Influence of the surface etching on the corrosion behaviour of a three-dimensional printed Ti-6Al-4V alloy

被引：6

作者：

Fojt, Jaroslav ^{[1
]}

Kacenka, Zdenek ^{[1
]}

Jablonska, Eva ^{[2
]}

Hybasek, Vojtech ^{[1
]}

Pruchova, Eva ^{[1
]}

机构：

[1] Univ Chem & Technol, Dept Met & Corros Engn, Tech 5, Prague 16628, Czech Republic

[2] Univ Chem & Technol, Dept Biochem & Microbiol, Prague, Czech Republic

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2020年 / 71卷 / 10期

关键词：

additive manufacturing; corrosion; cytotoxicity; surface etching; titanium alloy; FORMATION MECHANISM; TITANIUM; DISTINCTION; RESISTANCE; SCAFFOLDS; FLUORIDE;

D O I：

10.1002/maco.202011658

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently, there has been an extension of three-dimensional (3D) printing technology of metal materials in the medical field. Additive technology has made it possible to manufacture customized implants. However, 3D printing products often require surface treatment. The possible treatments include acid etching. This study investigated the effect of surface etching on the corrosion resistance of Ti-6Al-4V alloy concerning biological applications. The samples were etched in a mixture of hydrofluoric acid and nitric acid. The corrosion behaviour was described by measuring the time dependence of polarization resistance in a saline solution and surface analysis. The results showed that etching creates a fluoride-rich layer on the surface, which negatively affects the corrosion behaviour of the material for up to 24 hr. Cytocompatibility tests showed that the resulting layer does not affect the biocompatibility of the material.

引用

页码：1691 / 1696

页数：6

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