Effect of Recasting Procedure Upon Corrosion Behavior and Metallic Ion Release of Co-Cr-Mo Dental Alloy in Physiological Serum

被引：0
|
作者：
de Jesus Silva, Jose Wilson [1 ]
Baldissera, Silmara Cristina [1 ]
de Felipe, Hamilton [1 ]
Codaro, Eduardo Norberto [1 ]
机构：
[1] Sao Paulo State Univ, UNESP, Dept Chem & Phys, Guaratingueta, SP, Brazil
来源：
PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY | 2009年 / 46卷 / 07期
关键词：
IMPEDANCE SPECTROSCOPY; HEAT-TREATMENT; IN-VITRO; NI-CR; COBALT;
D O I：
10.3139/147.110024
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Recasting process influence upon corrosion behavior of Co-Cr-Mo dental alloy in simulated physiological serum has been investigated using chemical and electrochemical techniques. Recast Co-Cr-Mo alloy by induction (IND) or by blowtorch (FLAME) has exhibited similar dendritic structures. Both IND and FLAME alloys have presented good corrosion resistance in physiological serum. Passivation process provides this corrosion resistance. Codissolution makes this process difficult. Passive films, formed on these alloys, have been analyzed as a dual layer consisting of an inner barrier and an outer porous layer. Passive film protective characteristics are higher in FLAME than in IND alloy. On this last alloy, the passive film is more porous due to a higher Codissolution.
引用
收藏
页码：321 / 336
页数：16
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