Return to search

Vliv modifikace HVOF nástřiku slitiny NiCrBSi elektronovým paprskem na jeho strukturu / Effect of modification of HVOF sprayed alloy NiCrBSi by electron beam on its structure

This thesis deals with surface re-melting by electron beam of thermal sprayed material NiCrBSi by method HVOF. The microstructure, chemical and phase composition, hardness and abrasive wear resistance were evaluated in depending on the electron beam parameters and modes of the electron beam 6-poinst and line. Observed microstructure was better after both methods of re-melting. The splats were not observed, coating porosity decreased and structure was more homogenous. Structure and phase analysis was acquired by light microscopy, scanning electron microscopy, energy dispersive spectroscopy and x-ray diffraction. A small change in hardness between modes of re-melting was observed, but measured hardness was higher than in sample without re-melting. Similar results were observed for abrasion resistance.

Identiferoai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:400445
Date January 2019
CreatorsPongrácz, Jakub
ContributorsHavlík, Petr, Foret, Rudolf
PublisherVysoké učení technické v Brně. Fakulta strojního inženýrství
Source SetsCzech ETDs
LanguageCzech
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/masterThesis
Rightsinfo:eu-repo/semantics/restrictedAccess

Page generated in 0.0018 seconds