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A1-Ti-C细化剂组织及细化效果王正军1(1.江苏省宿迁市宿迁学院)摘 要:采用铝热还原法工艺制备AlTiC中间合金,用X射线及扫描电镜(SEM)等手段分析AlTiC中间合金的成分,组成和形貌.利用自行研制的AlTiC中间合金工业纯铝进行细化,借助于光学显微镜(OM)等手段对其晶粒细化效果进行分析对比.结果表明,AlTiC中间合金对工业纯铝的细化效果优于某国产的AlTiB中间合金.关键词:金属材料； AlTiC中间合金； 晶粒细化； 工业纯铝； 细化机理......
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International, 2009, 42: 59-65. [3] PRASADA RAO A K, DAS K, MURTY B S, CHAKRABORTY M. Al-Ti-C-Sr master alloy-A melt inoculant for simultaneous grain refinement and modification of hypoeutectic Al-Si alloys...-hong, QI Wen-jun. Grain refinement mechanism of Al-5Ti-1B master alloy on aluminum alloy[J]. Material Review B: Research, 2014, 28(1): 123-126. [5] YCEL B. Production of Al-Ti-B grain refning master......
Al-Ce柱撑膨润土的制备研究张文娟,马莹,郝一凡,候少春,赵永志摘 要:以内蒙某地的钙基膨润土为原料,对其进行特性分析,钠化改型,再以改型膨润土为基质,采用常规水相合成法制备了蒙脱石层间Al-Ce柱撑化合物.借助X射线衍射分析(XRD),氮气吸附及扫描电镜(SEM)等分析手段,考察了Al/Ce摩尔比,柱撑剂反应温度,柱撑反应时间和柱撑化合物洗涤次数对柱撑膨润土在层间距(d001),比表面积(BET)等性能方面的影响行为.结果表明,当n(Al)∶n(Ce)=5∶1,柱撑剂反应温度40℃,柱撑反应时间5 h,柱撑膨润土洗涤5次时,500℃煅烧后Al-Ce柱撑膨润土的层间距稳定在1.847 nm,比表面积达307.2 m2/g,具有较好的热稳定性,可作为高性能柱撑膨润土加以应用.关键词:钠化......
Table 1 Chemical composition of AZ91D magnesium alloy (mass fraction, %) 表2 Mg-Nd中间合金的化学成分 Table 2 Chemical composition of Mg-Nd master alloy (mass fraction, %) Mg-Nd中间合金是常用的稀土中间合金,其铸态... of Science and Technology, Harbin 150040, China) Abstract: AZ91D alloy chips and Mg-Nd master alloy chips were fabricated by multi-pass solid phase synthesis. The homogenization and breaking mechanism......
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......
Trans. Nonferrous Met. Soc. China 27(2017) 305-311 Microstructure evolution of Al-Sr master alloy during continuous extrusion Sheng BI1, Xin-bing YUN1, Jiu-yang PEI1, Ying ZHAO1, Zhi-yong YAN2, Xu... Received 2 December 2015; accepted 13 June 2016 Abstract: The microstructure evolution of Al–Sr master alloy during continuous extrusion was investigated using X-ray diffractometer, scanning electron......
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alloy were observed using XRD and TEM. The results show that addition of certain amount Al-P master alloy into AZ91 containing 0.7% Si alloys leads to morphology change of Mg2Si phase from Chinese script... to discontinuous nets. Consequently, the mechanical properties of AZ91 containing 0.7% Si alloys are improved dramatically. It indicates that the Al-P master alloy has excellent modifying......
