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The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
Grain Refinement of Aluminium by Master Alloy AlTi6C1冯庆玲摘 要:<正> For the grain refinement of super pure aluminium and commercial pure aluminium,Al-Ti-C master al-loy is better than Al-Ti alloy.It was shown by scanning electron microscope(SEM)and electron-probe mi-croanalyser(EPMA)that when the amount of titanium added is less than 0.15%,grain......
后热处理对搅拌摩擦加工制备Al-Ti复合材料组织特征的影响黄硕文,黄春平,吴中文,夏春,刘奋成,柯黎明摘 要:采用搅拌摩擦加工技术制备Al-Ti复合材料,并对其进行600℃/6h的后热处理,采用SEM,TEM,XRD对搅拌摩擦区热处理前后的微观组织结构及相进行了分析;采用X射线衍射图分析软件TOPAS测量了搅拌区热处理前后的物相晶格常数,研究了后热处理对搅拌摩擦加工制备的Al-Ti复合材料组织特征的影响.结果表明:600℃/6h后热处理后,金属间化合物与铝基结合界面良好;且后热处理可使Ti,Al和Al3Ti彼此间的扩散速率加快,促进Al3Ti和新相Al5Ti2金属间化合物的产生;此外微观结构中存在位错墙;热处理前后Al3Ti的轴向比c/a都高于标准数据,但热处理后提高了约0.4%,明显低于热处理前约......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
[100]取向Al-Ti共掺杂ZnO薄膜的制备与光电性能研究 江民红1,刘心宇1 (1.桂林电子科技大学信息材料科学与工程系,桂林541004;2.中南大学材料科学与工程学院,长沙410083) 摘要:采用常压固相烧结法制备了Al-Ti共掺ZnO靶材,采用射频磁控溅射技术及真空退火工艺,在普通玻璃衬底上制备了具有[100]取向Al-Ti共掺杂ZnO薄膜(ZATO).采用X射线衍射(XRD...70%,表现为一般的透过性;而电阻率则从1.89×10-2Ω·cm降至1.25×10-3Ω·cm,呈现较好的导电性.薄膜中均出现了380nm附近的带边发射(NBE)峰以及410,564nm的深能级发射峰,且经500℃保温3h退火后,这些峰的位置并未改变,但峰强均明显减弱.对上述实验机理进行了分析讨论. 关键词:ZnO薄膜; Ti-Al共掺杂; [100]取向; 光电性能; [全文内容正在添加中] ......
Microstructure and synthesis mechanism of Al-Ti-C-Sr master alloy ZHAO Hong-liang(赵红亮), WANG Jun(王 军), SONG Yong(宋 勇), GUAN Shao-kang(关绍康) School of Materials Science and Engineering, Zhengzhou... is composed of α(Al), TiAl3, TiC, Al4Sr and Al-Ti-Sr phases. The synthesis mechanisms of the master alloy are as follows: TiAl3 is formed through the reaction between K2TiF6 and Al melt at 850 ℃; when the melt......
Vibration Effects on the Structural Stability of Al-Ti Intermetallics by First-principles CalculationsHui Zhang and Shaoqing Wang Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China摘 要:The structural stability of the intermetallics AlTi3,Al2Ti,Al3Ti4 and Al3Ti in the Al-Ti......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
Alloy 20不锈钢薄板等离子弧焊接工艺研究赵斌,王宾宾,王小华中国船舶重工集团公司第七二五研究所摘 要:对Alloy 20不锈钢薄板进行了等离子弧焊接工艺试验研究.结果表明,采用等离子弧焊接方法,ERCr Ni Mo-3焊材及合理的焊接工艺参数,等离子弧焊接工艺可用于Alloy 20不锈钢薄板的焊接,焊接接头各项性能均能满足要求.关键词:Alloy 20;不锈钢薄板;等离子弧焊接;......
铝电解电容器用高介电常数复合氧化膜的制备 郭洪蕾1,陈金菊1,杨邦朝1,冯哲圣1 (1.电子科技大学,微电子与固体电子学院,成都,610054) 摘要:用水解沉积-阳极氧化法制备高介电常数的Al-Ti复合氧化膜,通过XPS分析Al-Ti复合氧化膜的成分及各元素的相对含量.监测铝电极箔恒电流阳极氧化过程中的升压曲线,对复合氧化膜的介电常数进行理论计算,并测试铝电解电容器的容量及耐久性.结果表明:铝电极箔在含钛无机盐溶液中的最佳处理时间为10min,处理后的铝电极箔阳极氧化速率高于纯铝电极箔,Al-Ti复合氧化膜中的高介电常数相为TiO2.对16V/1000μF规格的铝电解电容器,形成Al-Ti复合氧化膜的样品,容量提高率为23%,且耐久性良好,复合氧化膜介电常数的理论计算值与实验结果较为一致. 关键词:铝电极箔; 水解沉积; 阳极氧化; 高介电常数; Al-Ti复合氧化膜......