• 专利标题:   Surface passivation treatment method for silver particles, involves repeating steps of energizing and applying ultrasonic vibration or high-frequency electric field, and drying solution to obtain passivated silver particles.
  • 专利号:   CN113463152-A
  • 发明人:   ZHANG Y, CUI C, LIU Y, YANG G
  • 专利权人:   UNIV GUANGDONG TECHNOLOGY
  • 国际专利分类:   C25D003/04, C25D007/00
  • 专利详细信息:   CN113463152-A 01 Oct 2021 C25D-007/00 202103 Chinese
  • 申请详细信息:   CN113463152-A CN10782146 12 Jul 2021
  • 优先权号:   CN10782146

▎ 摘  要

NOVELTY - The method involves energizing solution. A Cr is deposited on a surface of silver particles (1) on a conductive porous network graphene electrode to cause passivation. The conductive porous network graphene electrode (4) is turned in a container 180?o. An ultrasonic vibration or high-frequency electric field is applied to make the passivated silver particles fall off. New unpassivated silver particles are reattached to the graphene electrode. The steps of energizing and applying ultrasonic vibration or high-frequency electric field are repeated until all silver particles complete the passivation. The solution is dried to obtain the passivated silver particles. A pH value of the solution containing the passivation solution is 2-9. A solvent is water, methanol or ethanol. A solute is H2O2, diaminotriazole, acrylic resin, epoxy resin, tannic acid, phytic acid and organic molybdate and chromium. A mixture of chromium, sulfate ion, chlorine, Nitrate ions and alkali metal ions. USE - Surface passivation treatment method for silver particles. ADVANTAGE - The method processes the silver particles with different particle sizes. DESCRIPTION OF DRAWING(S) - The drawing shows a process flow diagram illustrating a surface passivation treatment method for silver particles. Silver particle (1) Solution containing passivation solution (2) Anode (3) Conductive porous network graphene electrode (4) Passivation layer (5)