Mercury alloy for fluorescent lamp and preparation method thereof
An amalgam and fluorescent lamp technology, applied in the field of amalgam, can solve the problems of good climbing characteristics and large particles, and achieve the effects of increasing melting temperature, large particles, and high saturated mercury vapor pressure
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[0124] It should be noted that, with image 3 Compared with the preparation method of amalgam for fluorescent lamps provided, Figure 4 The provided method for preparing the amalgam for fluorescent lamps adds the step of coating the transition layer. Generally speaking, if there is a lack of a transition layer in most cases, it is difficult for the amalgam to be wrapped and attached to the inner core substrate, resulting in the amalgam layer being easily cracked and broken, and the production pass rate is low. Zinc or zinc amalgam as a transition layer helps the alloy layer to wrap and adhere to the inner core and improve the strength of the alloy layer, but the luminous flux rise characteristic of the alloy is deteriorated, and it is easy to cause mercury spillage on the surface. The use of electroless tin plating as a transition layer can improve the wrapping performance of the alloy layer on the core, but the wrapping performance is not as good as that of zinc or zinc amal...
Embodiment 1
[0131] 1. Metal ratio
[0132] Tin: mercury: silver = 40: 58: 2
[0133] 2. Preparation method
[0134] 1. Put a ceramic core with a diameter of 1.0mm and a mass content of 40% tin and 58% mercury into the tank body of the three-dimensional rolling equipment, and form an amalgam layer with a thickness of 0.15mm through mechanical rolling. The tank body is in the Under the protection of argon, at a temperature of 20-30°C, the rotation speed is about 30-50 revolutions per minute, and the mixture is fully mixed for about 50-60 minutes. It can be divided into two or more times as required, and the amalgam coating process can be repeated.
[0135] 2. Put silver powder with a mass content of 2% in the container. The silver powder is a powder over 800 mesh. -10 minutes, fully mechanically tumbled to form a coating layer with a thickness of 0.05 mm. It can be divided into two or more times as needed, and the process of coating the coating layer can be repeated.
[0136] The parti...
Embodiment 2
[0138] 1. Metal ratio
[0139] Tin: mercury: gallium: silver: copper = 40: 58: 1: 0.5: 0.5
[0140] 2. Preparation method
[0141] 1. Immerse the ceramic core with a diameter of 1.4mm in the chemical plating solution with a mass content of 1% gallium metal in the container, and coat a transition layer with a thickness of 0.03mm at room temperature. The core coated with the chemical plating solution passes through Deionized water cleaning, organic solvent dehydration and drying treatment.
[0142] 2. Put 40% tin and 58% mercury into the tank body of the three-dimensional rolling milling equipment to form tin amalgam powder. The tank body is under the protection of argon, and at a temperature of 20-30 ° C, the speed is About 30-50 revolutions per minute, about 50-60 minutes, mix thoroughly.
[0143] 3. Put the treated ceramic core in the container, the container is under the protection of neon gas, at a temperature of 20-30 ℃, the rotation speed is about 30-50 revolutions per...
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