[钴铬、镍铬、镍铬钛合金在人工唾液中的耐腐蚀性]

[Corrosion resistance of Co-Cr, Ni-Cr, Ni-Cr-Ti alloy in artificial saliva].

作者信息

Sun Ping, Lu Ying, Chen Song

机构信息

Affiliated Stomatological Hospital, College of Medical Science, Zhejiang University, Hangzhou 310006, Zhejiang Province, China.

出版信息

Shanghai Kou Qiang Yi Xue. 2007 Dec;16(6):652-6.

PMID:18278423

Abstract

PURPOSE

To evaluate the corrosion resistance of Co-Cr, Ni-Cr and Ni-Cr-Ti alloy in artificial saliva.

METHODS

Electrochemical methods were used to measure the self-corrosion potential (Ecorr), self-corrosion current density (Icorr) and polarization resistance (Rp) of three alloys .And the polarization curves of the three alloys were recorded too. One-way ANOVA with SPSS 11.0 software package was used for statistical analysis.

RESULTS

The Icorr of Co-Cr alloy was significantly lower than that of Ni-Cr alloy (P<0.05) and Ni-Cr-Ti alloy (P<0.05). The Icorr of Ni-Cr-Ti alloy was significantly lower than that of Ni-Cr alloy (P<0.05). The Rp of Co-Cr alloy was significantly higher than that of Ni-Cr alloy (P<0.05) and Ni-Cr-Ti alloy (P<0.05). The Rp of Ni-Cr-Ti alloy was significantly higher than that of Ni-Cr alloy(P<0.05). The Ecorr of Co-Cr alloy was significantly higher than that of Ni-Cr alloy (P<0.05) and Ni-Cr-Ti alloy (P<0.05).The Ecorr of Ni-Cr-Ti alloy was higher than that of Ni-Cr alloy but without significant difference(P>0.05).

CONCLUSIONS

The corrosion resistance of Co-Cr alloy is better than that of Ni-Cr and Ni-Cr-Ti alloy. The corrosion resistance of Ni-Cr-Ti alloy is worse than that of Ni-Cr alloy.

摘要

目的

评估钴铬合金、镍铬合金和镍铬钛合金在人工唾液中的耐腐蚀性。

方法

采用电化学方法测量三种合金的自腐蚀电位（Ecorr）、自腐蚀电流密度（Icorr）和极化电阻（Rp），并记录三种合金的极化曲线。使用SPSS 11.0软件包进行单因素方差分析以进行统计分析。

结果

钴铬合金的Icorr显著低于镍铬合金（P<0.05）和镍铬钛合金（P<0.05）。镍铬钛合金的Icorr显著低于镍铬合金（P<0.05）。钴铬合金的Rp显著高于镍铬合金（P<0.05）和镍铬钛合金（P<0.05）。镍铬钛合金的Rp显著高于镍铬合金（P<0.05）。钴铬合金的Ecorr显著高于镍铬合金（P<0.05）和镍铬钛合金（P<0.05）。镍铬钛合金的Ecorr高于镍铬合金，但无显著差异（P>0.05）。