Open AccessMaking Ceramic Protective Coatings on Titanium Boride Base by Electric Arc Surfacing with SHS Electrodes in an Argon Atmosphere
Author(s) -
А. О. Жидович,
А. М. Столин,
П. М. Бажин,
A. S. Konstantinov,
А. П. Чижиков
Publication year - 2020
Publication title -
advanced materials and technologies
Language(s) - English
Resource type - Journals
eISSN - 2541-8513
pISSN - 2414-4606
DOI - 10.17277/amt.2020.04.pp.012-016
Subject(s) - materials science , titanium , electric arc , coating , boride , metallurgy , indentation hardness , microstructure , argon , electrode , composite material , deposition (geology) , ceramic , phase (matter) , paleontology , chemistry , physics , organic chemistry , atomic physics , sediment , biology
SHS extruded TiB / 30 wt.% Ti-layered long rods with a length of more than 100 mm and a diameter of 3 mm were made by electric arc surfacing on a titanium substrate in an argon atmosphere. Technological modes of coating deposition (electric arc current, arc speed, argon flow intensity, etc.) have been worked out by the method of electric arc surfacing. The structure and phase composition of the initial surfacing electrode and coating are investigated. It is shown that the deposited coating has a layered structure, its microstructure is represented by titanium diboride and monoboride in a matrix consisting of a solid boron in titanium solution. It was found that the structure and phase composition of the coating are predominantly identical to the structure and phase composition of the used SHS electrodes. The microhardness of the deposited electrode and coating was 1024 and 1420 HV, respectively.