著者

蒲地 一嘉

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

vol.46, no.4, pp.401-406, 1982 (Released:2008-04-04)

参考文献数

5

被引用文献数

1

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Since austenitic stainless steels have some useful properties for medical instruments, such as high corrosion resistance, high strength and high elasticity, they are used as needles for acupancture and anesthesia. The failure of the needles, however, have been reported to occur during medical treatments. This becomes a serious problem for both a doctor and a patient.Causes of the failure have been studied in the present paper and the following conclusion has been derived; In case in which the needle is used as an anode, the failure occurs due to pitting corrosion, whereas, in case in which it is used as a cathode, embrittlement due to hydride formation occurs.