Behavior Analysis of Hydrogen-Induced Superabundant Vacancies in Electrodeposition of Metals and Its Application to Structural Control

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420743
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/Microstructural control engineering
• Research Institution: University of Hyogo
• Principal Investigator: Fukumuro Naoki 兵庫県立大学, 工学研究科, 准教授 (10347528)
• Co-Investigator(Renkei-kenkyūsha): FUKAI YUH 中央大学, 理工学部, 名誉教授 (80055136)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 金属電析 / 水素 / 空孔 / 拡散 / 組織制御 / 水素脆化 / 昇温脱離スペクトル / 透過電子顕微鏡

Outline of Final Research Achievements

The behaviors of hydrogen-induced superabundant vacancies in electrodeposited metals were analyzed and the application of hydrogen-induced effects to the structural control of functional alloy films was investigated. The room-temperature grain growth proceeded concurrently with hydrogen desorption in the electrodeposited Cu films of high hydrogen concentrations. For the electrodeposited Pt/Co and Ni/Cu diffusion couples, with the thermal desorption of hydrogen, the grain growth proceeded, while the alloy layers were not formed. The lattice contraction was observed in the electrodeposited metals of high hydrogen concentrations and the structures of carbon-vacancy-hydrogen clusters in the electrodeposited Fe-C alloy films were calculated from the changes in the lattice parameter and the concentrations of carbon and hydrogen. The behaviors and concentrations of hydrogen-induced superabundant vacancies were different for different metal species and depositing conditions.

Free Research Field

表面工学、電気化学