In this paper, a generated method of 2-D binary phase grating by chemistry etching is presented.

A simple chemical etching method was developed for fabricating the super-hydrophobic surface on polycrystalline aluminum alloy.

By using effective chemical etching and scavenging system(HNO 3+NaOH) and the optimized experimental parameters, such as the etching time, etching current density, concentration of etchant or scavenger, the etched patterns were obtained, which is close to negative copy of the mold.

In this work,the techniques of the electrochemical etching and the chemical etching have been developed for the titanium surface modification.

An easy-to-perform chemical etch method with a good repeatability was studies based on discussions of color metallography and its developments.

The depth distribution of tritium in stainless steel was measured by chemical etching.

The technics of chemical etching,chemical polishing and chromium electroplating for stainless steel mould were studied.

The approving structure of the sense organ is fulfilled by the fabrication techniques of laser processing and chemical etching, laser fibre optic vibration is used to test the vibration characteristic of the suspensi on beams.

A new crosshatching technology on polyimide flexible substrate is described using chemical etching method.

The Study of Porous InP Formed by Electrochemical Etching;

Then the electrochemical etching experiments are done in three electrodes electrobath .

In order to solve the difficulties in producing and welding tiny bridge-belt,twn methods- producing by electrochemical etching and laser welding with powder cladding were put forward.