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Title: Investigation of the structure and properties of boron-containing coatings obtained by electron-beam treatment

An investigation of surface-hardened materials obtained by cladding with an electron beam injected into the air atmosphere was carried out. Structural investigations of coatings revealed that an increase in boron carbide concentration in a saturating mixture contributed to a rise of a volume fraction of iron borides in coatings. The maximum hardened depth reached 2 mm. Hardened layers were characterized by the formation of heterogeneous structure which consisted of iron borides and titanium carbides distributed uniformly in the eutectic matrix. Areas of titanium boride conglomerations were detected. It was found that an increase in the boron carbide content led to an enhancement in hardness of the investigated materials. Friction testing against loosely fixed abrasive particles showed that electron-beam cladding of powder mixtures containing boron carbides, titanium, and iron in air atmosphere allowed enhancing a resistance of materials hardened in two times.
Authors:
; ; ;  [1]
  1. Novosibirsk State Technical University, Novosibirsk, 630073 (Russian Federation)
Publication Date:
OSTI Identifier:
22492550
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1683; Journal Issue: 1; Conference: International conference on advanced materials with hierarchical structure for new technologies and reliable structures 2015, Tomsk (Russian Federation), 21-25 Sep 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABRASIVES; AIR; ATMOSPHERES; BORON CARBIDES; CLADDING; COATINGS; CONGLOMERATES; DEPTH; ELECTRON BEAMS; EUTECTICS; FRICTION; HARDENING; HARDNESS; IRON BORIDES; LAYERS; MECHANICAL TESTS; MIXTURES; POWDERS; TITANIUM BORIDES; TITANIUM CARBIDES