Thermochemical laser etching of stainless steel and titanium in liquids

被引：48

作者：

Nowak, R

Metev, S

机构：

[1] BIAS, Bremen Inst. of Appl. Beam Technol., D-28359 Bremen

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1996年 / 63卷 / 02期

关键词：

D O I：

10.1007/BF01567640

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser-induced wet chemical etching of stainless steel 304 and Ti in phosphoric acid, sulfuric acid and aqueous KOH has been investigated using cw Ar and cw Nd:YAG lasers. Two different phases of laser-induced etching of Ti in phosphoric acid were found by electrochemical investigations. Laser-enhanced electrochemical dissolution of stainless steel was observed in the passivation and transpassivation region. In the latter case, laser heating accelerates the metal dissolution. In the passivation region, laser heating results in a breakthrough of the passivation layer near the Flade potential. By multiple scanning microstructures of high quality and an aspect ratio > 10 have been produced. By EDX analysis the laser-etching process was found to be practically free of chemical residues on etched surfaces.

引用

页码：133 / 138

页数：6

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