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Trans. Nonferrous Met. Soc. China 28(2018) 348-355 Adsorption behavior and mechanism of Bi(III) ions on rutile-water interface in the presence of nonyl hydroxamic acid Wei XIAO1,2, Pan CAO1,2, Qian...: The adsorption behavior and mechanism of Bi(III) ions on the rutile-water interface were investigated through micro-flotation, Zeta potential measurement, adsorption amount measurement and X-ray photoelectron......
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and the final strength of the Al-6Bi-8Zn alloy were discussed. Key words: Al alloys; equal channel angular pressing (ECAP); Bi particle; grain refinement; hardness 1 Introduction Alloys with a miscibility gap...) EBSD maps of Al-6Bi-8Zn alloy at different states After 1 pass of ECAP, large Bi particles inside of the original grains were elongated. Lots of boundaries emerged adjacent to the Bi particle......
. With the increase of Bi content, the morphology of primary Mg2Si particle changes from dendritic to polygonal shape, and its size decreases from ~70 to 6 μm. Moreover, the morphology of the eutectic Mg2Si phase...Trans. Nonferrous Met. Soc. China 23(2013) 1532-1542 Influence of Bi addition on microstructure and dry sliding wear behaviors of cast Al-Mg2Si metal matrix composite Xiao-feng WU, Guang-an ZHANG, Fu......
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影响.研究结果表明:采用化学沉淀法制备纳米氧化铋粉体时在Bi(NO3)3质量浓度为300 g/L, 油酸和十二烷基硫酸钠作表面活性剂, 反应温度为90 ℃,反应时间为2 h时,产率达99%,产物为α-Bi2O3,纯度达99.5%;颗粒均匀,呈球形,分散性很好,平均粒径约为60 nm. 关键词: 纳米氧化铋; 沉淀法; 单分散 中图分类号:TB34; TB39 文献标识码:A 文章编号.... 硝酸铋易水解,生成硝酸氧铋,在水溶液中硝酸氧铋易发生转化反应,生成比其溶解度更低的氢氧化铋.控制温度和碱液浓度,氢氧化铋可发生脱水缩聚反应生成氧化铋[11]:Bi(OH)3-nn→…→Bi(OH)3→Bi(OH)+2→Bi(OH)2+→Bi2O3. 1.4 检测方法 用化学分析法测定产物纯度;用X射线衍射仪(日本制造的Rigaku Dmax衍射仪)测定产物物相;用H-800......
DOI: 10.11817/j.issn.1672-7207.2016.08.007 Cl-助萃作用下N235萃取脱除铜电解液中锑铋 黄茜琳1,李亮星1,廖春发2,黄金堤1,童长仁2 (1. 江西理工大学 建筑与资源工程系,江西 南昌,330013; 2. 江西理工大学 冶金与化学工程学院,江西 赣州,341000) 摘要:采用溶剂萃取法脱除铜电解液中的杂质,通过在铜电解液中加入助萃剂研究萃取剂N235对Sb和Bi的萃取性能.考察N235体积分数,助萃剂浓度,有机相与水相的体积比(相比),萃取时间等因素对Sb和Bi萃取率的影响.研究结果表明:在有机相组成(体积分数)为20%N235+10%异辛醇+70%磺化煤油,助萃剂浓度为0.1 mol/L,相比为1:1时,铜电解液经单级萃取,Sb和Bi的萃取率(质量分数)分别为56.1%和96.6%.在有机相组成和助萃剂浓度保持不变的情况......
.粒状金属铋和Cu3P只在富磷α相内生成,其分布,形态,数量和大小与富磷α相成分有关.铸态下,该合金的屈服强度为148 MPa,抗拉强度为300 MPa,断后伸长率为36.5%,硬度为70.5 HBW,抗压强度为146 MPa,夏比冲击吸收能量为28 J.常温冲击断口呈韧窝状,具有良好的切削加工性能. 关键词:C89320无铅铋青铜;Bi;Cu3P;富磷α相;力学性能 中图分类号:TG146.1... techniques. The results show that when the C89320 is fabricated by continuous casting process, the microstructure mainly contains α phase, phosphorus-rich α phase, particle-like Bi and Cu3P phases. Bi......
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铋黄铜及其加工工艺研究唐生渝,李文兵,闫静,赵桢,沈保罗摘 要:在传统两相黄铜的基础上,加入 Bi 取代 Pb,成功地研制出了无铅易切削黄铜--铋黄铜,并确定了合理的合金成分和加工工艺.利用 Pb 黄铜的加工设备和类似的生产工艺,成功地生产出了铋黄铜热轧材,挤压材和拉拔线材,其表面质量,切削性能及机械性能都达到或超过了铅黄铜的性能指标.关键词:Bi 黄铜;合金成分;加工工艺;......