Kim Min-Su, Choi Su-Young, Nam Tae-Hyun
Dongnam Technology Service Division, Korea Institute of Industrial Technology, Busan 46744, Republic of Korea.
Department of Materials Engineering and Convergence Technology and RIGET, Gyeongsang National University, 900 Gazwadong, Jinju, Gyeongnam 52828, Republic of Korea.
J Nanosci Nanotechnol. 2020 Nov 1;20(11):6839-6843. doi: 10.1166/jnn.2020.18786.
Electrochemical anodization of Ti-Ni alloys with different Ni composition was carried out in an ethylene glycol base electrolyte under the various conditions to investigate the effect of crystal structure and chemical composition of the Ti-Ni alloy. X-ray diffraction patterns indicated that Ti-48.0 Ni and Ti-49.0Ni alloys were the martensitic phase at room temperature, while Ti 50.6Ni and 51.0Ni were the austenitic phase. Self-organized nanotubular oxide layers were formed on four Ti-Ni alloys. The thickness of oxide layers increased with increasing anodization time and applied voltages. Energy-dispersive X-ray analysis indicated that the nanotubular oxide layers consist of two kinds of oxides, one of which is Titanium oxide and the other is Nickel oxide. These results indicate that the growth of nanotubular oxide layer formed Ti-Ni alloys are not affected by crystal structure, but by applied voltage and anodization time.
在乙二醇基电解液中，在不同条件下对不同镍成分的钛镍合金进行电化学阳极氧化，以研究钛镍合金的晶体结构和化学成分的影响。X射线衍射图谱表明，Ti-48.0Ni和Ti-49.0Ni合金在室温下为马氏体相，而Ti 50.6Ni和51.0Ni为奥氏体相。在四种钛镍合金上形成了自组织纳米管氧化层。氧化层的厚度随着阳极氧化时间和施加电压的增加而增加。能量色散X射线分析表明，纳米管氧化层由两种氧化物组成，一种是氧化钛，另一种是氧化镍。这些结果表明，钛镍合金形成的纳米管氧化层的生长不受晶体结构的影响，而是受施加电压和阳极氧化时间的影响。
