The effects of adding elements of zinc and magnesium on ag-cu eutectic alloy for warming acupuncture.
The warming acupuncture for hyperthermia therapy is made of STS304. However, its needle point cannot be reached to a desirable temperature due to heat loss caused by low thermal conductivity, and the quantification of stimulation condition and the effective standard establishment of warming acupuncture are required as a heat source. Accordingly, in this study, after Ag-Cu alloys with different composition ratios were casted and then mixed with additives to improve their physical and mechanical properties, the thermal conductivity and biocompatibility of the alloy specimens were evaluated for selecting suitable material. Ag-Cu binary alloys and ternary alloys added 5 wt% Zn or 2 wt% Mg were casted and then cold drawn to manufacture needles for acupuncture, and their physical properties, thermal conductivity, and biocompatibility were evaluated for their potential use in warming acupuncture. The results of this study showed that the physical and mechanical properties of the Ag-Cu alloys were improved by additives and that the thermal conductivity, machinability, and biocompatibility of the Ag-Cu alloys were improved by Mg addition.
Department of Dental Biomaterials, School of Dentistry, Institute of Oral Bioscience, Chonbuk National University, BK 21 Project, Jeonju 561-756, Republic of Korea ; Technical Research Center, Dong Bang Acupuncture, Inc., Boryeong 355-851, Republic of Korea.
Yu Kyoung
YK
Kim
Il Song
IS
Park
Keun Sik
KS
Kim
Min Ho
MH
Lee