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TC4钛合金在甲醇溶液中的应力腐蚀敏感性研究 殷京瓯1,张琳2,卢剑3,丁宝峰2,吴荫顺2,曹备2 (1.西北有色金属研究院,陕西,西安,710016;2.北京科技大学,北京,100083;3.宝鸡有色金属加工厂,陕西,宝鸡,721014) 摘要:采用慢应变速率试验,辅以扫描电镜,金相观察等分析测试技术,研究了钛合金TC4在甲醇,盐酸-甲醇溶液中的应力腐蚀敏感性.试验结果表明,TC4钛合金在甲醇中具有应力腐蚀敏感性.甲醇中加入盐酸,明显地提高了TC4的应力腐蚀敏感性.TC4钛合金在盐酸-甲醇溶液中的应力腐蚀裂纹源自点蚀孔底部. 关键词:钛合金; 应力腐蚀; 甲醇溶液; 点蚀; titanium alloy; stress corrosion; methanol solution; pitting corrosion; [全文内容正在添加中] ......
formation mechanism is also discussed. The ternary Pt/Au@Pd e G composites can also be synthetized by the subsequent Pt doping. The catalytic performance of Au@Pd e G composites toward methanol electro-oxidation in acidic media is investigated. The results show that Au@Pd e G composites exhibit higher catalytic activity, better stability and stronger tolerance to CO poisoning than Pd-G and Au-G......
Influence of copper content on structural features and performance of pre-reduced LaMn1-xCuxO3 (0≤x<1) catalysts for methanol synthesis from CO2/H2贾立山1,2,高敬1,2,方维平3,李清彪1,21. Department of Chemical... for methanol synthesis from CO2 hydrogenation were prepared by a sol-gel method. The catalytic performances were strongly dependent on the copper content. XRD investigation revealed that the single......
Influence of copper content on structural features and performance of pre-reduced LaMn1-xCuxO3 (0≤x<1) catalysts for methanol synthesis from CO2/H2贾立山1,2,高敬1,2,方维平3,李清彪1,21. Department of Chemical... for methanol synthesis from CO2 hydrogenation were prepared by a sol-gel method. The catalytic performances were strongly dependent on the copper content. XRD investigation revealed that the single......
Characterization and Methanol Adsorption of Walnutshell Activated Carbon Prepared by KOH Activation余琼粉,李明,JI Xu,QIU Yu,ZHU Yuntao,LENG CongbinSolar Energy Research Institute,Yunnan Normal University摘 要:Walnut-shellactivated carbons(WSACs)were prepared by the KOH chemicalactivation.The effects of carbonization temperature,activation temperature,and ratio......
直接甲醇燃料电池铂基阳极催化剂碳载体发展 杨民力1 (1.北京有色金属研究总院国家有色金属及电子材料分析测试中心,北京,100088) 摘要:碳载铂基材料是最常用的甲醇电氧化催化剂,而载体对催化剂颗粒的分散,活性以及耐久性有着显著的影响.所述文献中的碳载体材料主要分为7类:Vulcan XC-72,空心碳球,有序介孔碳,纳米纤维,纳米管,纳米角和石墨烯.新型碳载体的高比表面积和适宜的多孔性促进了催化剂组分的分散,有利于改善三相界面和提高铂基金属的利用率.表面改性以及着眼于改善碳腐蚀性能的石墨化和掺杂将被继续地深入研究,石墨烯的探索以及多孔,多层次微观结构载体的发展应被重视. 关键词:铂; 阳极催化剂; 直接甲醇燃料电池; 碳载体; platinum; anode catalyst; direct methanol fuel cell; carbon supports; [全文......
:single crystal superalloy; defect tolerance; directional solidification; creep rupture; [全文内容正在添加中] ......
程度上也抑制了对它们的生长;而L. ferriphilum YSK在氟胁迫下的生长非常稳定. 关键词:浸矿微生物;共培养体系;氟耐受性;群落动态 中图分类号:Q819 文献标志码:A Fluoride tolerance of co... of South China, Hengyang 421001, China; 3. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: In order to explore the fluoride tolerance......
单分子物理和单分子生物学李民乾摘 要:最近在<自然>,<科学>上,互联网上和一些基金委遴选优先支持的学科领域中频频出现了单分子物理学,单分子生物学的新学科.这是物理学,化学,生物学及它们的交叉学科研究的新发展.单分子物理学这里的物理学科应是指物理科学,包括物理,化学等学科.科学发展至20...关键词:......
to soybean being 3:4 exhibits brilliant electrocatalytic performance, excellent long-term stability and methanol tolerance for the ORR, with the onset potential and the half-wave potential of the ORR being... in O2-saturated 0.1 mol/L NaOH aqueous solution for 7200 s. The methanol-tolerance performance of the catalyst was performed as the same as the LSV except for the 1 mol/L methanol in the O2-saturated......