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硼酸缓冲溶液中pH值和腐蚀产物对低碳钢活化/钝化敏感性的影响阳靖峰1,董俊华1,柯伟1,陈楠1(1.辽宁省沈阳市科学院金属研究所)摘 要:研究了在pH值分别为8,9和10的除氧硼酸缓冲溶液中,低碳钢腐蚀产物对其活化/钝化敏感性的影响.实验结果表明,在pH值为8时,低碳钢一直处于活性溶解状态,不受腐蚀产物影响;在pH值为9和10时,表面腐蚀产物使低碳钢钝化,其腐蚀电位最后稳定于钝化区间.XPS和XRD等分析结果表明,腐蚀产物由Fe6(OH)12B4O7和γ-FeOOH组成.腐蚀产物覆盖的低碳钢比裸低碳钢更容易发牛......
℃/s. Slight shrinkage is observed. Heterogeneous microstructures containing martensite, bainite, pearlite and nickel-rich retained austenite are observed in the material. Higher martensite content... Sinter-hardening properties of partially-diffuse alloyed Fe-Cu-Ni-Mo-C material prepared by die wall lubricated warm compaction XIAO Zhi-yu(肖志瑜), SHEN Yuan-xun(沈元勋), NGAI Tungwai Leo(倪东惠......
, CARTER P, REED R C. On the diffusion of aluminium and titanium in the Ni-rich Ni-Al-Ti system between 900 and 1 200 ℃[J]. Acta Materialia, 2001, 49(5): 861-875. [21] BAHRI O, FRUEHAN R J. Thermodynamics...:TG146.1 文献标志码:A Formation mechanism of primary carbides in FGH96 superalloy CHAI Guo-ming1, CHEN Xi-chun2, GUO Han-jie1 (1......
Mine tailings as a raw material in alkali activation: A reviewJenni Kiventer?,Priyadharshini Perumal,Juho Yliniemi,Mirja IllikainenFibre and Particle Engineering Research Unit, University of Oulu摘 要... are discarded near the mining sites, typically under water. The primary environmental concerns of mine tailings are related to their heavy metal and sulfidic mineral content. Oxidation of sulfidic minerals can......
NUMERICAL SIMULATION OF CELLULAR/DENDRITIC PRIMARY SPACING L.Xiao1,W.Q.Zhang1 (1.Department of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China) Abstract:A numerical model has been established to calculate the primary spacing of cellular or dendritic structure with fluid flow considered. The computing results show that the primary spacing depends......
particles and rGO distribute hierarchically and the primary Cu2O particles are encapsulated well in the graphene nanosheets. The electrochemical performance of Cu2O/rGOs is enhanced compared with bare Cu2O.... In addition, the composites retain 305.8 mA×h/g after 60 cycles at various current densities of 50, 100, 200, 400 and 800 mA/g. Key words: cuprous oxide; reduced graphene oxide; anode material 1 Introduction......
Site selection of emergency material warehouse under fuzzy environmentLIU Cheng(刘诚), CHEN Ze-hui(陈则辉), GONG Yu-yan(龚玉燕)(School of Mathematics and Statistics, Central South University, Changsha 410083, China)Abstract:The objective of this work was to determine the location of emergency material warehouses. For the site selection problem of emergency material warehouses, the triangular fuzzy......
appropriate material. RMC is defined as the cost of raw material that will be used in fabricating the product. 3.2.4 Weight (W) One of the primary reasons for material engineers to investigate composite...; Material selection of polymeric......
