1. Fabrication and characteristics of highly ⟨110⟩-oriented nanotwinned Au films.
- Author
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Chiu, Wei-Lan, Liu, Chien-Min, Lin, Han-wen, Wu, John A., Chou, Y.-C., Tu, K. N., and Chen, Chih
- Subjects
- *
ELECTRONIC equipment , *ALUMINUM films , *MICROSTRUCTURE , *FABRICATION (Manufacturing) , *HARDNESS testing - Abstract
Fine grained and nanotwinned Au has many excellent properties and is widely used in electronic devices. We have fabricated ⟨ 110 ⟩ preferred-oriented Au thin films by DC plating at 5 mA/cm2. Microstructure analysis of the films show a unique fine grain structure with a twin formation. Hardness tests performed on electroplated ⟨ 110 ⟩ Au films show a hardness 47% greater than random and untwinned Au. We then achieved direct bonding between two Au ⟨ 110 ⟩ surfaces operating at 200 °C for an hour in a vacuum oven. The highly-oriented ⟨ 110 ⟩ nanotwinned Au films could be an ideal material in many gold products. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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