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of the three alloys are 14%,12% and 6% respectively from spray end to the other one. There exists a linear relationship between hardness and the logarithm of cooling rate and the slopes of curves decrease in sequence. The low mass ratio of Zn to Mg (high Mg content) and high Cu content of 7055 and 7050 alloys result in more equilibrium η phases with larger size precipitation during slow cooling rate......
Precipitation Behavior and Microstructural Evolution of Ferritic Ti–V–Mo Complex Microalloyed SteelKe Zhang1,2,Hui Wang1,2,Xin-Jun Sun3,Feng-Li Sui1,2,Zhao-Dong Li3,En-Xiang Pu3,Zheng-Hai Zhu1,2,Zhen... Engineering,Anhui University of Technology3. Central Iron and Steel Research Institute摘 要:Precipitation behavior of(Ti,V,Mo)C and microstructural evolution......
of properties. The results show that for the cast steel after deformed, the amount of granular carbides of precipitation during the cooling decreased with the increase of the cooling rate, but the hardness...Effect of Cooling Rate after hot Deformation on Structure and Mechanical Properties of Low Alloy Wear Resistance Cast iron刘剑平,李丽霞摘 要:The effect of cooling......
predicted at the later stages of self-healing (>28 d), mainly because in healing process, the self-healing rate is reduced [23]. The crack mouth is mainly deposited by the precipitation of calcium... precipitation, and it can be used to predict the self-healing rate to some extent, especially for mortar with only chemical expansion additives or cracks appearing in the later stage due to their higher......
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Novel High Rate Lithium Intercalation Cathode Materials Cheng Yushan1,Zhang Yong2,Liu Yuwen1,Hu Xinguo2 (1.Jiangmen JJJ Battery Co., Ltd, Jiangmen 529000, China;2.Department of Applied Chemistry... of V2O5. A new type of V2O5/carbon/Nd2O3 composite was prepared by mixing vanadium oxide hydrosol, acetone, carbon and Nd2O3 powder. High rate discharge/charge property of the composite electrode......
值从1.5增至2.5,沉砷率由83.12%升至87.15%,仅增加4.03%.由此说明,当pH值较低时,适当升高pH值有利于提高沉砷率,但升至1.5后,pH值对沉砷率的影响不明显. 图2 初始pH值对沉砷率的影响 Fig. 2 Effect of initial pH value on arsenic precipitation rate 由图3可知,初始pH值对析出物的...响 Fig. 5 Effect of Fe/As molar ratio on arsenic precipitation rate 图6 不同Fe/As摩尔比下析出物的XRD谱 Fig. 6 XRD patterns of precipitates obtained at different Fe/As molar ratios 图7 不同Fe......
and the coarsening rate increases with the increase of reheating temperature. The eutectic phase is produced in the molten region when quenched in the cold water. The microstructure evolution in the semisolid..., the same thing as that in the second stage happens except that all the α(Al) matrixes are melted. Key words: spray forming; Al-Si alloy; semisolid; coarsening rate 1 Introduction Spray forming......
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on the seeded precipitation rate of sodium aluminate solution, the particle size and morphology of the products were studied. The results show that when the added amount of the nonionic surfactant ranges from 100 mg/L to 150 mg/L, the seeded precipitation rate can be raised by about 6%, and its accelerating effects on the agglomeration of Al(OH)3 crystals and inhibiting secondary nucleation......
