由於北投地區之溫泉屬多樣化及國人對溫泉的喜好，加速溫泉區
發展。大氣曝露試驗需要長時間進行觀測，而現場曝露試驗之初期腐
蝕行為研究是值得去探討的研究。本研究使用鋅、鋁、銅三種金屬材
料在鄰近溫泉區之惇敘高工和新民國中兩地特定含硫環境下進行曝
露試驗；分析其重量損失、表面腐蝕生成物分析。並用電化學極化法
測試其曝露試驗後之腐蝕電位差異。
鋅只會形成ZnS和ZnO單一價的化合物，腐蝕生成物單純。鋁只
有Al2O3，Al2O3為保護作用之氧化膜，並無硫化物之產生，鋁對於
硫有相當高的抗蝕性。銅之腐蝕生成物為Cu2S、CuS、Cu2O、CuO，
而於新民國中曝露試驗更有CuCl的產生，由CuCl的產生可以確認新
民國中之環境確實有含氯。從SEM觀察鋅、鋁、銅三種材料，腐蝕
生成物不是完整覆蓋於金屬表面。鋁之表面產生孔蝕逐漸變深變大，
如為構材有隱藏之危險存在。
In this study, zinc, aluminum and copper, three basic metallic materials,
according to the requirement of ISO as well as CNS, nearby the Beitou
hot springs were evaluated. Two locations were selected; they are
Dun-Xu Technical School and Xin-Min Junior High School, for the
accommodation of the exposure facilities, based on their chemical of
sulfur compounds and one location (Xin-Min Junior High School) even
contains HCl. Analysis of weight loss, electrochemical polarization and
surface analysis of the corrosion products were analyzed by XRD and
XPS. The corrosion products pf zinc and copper are mainly composed of
ZnS and ZnO for the zinc, and Cu2S, CuS, Cu2O and CuO for the copper;
CuCl and CuCl2 are also observed at the exposure site of Xin-Min Junior
High School. Aluminum only takes the oxide form of Al2O3 which is
usually protective; no sulfide was observed on aluminum. It may
conclude that aluminum is corrosion-resistant in sulfur containing
environments. Based on the results up to a 90 days study, it is by no
means a complete coverage of the corrosion products and continuously
grow at this stage of observation. It is necessary to further keep on the
track of the development of surface structure and chemistry of the
exposures in the two test sites.
