Chemical formula CdO for cadmium oxide. Green-yellow, reddish-brown or blue-black crystals or powders, insoluble in water, soluble in dilute acids and ammonium salts. Used for silver solder, glass making, electrodes, anti-nematode agents, organic reaction catalysts, ceramic glaze and cadmium plating. CdO smoke is produced when cadmium or its compounds are processed at high temperature. Smoke or dust can affect health.
Cadmium oxide can be used as analytical reagent and catalyst, as well as in the preparation of high purity cadmium salt, cadmium plating solution and ceramic glaze. Its application is as follows:
1. Fabrication of a transparent conductive film of Cd-MgO
The films were prepared by magnetron sputtering technology with reasonable sputtering parameters. The target materials for magnetron sputtering are cadmium oxide and magnesium oxide. The atomic fraction of magnesium in the films is 0 < x < 0.5, and the thickness of the films is 170-290 nm. The present invention considers that increasing the content of Mg in the thin film can expand the cut-off wavelength of the thin film in the short wave range to the short wave direction, widen its optical band gap, effectively improve the light transmission performance in the short wave range, so that the spectral transmittance reaches more than 75% between the solar radiation wavelength 375-1800 nm, and the content of Mg component and the sputtering power of the target, the target and the substrate. The distance between the films is related to the deposition time.
2. Preparing an electrical contact material based on Ag-CdO
It contains cadmium oxide in a silver matrix or a major silver-containing alloy matrix. Its composition ranges from 80-88% Ag, 12-20% CdO, and 0.1-0.2% Ni0. The total composition is 100%. Its production process is: melting silver ingot, cadmium ingot and nickel ingot into ingot in a smelting furnace, processing into debris, and oxidizing at high temperature and pressure to obtain a cadmium oxide silver material. The debris is formed in a steel mould. Then the strip is extruded into a certain size in high temperature, and then the wire products are obtained by drawing. The invention saves 8% of precious metal silver, has short process flow and less equipment investment.