CONDITIONS FOR PREPARING THE SURFACE OF CONTACT PARTS FOR WETTIBILITY WITH MERCURY
Mussina A.S. Baitasheva G.U. Zakirov B.S. Gorbulicheva Y.P.
2024National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2024#2024Issue 4168 - 184 pp.
The paper provides a scientific analysis of the behavior of the iron group metals and alloys on their basis in the processes of chemical preparation of surfaces prior to applying stable mercury coatings to create a new generation of switching devices, represented mainly by mercury wetted reed switches. The existing difficulties are determined by the problematic operation of reed switches with solid-state contacts, associated with the signal bounce, unstable contact resistance and wear of contact surfaces. To solve these problems, the use of liquid metal microswitches has been proposed, where a liquid-liquid contact is used, which is necessary to ensure a trouble-free operation of the devices. For these purposes, the behavior of the iron group metals and alloys on their basis in the processes of chemical preparation of their surfaces prior to applying mercury coatings has been studied. For the both stages of chemical processing - etching and polishing - the thickness of the removed layer of the material has been determined, and in case of alloys, the ratio in which the metals go into the solution has also been determined. The behavior of the iron group metals and alloys on their basis in the processes of etching and polishing indicates that during chemical treatment the surface is completely cleaned of oxides, and the correspondence of the ratio of the layer surface to their chemical composition is achieved.
amalgamation , chemical treatment , contacts , etching , mercury , polishing , reed switch
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Kazakh National Women’s Teacher Training University, Almaty, Kazakhstan
Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
Kazakh National Women’s Teacher Training University
Institute of General and Inorganic Chemistry of the Academy of Sciences of the Republic of Uzbekistan
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