Results 21 to 30 of about 530,612 (168)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The intricate corrosion environment necessitates the polymeric coating's adaptability to the surroundings. In this work, the integration of rare‐earth Ce(III) ions and ethylene diamine tetramethylene phosphonic acid (EDTMP) in a layered double hydroxide (LDH) material is developed to enhance the corrosion protection and anti‐wear properties of
Yangu Liu +9 more
wiley +1 more source
Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...
Shumin Ye +13 more
wiley +1 more source
Dianci bileiqi, 2010 结合工程实例,说明了降阻材料在实际工程中的应用要综合考虑降阻效果、防腐效果、长效性和稳定性等因素,认为GPF-94高效膨润土降阻防腐剂是具有优越的综合性能的降阻材料;水平外引在设计中需要考虑合适的位置、面积以及均压效果和使用寿命,使降阻得以科学、经济、安全地实现。
杨鑫, 汤昕, 徐刚, 李百挡
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Dianci bileiqi, 2023 现行输电线路杆塔接地施工往往受制于耕地植被、道路建筑、征地赔偿成本等原因无法采用外延降阻。针对有限施工面积条件下杆塔接地网的接地降阻问题，提出并行输电线路杆塔级联接地降阻策略并验证其可行性。首先，建立相邻输电线路杆塔接地网级联接地散流计算模型，通过仿真分析了接地材料参数、级联引线长度、土壤电阻率、入地电流频率等因素对接地电阻的影响规律；然后，对比分析级联接地模型与方框外延接地模型的降阻效率；最后，分析了相邻杆塔接地网级联条件下的导体电位分布特征。计算结果表明：相比于传统的方框外延降阻方式 ...
刘志祥 +5 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
Dianci bileiqi, 2019 为了提高杆塔接地装置的降阻效率,通过电磁分析软件CDEGS建模,研究了降阻材料敷设厚度和敷设位置对接地电阻的影响。结果表明:随着降阻材料敷设厚度的增加,一维直线型接地装置的工频接地电阻和冲击接地电阻的降低呈现出先快后慢的趋势,并且土壤电阻率越高,接地电阻降幅越明显。至于敷设位置,对于放射型接地极,土壤电阻率为100～2 000Ω·m时,对射线敷设就可以达到全部敷设的降阻效果。对于复合型接地极,仅射线敷设和仅垂直接地极敷设降阻效果相同。土壤电阻率为2 000Ω·m时,射线 ...
马超 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng +7 more
wiley +1 more source
Dianci bileiqi, 2012 发电厂、变电站接地网普遍大量使用普通碳钢或镀锌钢作为接地材料,这就造成了两大问题:接地体腐蚀严重和接地体电阻太大。为解决这两大问题,工程上采取了一些方法,如在降阻材料中添加降阻剂,利用电解地极法、导电水泥、导电涂料、铜接地体和接地模块等方法,但是这些方法都存在一定的局限性。笔者提出了一种以石墨为基础材料的新型实用高效降阻接地模块,从接地电阻计算理论出发,综合高效降阻接地模块成本和试验数据,对最初的8个材料配比方案进行各方面的论证,并实际制成4种形状的新型实用高效接地模块,以满足不同条件的使用要求 ...
王培军, 付学文, 魏智娟
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Dianci bileiqi, 2020 输电线路杆塔接地网在外延、垂直接地等措施受限时常采用辅助降阻材料降阻,实际接地工程采用接地模块时缺少统一规范性指导,在应用时存在一些盲目施工、降阻效率低等问题。采用CDEGS软件针对新型辅助降阻材料——柔性石墨复合接地模块的接地特性进行仿真计算研究,针对"一"字型、方框型以及方框射线型接地网采用柔性石墨复合接地模块时的降阻效率进行计算,分析模块敷设位置、敷设密度、敷设方式、接地网面积等因素对接地特性的影响规律,针对实际输电线路采用柔性石墨复合接地模块降阻给出相应施工建议。
胡元潮 +5 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source