Title :
Composite coatings structure and properties based on titanium diboride obtained by electron-beam fusing
Author :
Starostina, L.A. ; Shilenko, A.V. ; Galchenko, N.K.
Author_Institution :
Tomsk Polytech. Univ.
Abstract :
The use of titanium diboride in different areas of engineering and technology is conditioned by availability of such properties, as high hardness, melting temperature, and electrical conductivity. In the given work the coatings titanium diboride-metallic bonding, overcoated by multilayer electron-beam fusing (EBF) on a substrate from steel 3 are investigated. SVS composite (TiB2+Fe) and mixture of ligatures of a commercial production intended for creation of exothermal connection TiB2 with different contents of bonding was used as a furnace. The grain-size composition of powders varied in the range of 100-250 microns. The estimation of structure of fusing was the definition of a phase structure and morphology of the main structural components with a microhardness testing
Keywords :
boron alloys; crystal morphology; electrical conductivity; electron beam applications; grain size; hardness testing; melting; microhardness; steel; substrates; titanium alloys; 100 to 250 mum; SVS composite; TiB2; TiB2-Fe; bonding; composite coatings structure; electrical conductivity; electron-beam fusing; exothermal connection TiB2; furnace; grain-size composition; high hardness; melting temperature; microhardness testing; morphology; multilayer electron-beam fusing; phase structure; powders; steel 3 substrate; structural components; titanium diboride; Availability; Bonding; Coatings; Conductivity; Furnaces; Nonhomogeneous media; Production; Steel; Temperature; Titanium;
Conference_Titel :
Modern Techniques and Technology, 2000. MTT 2000. Proceedings of the VI International Scientific and Practical Conference of Students, Post-graduates and Young Scientists
Conference_Location :
Tomsk
Print_ISBN :
0-7803-5789-2
DOI :
10.1109/SPCMTT.2000.896090
