TY - JOUR
T1 - Corrosion properties of soldered joints. Part I
T2 - Electrochemical action of dental solder and dental nickel-chromium alloy
AU - Shigeto, Naofumi
AU - Yanagihara, Toshiyuki
AU - Hamada, Taizo
AU - Budtz-Jørgensen, Ejvind
PY - 1989/11
Y1 - 1989/11
N2 - The corrosion properties of contact between six Ni-Cr alloys and two dental solders were evaluated. Ni-Cr alloys with low Cr content coupled with silver solder induced continuous galvanic current, whereas Ni-Cr alloys with high Cr and some Mo content coupled with silver or gold solder induced galvanic current for a short time. Six Ni-Cr alloys were divided into two groups according to the dissolution of Ni, one low-resistance and the other high-resistance. The initial equilibrium was induced between high-resistance Ni-Cr alloys and both solders by less current density, which implies a smaller degree of corrosive current than that in low-resistance alloys. Corrosion was observed in the silver solder coupled with high-resistance Ni-Cr alloy, but was not found in the gold solder coupled with both alloys. In soldering Ni-Cr alloy it is better to use a gold solder and a high-resistance Ni-Cr alloy for corrosion resistance.
AB - The corrosion properties of contact between six Ni-Cr alloys and two dental solders were evaluated. Ni-Cr alloys with low Cr content coupled with silver solder induced continuous galvanic current, whereas Ni-Cr alloys with high Cr and some Mo content coupled with silver or gold solder induced galvanic current for a short time. Six Ni-Cr alloys were divided into two groups according to the dissolution of Ni, one low-resistance and the other high-resistance. The initial equilibrium was induced between high-resistance Ni-Cr alloys and both solders by less current density, which implies a smaller degree of corrosive current than that in low-resistance alloys. Corrosion was observed in the silver solder coupled with high-resistance Ni-Cr alloy, but was not found in the gold solder coupled with both alloys. In soldering Ni-Cr alloy it is better to use a gold solder and a high-resistance Ni-Cr alloy for corrosion resistance.
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U2 - 10.1016/0022-3913(89)90069-3
DO - 10.1016/0022-3913(89)90069-3
M3 - Article
C2 - 2575168
AN - SCOPUS:0024758622
VL - 62
SP - 512
EP - 515
JO - Journal of Prosthetic Dentistry
JF - Journal of Prosthetic Dentistry
SN - 0022-3913
IS - 5
ER -