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退火对层状复合Ni-Al双金属带界面化合物和性能的影响 余琨,宋觉敏,陈福文,谭欣,胡亚男,李少君 (中南大学 材料科学与工程学院,湖南 长沙,410083) 摘要:层状复合Ni-Al双金属带作为连接材料被广泛应用于锂离子电池中,该复合带需要2层金属间具有良好的结合性能,这与结合界面上的金属间化合物的形成及其性质有很大的关系.研究不同退火温度时Ni-Al双金属层状复合带的复合界面上金属间化合物的生长情况及力学性能.研究结果表明:当达到一定的热力学条件后,金属间化合物首先在界面局部区域生成并迅速完成长大,新生的化合物主要有NiAl3和Ni2Al3,这些相沿界面呈层状分布,并且随温度升高而变厚.但过高的扩散温度会使复合界面上生成较厚的脆性化合物.制备组织和性能较好的Ni-Al双金属层状复合带最佳工艺为:退火温度420 ℃,退火时间3 h. 关键词:Ni-Al复合带;退火;界面化合物......
; 文献标识码: A Phase formation regularities of Ni-Al alloy nano powders prepared by vapor deposition GAO Wei-li, YAN Hong-ge, SHENG Shao-ding, CHEN Zhen-hua (School of Materials Science and Engineering, Hunan University, Changsha 410082, China) Abstract: Ni-Al alloy nanometer powders were prepared by vapor......
: intermetallic compound; Fe-Al alloy; Ti-Al alloy; Ni-Al alloy; porous material; corrosion resistance property 多孔材料是指具有一定尺寸和数量孔隙结构的材料,通常孔隙率较大,孔隙结构作为有用的结构存 在[1].多孔材料种类繁多,按化学成分和孔径尺寸进行分类是目前常用的两种分... phase diagram of Ni-Al alloy NiAl晶体结构为类似于体心立方的B2结构,如图7所示.Ni原子占据顶角位置,Al原子占据立方体中心.其晶格点阵常数与合金成分及温度有关,室温下化学计量比NiAl合金其晶格点阵常数为0.288 7 nm.NiAl是一种β相电子化合物,其共价电子和原子的比为3/2,键合方式为金属键和共价键混合型[20]. 图7 NiAl的晶体......
in Ni-Al diffusion couple prepared by electrodeposition of Ni on Al substrate were investigated. The nickel coating with 20 μm thickness was applied on 6061 aluminum alloy by direct current... of Al3Ni and Al3Ni2 phases are lower than the values presented in other researches. 4 Conclusions 1) Heat treatment of Ni-coated Al alloy at suitable time and temperature resulted in the formation......
色金属学报, 2006, 16(2): 339-345.GAO Wei-li, YAN Hong-ge, SHENG Shao-ding, CHEN Zhen-hua. Phase formation regularities of Ni-Al alloy nano powders prepared by vapor deposition[J]. The Chinese Journal...文章编号:1004-0609(2010)08-1552-06 Ni-Al固/液扩散偶的组织结构演变及其形成机理 蒋淑英,李世春 (中国石油大学(华东) 机电工程学院,东营 257061) 摘 要:采用镶嵌式扩散偶技术制备Ni-Al扩散偶,在Al熔点和Ni熔点之间的不同温度保温不同时间进行扩散处理.研究Ni-Al固/液扩散偶的组织结构演变及形成机理.结果表明:在Ni基被完全消耗......
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shape memory alloy [J]. Intermetallics, 2010, 18: 123-128. [20] MORSI K. Review: Reaction synthesis processing of Ni-Al intermetallic materials [J]. Materials Science and Engineering A, 2001, 299(1-2...Trans. Nonferrous Met. Soc. China 23(2013) 1639-1645 Microstructure and formation mechanism of Ni-Al intermetallic compounds fabricated by reaction synthesis Hong-zhi CUI, Na WEI, Liang-liang ZENG......
; 文献标志码:A Microstructure and properties of Ni/Al/ceramic coatings plasma-sprayed on AZ91D magnesium alloy CHEN Yan1, LU Sheng1, CHEN Jing2, DUAN Zhen-zhen1 (1. School...% TiO2 (Ni-Al/Al2O3/AT13/AT20) gradient coating were fabricated on the AZ91D magnesium alloy with Ni-Al as the base coating. The microstructure characteristics of the coatings were investigated......
Zr,Ti,Hf,Nb对NiAl非晶合金形成的亚规则模型王丹1,廖树帜1,陈佳1,谢斌1,谢浩文1,张邦维2(1.低维量子结构与调控教育部重点实验室,湖南师范大学 物理系,长沙 4100812.湖南大学 应用物理系,长沙 410082)摘 要:将亚规则模型应用于Zr,Ti,Hf,Nb对NiAl合金的非晶形成能力的影响研究,发现Zr,Hf的影响要大于Ti,Nb,其原因在于Zr,Hf与Ni,Al的原子尺寸差异要大于Ti,Nb与Ni,Al间的原子尺寸差异.关键词:亚规则模型; Ni-Al基非晶合金; 形成能力; 影响因素......