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硫氰酸盐分光光度法测定钛合金中钼的测量不确定度评定张殿凯1,李满芝1,臧慕文1,童坚1(1.北京市北京有色金属研究总院)摘 要:对硫氰酸盐分光光度法测定钛合金中钼含量的不确定度来源进行了辨别,并在此基础上对测定过程中的不确定度分量进行了合理评定.测量不确定度主要来源于试样称量,标准溶液配制,校准曲线拟合,各种玻璃量器的使用及测量重复性.依据不确定度评定的步骤,分析和计算得到了各分量标准不确定度及合成标准不确定度,最后合成标准不确定度乘以95%置信概率下的扩展因子2获得测量结果的扩展不确定度.关键词......
Effect of dopant content on microstructure and properties of Si-Al-K doped molybdenum LI Da-cheng(李大成)1, ZHOU Zhang-jian(周张健)2, PU Chun-yang(卜春阳)1 1. Technology Center, Jinduicheng Molybdenum... properties and microstructure of molybdenum powder, sintering product and fabricated wires were studied. The molybdenum powder was produced firstly by reduction of molybdenum oxide which is doped......
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molybdenum concentrate: China patent, 200810230851.X[P]. 2010-09-29. [12] 戴永年. 二元合金相图集[M]. 北京: 科学出版社, 2009: 804. DAI Yong-nian. Binary alloy phase atlas[M]. Beijing: Science Press, 2009: 804. [13] 郭汉杰... process of molybdenum concentrate WANG Lei 1, 2, GUO Pei-min2, PANG Jian-ming2, ZHAO Pei2 (1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing......
improves with increasing Cr content. It is indicated that Cr addition can benefit pesting control in MoSi2. Key words: molybdenum silicides; pesting; oxidation; alloying ... et al[11] MoSi2 can dissolve not more than 2.6% (molar fraction) Cr corresponding to the formula (Mo0.92Cr0.08)Si2, since their alloy with composition (Mo0.90Cr0.10)Si2 showed some C40 reflections......
technique and their mechanical properties[J]. Mater Sci Eng A, 2005, 406(1/2): 50?56. [6] HIROAKI K, YUJI K, YUTAKA H, TAMAKI S, HIDEO K. Development of molybdenum alloy with high toughness at low..., HIRAOKA Y. Development of molybdenum alloy with high toughness at low temperatures[J]. Materials Transactions JIM, 1996, 37(1): 89?97. [14] KOBAYASHI S, TSUREKAWA S, WATANABE T. Roles of structure......
硫氰酸盐分光光度法测定电解稀土-镁中间合金中钼胡珊玲1,魏友利1,林燕1(1.江西省赣州市赣南师范学院化学与生命科学学院)摘 要:提出用硫氰酸盐分光光度法快速测定电解稀土-镁中间合金中杂质钼方法.取大样(2g)溶解于盐酸(1+1)和H2O2中,样品溶解完全并定容后,分取部分试液在1.0~1.8 mol/L硫酸介质中室温下显色,若室温低时加入Fe(Ⅲ)溶液加快显色反应.然后,在分光光度计460 nm波长处测定溶液的吸光度.Fe(Ⅲ)和W(Ⅵ)对钼的测定有干扰,但可分别用抗坏血酸和柠檬酸消除;基体元素稀土和镁以及其......
and molybdenum plasma spray coatings on Fe-28Mn-7Al-1C alloy [J]. Scripta Metall Mater, 1994, 31(7): 835. [9] Stolarski T A, Tobe S. The effect of spray distance on wear resistance of Mo coatings [J... Induction plasma spheroidization of tungsten and molybdenum powders JIANG Xian-Liang (蒋显亮)1, M.Boulos2 1. Institute of Surface and Coatings Technology, School of Materials Science and Engineering......
Guo-liang, DUAN Li-hui (School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China) Abstract: In vacuum environment, the dense fiber-structured molybdenum-copper (Mo-Cu) composites were fabricated by infiltrating liquid copper into molybdenum fibrous preform. By controlling the relative density of molybdenum fibrous preform, the composition of Mo-Cu......
[1,3]. For the Ni-Mo ore, the classical process for nickel and molybdenum recovery is roasting, melting and concentration to produce a high impurity nickel- molybdenum alloy. In the process, sulfur...Trans. Nonferrous Met. Soc. China 23(2013) 3083-3088 Extraction of molybdenum and nickel from Ni-Mo ore by pressure acid leaching Si-fu WANG1,2, Chang WEI1, Zhi-gan DENG1, Cun-xiong LI1, Xin-bing LI1......
