DETERMINATION OF THE CORROSION RATES OF 6 DENTAL NICRMO ALLOYS IN AN ARTIFICIAL SALIVA BY CHEMICAL-ANALYSIS OF THE MEDIUM USING ICP-AES

被引：32

作者：

MULLER, AWJ ^{[1
]}

MAESSEN, FJMJ ^{[1
]}

DAVIDSON, CL ^{[1
]}

机构：

[1] UNIV AMSTERDAM,DEPT DENT MAT SCI,1066 EA AMSTERDAM,NETHERLANDS

来源：

DENTAL MATERIALS | 1990年 / 6卷 / 01期

关键词：

D O I：

10.1016/0109-5641(90)90048-J

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

So that the influence of salivary components upon the corrosion rate of six dental NiCrMo alloys could be established, their mass loss was determined in a medium consisting of a modified Fusayama's artificial saliva to which 300 mg KSCN/L had been added (pH 5.0). Nickel was the main element released; its loss vs. immersion time curves on a log-log plot resembled straight lines. The total nickel losses after one week ranged from 0.4 to 12.5 μg/cm2. From the nickel loss, corrosion currents were calculated. The corrosion currents at 24 hours of immersion were up to 67% larger than the currents in a previous study of these alloys, where the medium consisted of a 20 mM KCl-5 mM phosphate buffer solution (pH 7). The alloys with the least molybdenum content showed the largest corrosion current increase. © 1990.

引用

页码：63 / 68

页数：6

共 8 条

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