Effects of Amorphous and Nanocrystalline Structures on Hydrogen-Induced Optical Performance of Modulated Mg-Gd Films with Various Composition Fluctuations

被引：7

作者：

Deng, Nanxiang ^{[3
]}

Chen, Juan ^{[1
,2
]}

Peng, Li-Ming ^{[1
,2
]}

Liu, Yue ^{[3
]}

Chen, Yan ^{[3
]}

Lai, Tianxing ^{[4
]}

Ding, Wen-Jiang ^{[3
,5
]}

Zhu, Hong ^{[2
,6
]}

机构：

[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Ctr Hydrogen Sci, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Mat Genome Initiat Ctr, Shanghai 200240, Peoples R China

[3] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[5] Shanghai Jiao Tong Univ, Ctr Hydrogen Sci, Shanghai 200240, Peoples R China

[6] Shanghai Jiao Tong Univ, Univ Michigan Shanghai Jiao Tong Univ Joint Inst, Natl Engn Res Ctr Light Alloy Net Forming, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 26期

基金：

中国国家自然科学基金;

关键词：

Mg-Gd-modulated film; nanocrystalline; amorphous; magnetron co-sputtering; hydrogenation properties; THIN-FILMS; DEPOSITION; CRYSTALLINE; ABSORPTION; DIFFUSION; STORAGE;

D O I：

10.1021/acsami.0c04694

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanomodification and amorphization are vital for improving the hydrogenation properties of magnesium (Mg)-based alloys. However, comparisons of their positive effects have been rarely presented because their usual fabrication process of annealing is hard to control. In this study, after tuning the composition fluctuation range, self-assembled well-ordered multi-layer Mg0.7Gd0.3 films with an excessive amount of nanosized crystals were fabricated by deviating substrates to the edge of the sample stage, while relatively low crystallinity was gained at the center of the sample stage with a small composition fluctuation. It was demonstrated that the hydrogen diffusion rate in the sample deposited at the center with excessive amorphous regions was higher than that of the film fabricated at the edge with excessive nanocrystals regions. Besides, optical conversion ranges were monitored before and after the hydrogen absorption process. Films with large composition fluctuation possessed a high optical reflectance conversion range because the interference effects occurring inside improved their initial reflectance. However, films with small composition fluctuation inside gained a large transmittance conversion range due to their small nanostructured region.

引用

页码：29605 / 29613

页数：9

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