Results 21 to 30 of about 19,396 (151)
Gongye shui chuli, 2016 在模拟真实管网水力条件下,从腐蚀速率、铁释放速率、腐蚀产物形貌及成分等方面研究了低浓度磷酸盐对碳钢腐蚀的影响。研究发现,磷酸盐为0.8mg/L时达到极值,腐蚀抑制效果最好,碳钢的腐蚀速率可降低15.66%。磷酸盐可抑制γ-FeOOH的形成,同时形成磷铁矿,使腐蚀产物更加致密,从而抑制腐蚀。磷酸盐对铁释放存在初期加速作用,可能是磷酸盐促进铁元素向稳定铁氧化物转变,使腐蚀提前达到稳定状态的重要原因,最终抑制腐蚀。
张雅君 +4 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
wiley +1 more source
Shiyou jixie, 2014 输油管道内壁的腐蚀主要由原油中的腐蚀介质引起。针对管道内壁存在氯化物腐蚀的现状，以管道出口站为研究对象，采用极化曲线测试方法和电化学阻抗谱测试技术，对目前常用的3种管线钢X70、X80和X100进行内腐蚀行为研究。研究结果表明，在试验的Cl-质量浓度范围内，呈现出低浓度Cl-促进腐蚀，高浓度Cl-抑制腐蚀的趋势；当Cl-质量浓度为40 mg/L时，3种管线钢的腐蚀速率最大，腐蚀最严重，X70耐Cl-腐蚀性能最差；当Cl-质量浓度较低时，X100的耐腐蚀性能最强；当Cl-质量浓度较高时 ...
王金刚, 李新义, 高英
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanical dynamic sealing components are usually subjected to the erosion of a hydrothermal environment; thus, the selected service materials must meet stringent requirements for superior self‐lubrication, corrosion resistance, and thermal stability.
Yanchun Zhao +8 more
wiley +1 more source
Questa è una mini opera filosofico-scientifica che unisce riflessione e descrizione per esplorare l’origine, l’evoluzione e il destino dell’universo. Nasce dal desiderio di coniugare la profondità lirica della filosofia con la concretezza descrittiva della fisica, proponendo una nuova visione: l’universo non come frutto di perfezione, ma come ...
openaire +3 more sources
Dianci bileiqi, 2017 针对易腐蚀地区中金属接地体存在的易腐蚀问题,提出了耐腐蚀能力强的柔性石墨接地材料。对柔性石墨复合接地材料本体进行了耐腐蚀能力试验,试验结果表明,柔性石墨接地体腐蚀速率远低于铜与钢,具有很强的耐腐蚀性能。然后对柔性石墨接地体接头进行了加速腐蚀试验,试验结果表明,接头会发生剧烈的电化学反应,是柔性石墨接地体防腐的重点。为了解决接头防腐问题,提出采用防腐石墨布的方法。最后介绍了柔性石墨接地体在易腐蚀地区中的示范应用工程。
李恒真 +5 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The mechanical properties and corrosion resistance of traditionally as‐cast soft magnetic Ni‐50Fe alloys often fail to meet current application requirements. To address this limitation, this study employed direct energy deposition (DED) to fabricate two kinds of soft magnetic alloys: Ni‐50Fe and Ni‐48.5Fe‐1.5Cu‐1.5Ti.
Hui Xue +10 more
wiley +1 more source
Haiyang gongcheng zhuangbei yu jishu, 2019 采用腐蚀浸泡和电化学方法研究了砂在腐蚀模拟介质中对X65管线钢的腐蚀行为影响，及缓蚀剂ZDE的缓蚀性能。实验结果表明，砂沉积使得X65钢在腐蚀模拟介质中的腐蚀速率增加，腐蚀加重。ZDE属于一种混合型缓蚀剂，在模拟盐溶液中对X65钢的腐蚀表现出了一定的阻碍作用。60°C，ZDE加注浓度为0.15 g/L时，无砂工况的缓蚀效率达83.52%；而试样表面砂覆盖后，缓蚀剂有效作用浓度下降，缓蚀效率降低。缓蚀剂ZDE加入后，其作用于碳钢表面，形成一层保护膜，使得金属/溶液界面处的电荷转移电阻增加 ...
向婉倩 +3 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable Zn‐based alloys are promising candidates for temporary implants, yet excessive Zn2+ release during degradation may induce cytotoxicity and adverse tissue responses. In this study, Zn‐xBa alloys (x = 0.1 wt%, 0.5 wt%, 1.0 wt% and 3.0 wt%) were developed to achieve controlled corrosion behaviors with improved biocompatibility.
Liu‐Dang Fang +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Graphene‐reinforced copper (Gr/Cu) composites have attracted considerable attention because of their potential to achieve a synergistic enhancement of strength, electrical conductivity, and corrosion resistance; however, the poor dispersion of graphene in the Cu matrix remains a key limitation for their further development.
Wenjing Zhang +12 more
wiley +1 more source