著者

Abe Hiroya Sato Kazuyoshi Nishikawa Hiroshi Takemoto Tadashi Fukuhara Mikio Inoue Akihisa

出版者

公益社団法人 日本金属学会

雑誌

MATERIALS TRANSACTIONS

巻号頁・発行日

vol.50, no.6, pp.1255-1258, 2009

被引用文献数

34

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The dealloying behavior of Cu<SUB>60</SUB>Zr<SUB>30</SUB>Ti<SUB>10</SUB> metallic glass was investigated under free corrosion conditions using hydrofluoric acid (HF) solutions at room temperature. After immersing in HF solutions with various concentrations (0.05, 0.1, 0.5 and 1 M) for 300 s, color of all samples changed to be pinkish or peachy, which was ascribed to Cu based on the XRD patterns. According to the SEM-EDS study, HF immersion selectively leached the Zr and Ti elements, leaving Cu behind. Increasing the HF concentration increased the dealloying rate. Moreover, the HF concentration strongly influenced the surface morphology of the resulting Cu.