ELECTROLYTE FOR ELECTROCHEMICAL SEDIMENTATION OF IRIDIUM ON GALLIUM ARSENIDE AND METHOD OF PREPARING THEREOF Russian patent published in 2014 - IPC C25D3/50 C25D7/12 

FIELD: chemistry.

SUBSTANCE: method of preparing an electrolyte for electrochemical sedimentation of iridium on gallium arsenide includes dissolution of sulphaminic acid and hexachloroiridic acid in deionised water with thermal processing of the solution on a water bath at a temperature of 100°C, 30-60 g/l of sulphaminic acid and 3.0-6.5 g/l of hexachloroiridic acid in terms of iridium are dissolved, and thermal processing of the solution is carried out for 3-4 hours until initial coloration of the solution turns into stable orange-yellow, after which the solution is cooled, filtered and deionised water is added to the initial content of iridium.

EFFECT: increased quality of coatings with the high output by current and high thermal and atmospheric stability.

3 cl, 3 tbl, 1 dwg