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습식전해증착법을 이용한 기능성 Ni-W합금 합성 및 특성 분석에 관한 연구

Title
습식전해증착법을 이용한 기능성 Ni-W합금 합성 및 특성 분석에 관한 연구
Other Titles
A study on synthesis and analysis of functional Nickel tungsten alloy by electrodeposition
Author
이상현
Alternative Author(s)
Lee, Sang Hyeon
Advisor(s)
유봉영
Issue Date
2015-02
Publisher
한양대학교
Degree
Master
Abstract
The interest in nickel-tungsten alloys has increased in recent years from many coating technology researcher due to their superior properties, such as high tensile strength, premium hardness, abrasion resistance, good resistance to acids, and high melting temperature. However, nickel-tungsten alloys have some problems, for example, current efficiency is too low due to hydrogen evolution reaction (HER) during electrodeposition process and electrodeposited nickel-tungsten has continuous crack on surface because of high internal stress. Internal stress is induced from difference between volume of nickel atom and tungsten atom. Because of these reasons, using nickel-tungsten in the industry has a difficulty. In here, this thesis is classified into two themes. In the first session “Electro-deposition of Nickel-Tungsten thin film”, purpose of study is synthesis of nickel-tungsten thin film without crack. Nickel tungsten alloys were synthesized by induced coelectrodeposition method. After nickel tungsten alloys were tailored and patterned with tungsten contents by alternative current density. In the second session “Synthesis of nickel tungsten micro flake using sonoelectochemistry”, Nickel tungsten micro flakes were synthesized by property of nickel tungsten high internal stress. Nickel tungsten micro flakes were synthesized by electrodeposition and ultra-radiation.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/129040http://hanyang.dcollection.net/common/orgView/200000426347
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > MATERIALS ENGINEERING(재료공학과) > Theses (Master)
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