Kai Wu
,
Jin-Yu Zhang
,
Gang Liu
,
Jiao Li
,
Guo-Jun Zhang
,
Jun Sun
金属学报(英文版)
doi:10.1007/s40195-016-0375-4
An approach based on film buckling under simple uniaxial tensile testing was utilized in this paper to quantitatively estimate the interfacial energy of the nanostructured multilayer films (NMFs) adherent to flexible substrates. The interfacial energies of polyimide-supported NMFs are determined to be ~5.0 J/m2 for Cu/Cr, ~4.1 J/m2 for Cu/Ta, ~2.8 J/m2 for Cu/Mo, ~1.1 J/m2 for Cu/Nb, and ~1.2 J/m2 for Cu/Zr NMFs. Furthermore, a linear relationship between the adhesion energy and the interfacial shear strength is clearly demonstrated for the Cu-based NMFs, which is highly indicative of the applicability and reliability of the modified models.
关键词:
niaxial
,
tensile
,
testing
,
Nanostructured
,
multilayer
,
films
,
Flexible
,
substrates
,
Buckling
,
behaviors
,
Adhesion
,
energy
Y. D. Liu
,
G. Wang
,
C.S. He
,
Y.D. Whng and J.Z. Xu (Department of Materials Science and Engineering
,
Northeastern University
,
Shenyang 110006
,
China)
金属学报(英文版)
In view of being difficult to find a non-oriented multilayer specimen, the precise defocusing correction become a particular obstacle of quantitative texture analyszs of the multzlayer. A new method is employed in this paper for comcting the eoperzment data. And a theoretical calculation for the defocus curre is proposed thinking about both thc dtherent film thickness and the penetration depth of the incident beam in the films. A critical value jor the defocusing cormction in the film is alsi cinsidered. This new tcchnique is applied to the Zn-Cu multilayer for which the quantitative texture analysis is completed by the modified maxitnum entropy tnethod.
关键词:
multilayer
,
null
,
null
谭俊
,
王猛
,
姜纵横
,
邵欢
,
宋皓
电镀与涂饰
采用单液法电刷镀制备200 μm厚的Ni/Co多层膜镀层.镀液配方和工艺为:NiSO4·7H2O 250 g/L,CoSO4·7H2O 17～50 g/L,H3BO3 35 g/L,NaC120 g/L,十二烷基硫酸钠0.1～ 0.5 g/L,pH 2.0 ～ 5.0,温度40 ～ 60℃.通过单因素试验确定镀液的CoSO4·7H2O与NiSO4·7H2O的质量浓度比为1∶10,镍、钴单层的沉积电压分别为9.0 V和3.5 V.通过对比不同厚度单层膜的Ni/Co多层膜镀层的表面形貌、元素组成、表面粗糙度、显微硬度和耐磨性能,分析单层膜厚度变化对Ni/Co多层膜镀层性能的影响,最终确定较优单层膜厚度为4 μm.所得Ni/Co多层膜镀层的显微硬度为496.8 HV,摩擦因数为0.42,耐磨性最好.
关键词:
镍
,
钴
,
多层膜
,
电刷镀
,
单液法
,
耐磨性
,
显微硬度
刘明霞
,
马飞
,
黄友兰
,
黄平
,
余花娃
,
张建民
,
徐可为
金属学报
使用磁控溅射法制备了不同调制波长的Ni/Al多层膜，利用X射线衍射（XRD）和高分辨显微技术（HRTEM）对薄膜进行了微结构表征，采用连续刚度法（CSM）研究了不同压入深度下多层膜的硬度。结果表明，随调制波长减小，薄膜呈纳米晶结构特征且存在超硬效应。调制波长L大于30 nm时，纳米压入硬度随压入深度的增加而升高；L小于30 nm时最大压入深度的硬度测量值反而最小。同时发现压入深度较小时硬度相对大小对调制波长不敏感。结合微结构表征，从晶界和膜界的竞比变形角度进行了分析讨论。
关键词:
多层膜
,
hardness
,
loading depth
,
modulated period
,
grain boundary
聂颖
,
任楚苏
,
周仕明
,
时钟
,
阎文盛
,
桑海
功能材料
doi:10.3969/j.issn.1001-9731.2014.22.021
在室温下用超高真空磁控溅射系统制备了一系列的Pt(4.0 nm)/[Co(0.5 nm)/Pt(0.3 nm)]3-FeMn(tAF nm)多层膜样品,研究了反铁磁层厚度对于易轴垂直于样品表面的Co/Pt/FeMn多层膜磁性质的影响。在室温下利用样品的剩磁进行了 X 射线磁圆二色测量(XMCD),结果表明在铁磁/反铁磁界面有反铁磁层铁锰的净磁矩,这些净磁矩仅来自于铁元素。铁的磁矩倾向于垂直于膜面排列。磁测量结果表明,随着铁锰层厚度的增加,交换偏置场H EB 增加直到饱和,而HC 先增加,然后轻微减少,在tAF>7.5 nm 以后,H EB 和H C 都几乎不变了。没有观察到磁锻炼效应。
关键词:
垂直各向异性
,
交换偏置
,
净磁矩
,
多层膜
孙勇
材料热处理学报
doi:10.3969/j.issn.1009-6264.2006.02.022
为了进一步提高超硬TiB2镀层与基体的结合力,采用磁空溅射法在高速钢表面上制备了多层相间的Ti/TiB2超硬镀层.利用多种实验方法测试和研究了镀层的组织结构,形貌,表面粗糙度,硬度和与基体的结合力.结果表明,镀层的Ti/TiB2相间层数对这些性能有很大的影响.当层数从二逐渐增加到十二,TiB2镀层的(001)织构逐渐消失而变成无择优取向,镀层表面粗糙度增加,但镀层硬度基本不变.只有当层数为十二时,镀层硬度才明显降低.结果也表明,多层镀层可有效地提高镀层与基体的结合力,并存在着一最佳的多层结合.本文也对多层结构对其它组织和性能特征的影响进行了分析.
关键词:
硼化钛
,
多层镀层
,
磁空溅射
,
硬度
,
结合力
