METHOD RESOLVING TIN DIOXIDE FILM

• Main Author: SHI ZHAOSHUN
• Format: Patent
• Language: English
• Published: 22.07.1987
• Edition: 4
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

This invention relates to a method for resolving the crystal film of tin dioxide, attached to the surface of backing material. Under normal temp. and pressure, the backing material attached by tin dioxide film is immersed in a prepared solution and processed, then it is quickly taken out of the solution and washed clearly by pure water. The solution is made according to following volume ratio: the concentrated hydrochloric acid-80-95%, the concentrated hydrofluoric acid-20-5% and the titanium filament is put into the solution according the ratio: 150-200 kilogram titanium filament per cubic metre of solution. The invention has following advantages: operating easily, resolving tin dioxide film quickly and completely, not corroding backing material and low cost.