Improved Bi Inllg amalgam

Abstract

BiInHg amalgam includes Bi 60%-70%, In 25%-35% and Hg 3%-8% (mass content). The amalgam also includes 0.1%-3.5% doped element, which is at least one from Pt, Ir, Pd, Rh, Cu, Ag, Au, etc. In procedure for preparing amalgam, doped element is melted to amalgam alloy directly so as to obtain the disclosed amalgam. Forming eutectic crystal between doped element and Bi, in improves grain structure of amalgam alloy, prevents mercury atoms from separating out. The invention makes amalgam in solid solution state become solid state. Advantages are: avoiding conglutination of surfaces of amalgam, convenience for manufacturing luminous tube and reducing environmental pollution.

Description

technical field [0001] The invention relates to an amalgam used in the manufacture of fluorescent lamps and energy-saving lamps. Background technique [0002] In the manufacture of fluorescent lamps and energy-saving lamps, amalgam is usually used to control the mercury pressure in the lamp tube, so that the mercury pressure is at the optimum value of 0.8Pa, and the highest light efficiency can be obtained. Different amalgam element ratios provide different temperature regions with the optimum value of 0.8Pa. Amalgam can be solid, solid solution, gel and liquid at room temperature, and most amalgams are solid. Some proportioning amalgam used in the prior art is such as: BiInHg, and the common feature that this amalgam has is: the mass ratio of Bi and In is about 2: 1, and the mass content of Hg is 3%-8%, The best mercury pressure (0.8Pa) can be provided in the temperature range around 80°C-100°C, but this type of amalgam is often in a solid solution state at room temperatu...

AI Technical Summary

Problems solved by technology

Some proportioning amalgam used in the prior art is such as: BiInHg, and the common feature that this amalgam has is: the mass ratio of Bi and In is about 2: 1, and the mass content of Hg is 3%-8%, The best mercury pressure (0.8Pa) can be provided in the temperature range around 80°C-100°C, but this type of amalgam is often in a solid solution state at room temperature (around 25°C), and there are mercury atoms on the surface. It is easy to cause adhesion, which is not conducive to environmental protection and is not convenient for the application of lamps