosion studies on highly textured Nd-Fe-B sintered magnets.
J. Alloy. Compd,2006,415(1/2):111
|
被引
7
次
|
|
|
|
|
13.
Yang X K. Electrochemical corrosion behaviors and corrosion protection properties of Ni-Co alloy coating prepared on sintered NdFeB permanent magnet.
J. Solid. State. Electrochem,2010,14(9):1601
|
被引
8
次
|
|
|
|
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