Results 41 to 50 of about 165,790 (164)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The engineering application of traditional nano‐bainite steel, also known as low‐temperature bainite steel, has been restricted due to its relatively low toughness and the prolonged isothermal transformation time during manufacturing processes.
Jin‐Zhou Zhang +7 more
wiley +1 more source
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
升高CO2浓度和升温下滇杨(Populus yunnanensis)雌雄植株对盐胁迫的响应差异
, 2013 自工业革命以来，随着人类技术的发展和化石燃料的使用，全球CO2浓度排放不断增加，导致全球气温升高。升高CO2浓度和升温不仅已经成为植物生存的基本背景，而且带来很多环境问题，如加剧的盐胁迫。另一方面，雌雄异株植株由于性比上的分化及生境上的隔离，可能比其他植物种对环境改变和气候变化更为敏感。以往的研究发现，雌雄异株植物在胁迫条件下具有显著的性别差异，雄株在胁迫下比雌株生长的更好，然而由于气候变化下升高CO2浓度和升温的生存背景，预测未来雌雄异株对环境胁迫的响应需要考虑到气候变化的因素。本研究以滇杨为模式植物，
李玲
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Sodium metal batteries hold significant promise for large‐scale energy storage due to the high theoretical capacity and abundant sodium sources, yet sodium‐metal anodes are hindered by dendrite propagation, unstable solid electrolyte interphase, and poor cycling efficiency arising from uneven Na deposition and volume changes.
Nan Xing +7 more
wiley +1 more source
, 1995 报道了硬度HRC为20和40的两种30CrMnSi材料在100-900℃的力学性能及升温率、应变率和热处理条件对抗拉强度、屈服强度的影响。在低温区,材料性能随温度的升高,呈现缓慢下降,其数值与常温相差不多,热处理状态对该区影响甚大,升温率有一定影响; 在高温区,材料强度大大降低,其数值随温度变化不大,不同升温速率的影响及热处理状态影响消失; 在中温区,材料性能随温度升高呈现快速下降趋势,热处理状态对材料性能影响大 ...
孙原龙 +3 more
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Gaoya dianqi, 2021 以隔离开关关键零部件触头为研究对象,建立温升理论模型,通过±60℃高低温试验平台,测试了1 000次机械操作前后触头表面夹紧力、压紧弹簧力值、触头磨损率和回路电阻等通流参数,设计触头温升试验,定量研究高低温对触头通流能力的影响。建立温度与触头夹紧力、镀银层磨损量和接触电阻的关系曲线,分析了触头夹紧力、镀银层和接触电阻随温度变化情况,通过试验研究可知,低温环境对触头温升变化没有高温影响大,为隔离开关触头优化改进和通流能力的提升奠定理论基础。
徐刚 +9 more
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Giga‐casting, a near‐net‐shape manufacturing process widely used in sectors such as new energy vehicles and aerospace, demands aluminum alloys with high integration, efficiency, and comprehensive performance. However, traditional die‐cast alloys still face two core bottlenecks: the strength–ductility trade‐off and high‐temperature ...
Zhanwei Su +3 more
wiley +1 more source
, 2008 快速程序升温气相色谱是对沸程较宽、组成相对简单混合样品进行快速分离分析的一种有效手段。本论文的研究目的在于研究一种能够在低功率消耗下，实现高速率线性程序升温的快速程序升温气相色谱系统，既适合实验室快速GC应用分析，又可能应用在便携式快速气相色谱现场快速检测中。 本文采用直热电阻加热技术，开展了基于不锈钢毛细管气相色谱柱的直热式快速升温系统的研究。采用先进的窄脉冲调制加热方式，通过控制脉冲占空比，给每个脉冲加热所产生的色谱柱温度梯度提供热传导均温的时间 ...
许峰
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Thermo‐responsive hydrogels based on poly(N‐isopropylacrylamide) (PNIPAM) are promising candidates for soft actuation, yet their practical applications are often constrained by sluggish thermo‐responsive kinetics and insufficient mechanical robustness.
Hui Liu +5 more
wiley +1 more source
, 2002 本实用新型涉及真空技术，具体地说是一种直流程序升温仪。由光电隔离放大器、模拟放大器、光电耦合驱动器、电流调整器、主直流电源、辅助直流电源组成，其中：光电隔离放大器以计算机D/A端口控制电压为输入信号，其输出信号经模拟放大器至光电耦合驱动器、驱动电流调整器，电流调整器由主直流电源控制，其输出端的直流电流送入电炉，电炉采样信号接模拟放大器输入端；辅助直流电源加到光电耦合驱动器的输出端。它结构简单、价格低廉、运行可靠 ...
王德峥, 朱晓雷
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