Results 11 to 20 of about 13,394 (213)
Gaoya dianqi, 1998 对CuCr、CuCrFe触头材料经过不同温度和不同保温时间处理后的合金导电性能进行了研究。结果表明:500℃保温4h热处理后CuCr合金电导率提高20％以上,CuCrFe合金电导率提高30％以上,并从微观组织方面分析了热处理改善合金导电性能的原因。
周文元, 吕大铭, 周武平
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Dianci bileiqi, 2013 超高压输电线路避雷线进线与变电所门型构架联接处经常出现发热现象,甚至出现过联接处烧断避雷线搭接输电线路上造成跳闸事故。本文应用远红外技术诊断了一例500 kV线路避雷线与"门"形构架联接处发热现象,详细分析了发热的形成原因,现场检查结果表明分析的准确性。同时介绍了发热点缺陷处理的方法,对避雷线绝缘联接方式的设计提出了具体建议,为防止今后出现类似情况提供了经验。
马国鹏 +4 more
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Gaoya dianqi, 1960 在大搞机械化、自动化运动中,工具车间热处理工人陈光群师付发挥了敢想敢干的精神,在党的车间领导的大力支持下,经过艰苦钻研的几次试验,创造成功了热处理电炉无人操作自动送电、停电控制装置。这一革新大大的缩短了工作中的辅助时间,提高了电炉有效的工作时间。
沈阳高压开关厂技术情报组
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The evolution of the γ′−Ni3(Al, Ti) phase in superalloys is governed by a coupled coalescence‐ripening mechanism driven by elemental diffusion. In this study, thermal exposure experiments were performed at 750°C and 800°C for durations ranging from 100 to 20,000 h.
Zhaotian Wang +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Precise control of chemical ordering in bimetallic nanocatalysts offers a route to decouple activity and selectivity in acetylene hydrogenation, but direct atomic‐scale evidence linking surface order to catalytic performance is scarce. Here, we tune Pd‐Cu nanoalloys from chemically disordered to highly ordered states by composition control and
Fan Xue +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu +11 more
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The Preparation of Diffusion Barrier Layer and Investigation of the Thermal Stability in Cu Interconnect Technology [PDF]
, 2016 随着集成电路的集成度越来越高，第一代Al互连材料由于较差的抗电迁移能力，已不能满足高性能互连材料的要求。Cu比Al具有更低的电阻率、更好的抗电迁移能力，因此，Cu取代Al成为新一代互连材料。然而，Cu互连线在较低温度下会与半导体Si元器件发生互扩散而生成Cu-Si化合物，导致电阻急剧上升，这会严重影响Cu互连线的稳定性与可靠性。为了提高Cu互连线的热稳定性，本研究选择熔点较高且在Cu中溶解度较低的金属V和Ta作为阻挡层材料；同时，通过在Cu中掺杂电阻率较低的Al元素制备得到Cu-Al合金薄膜 ...
戴拖
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
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Zhongguo youzhi, 2022 采用不同温度、时间红外预热处理紫苏籽，探讨其对压榨紫苏籽油品质（包括理化指标、脂肪酸组成、褐变程度、活性成分含量）、抗氧化活性及氧化稳定性的影响。结果表明：经红外预热处理制备的紫苏籽油理化指标、脂肪酸组成均符合LS/T 3254—2017《紫苏籽油》要求，脂肪酸组成与未经红外预热处理的无显著差异，且180 ℃红外预热处理30 min能够显著提高紫苏籽油多酚和黄酮含量、抗氧化活性及氧化稳定性（P＜0.05）。此外，相关性分析表明紫苏籽油褐变程度、多酚含量、黄酮含量与抗氧化活性 ...
贾晓倩1，张琪1，刘和平2，王新顺2，曾云军3，钟耕1JIA Xiaoqian1，ZHANG Qi1，LIU Heping2，WANG Xinshun2， ZENG Yunjun3，ZHONG Geng1
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Effects of Silica on Phase Transformation and Microstructure of Sol-Gel Derived Zirconia Fibers [PDF]
, 2015 本论文以氧化锆溶胶和二氧化硅溶胶为原料，采用溶胶凝胶法制备了不同二氧化硅含量的氧化锆陶瓷纤维。其中氧化锆溶胶采用氧氯化锆和过氧化氢反应合成，二氧化硅溶胶由实验室自制得到。采用29SiNMR、XRD、FTIR、SEM、TEM、TG-DTA等技术系统地研究了SiO2和Y2O3对溶胶凝胶法制备的ZrO2纤维相变和微观组织的影响。 研究发现，氧化锆溶胶中主要是以“Zr-O-Zr”长链结构形式存在，从而形成可纺性的溶胶。在纯氧化锆纤维中加入二氧化硅后，稳定了氧化锆的四方相，从而避免形成“皮芯结构”的纤维 ...
蔡武集
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