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The optimal process conditions are determined from the test, which will support the production in terms of theory and data. 1 Experimental Materials and Method 1.1 Experimental materials 1) The lean Cd solution, used as subject, is at pH 4.0~4.5, containing Zn 128.1g/L, Mg 20.54g/L, Na 2.66g/L, F 120mg/L. 2) Saturated NaF solution 46.8 g/L at 60 ℃; 10 g/L NaOH solution; H2SO4 solution. 1.2 Experimental Method With the single-factor test method, the NaF-based Mg removal test is conducted to investigate impact of NaF dose (prepared into appropriate saturated solution before being added into the lean solution), pH(conditioned with NaOH and H2SO4), the reactive duration, and the reactive temperature on NaF-based Mg removal.
Journal of the Chinese Rare Earth Society, 2010, 28(01):216-221
Journal of the Chinese Rare Earth Society, 2010, 28(01): 212-215
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Numerous techniques have been used to obtain fluorine doped SnO2 materials.
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As is well known that the maximum stress in stress concentration area on each double-notched specimen is not equal, but the stress will rapidly reduce and will become very close to the yield stress of materials when approaching the boundary of the stress concentration area.
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Friction seems to be anisotropic with directions linked to the material anisotropy.
The yarn-to-yarn samples have been obtained by the “unweaving” of the same material.
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Materials and Methods Two different titanium alloys, commercially pure titanium (Grade 2 [8]) and Ti-6Al-4V (Grade 5 [8]), were selected as experimental material for this study.
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CaCO3 is one of the materials that can be used in this fabrication as an additive.
The materials used in this experiment.
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Laser and fluid chemical etching of the difficult-to-cut materials for large-scale machining is proposed by our research group in recent years [1].
Experimental Materials and Research Methods Cr12 mold steel, W18Cr4V high speed steel are chosen as experimental materials, corrosion medium is diluted hydrochloric acid and nitric acid solution.
HCl as the corrosive combining etching Cr12: For oxygen the material oxidation reaction takes place first.
Therefore, the chemical reaction of combining processing primarily is the oxidation of materials reaction and oxide dissolution reaction.
Acknowledgements The work is supported by the National Nature Science Foundation of China (program No.50675001) and the Nature Science Foundation of Anhui Province (No. 090414166） References [1] Genfu Yuan，Yansheng Yao，shaofeng Zhu and Yuanlong Chen: 3rd Pacific International Congress on Applications of Lasers and Optics（PICALO）April 16 -18, 2008, Beijing [2] Yuanlong Chen, Bichao Xu, Genfu Yuan etal: Proceedings of 2007 annual conference on Chinese Mechnical Engineering, China Machine Press, 11 (2007) [3] Yuanlong Chen, Bichao Xu, Genfu Yuan etal: China Mechanical Engineering, 20 (11),(2009): p. 1356 [4] Yuan Genfu :Chinese Journal of Lasers[J], 34 (2007)：p. 460 （b）High magnification morphology （a）Machined surface topography

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