Effect of aluminum nitride nanoparticles on structure, phase composition and properties of materials based on TiB/Ti obtained by SHS-extrusion method

Compact ceramic materials based on the Ti‒B system modified with 5 wt. % of nanosized Si3N4 particles. The results of studies of the structure, phase composition, and physical and mechanical characteristics of the materials obtained are presented. It is shown that the addition of Si3N4 promotes the formation of new phases, in particular, titanium diboride and nitride in the final product. It was found that the introduction of modifying nanosized Si3N4 particles into the initial charge leads to an increase in hardness and microhardness by 15‒20 %, as well as to an increase in crack resistance by 1,5 times in comparison with unmodified samples.

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THE OPTIMIZATION OF EXTRUSION OF MECHANICALLY ALLOYED "COPPER-CHROME" COMPOSITIONS AND THE FORMATION OF STRUCTURE, PHASE COMPOSITION AND PROPERTIES OF MATERIALS MADE FROM THEM

Вестник Белорусско-Российского университета ◽

10.53078/20778481_2014_2_45 ◽

2014 ◽

pp. 49-59

Author(s):

Fedor Grigoryevich Lovshenko ◽

Grigory Fedorovich Lovshenko ◽

Igor Aleksandrovich Lozikov

Keyword(s):

Phase Composition ◽

Mechanically Alloyed ◽

Structure Phase ◽

Properties Of Materials

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Theoretical and technological aspects of production mechani‑cally alloyed powders for the production of coatings and products by additive methods

Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY) ◽

10.21122/1683-6065-2021-4-90-105 ◽

2021 ◽

pp. 90-105

Author(s):

F. G. Lovshenko ◽

A. S. Fedosenko ◽

E. I. Marukovich

Keyword(s):

Phase Composition ◽

Thermal Spraying ◽

Thermal Spray Coatings ◽

Layer By Layer ◽

Properties Of Coatings ◽

Spray Coatings ◽

Structure Phase ◽

316L Steel ◽

Properties Of Materials ◽

Additive Methods

The established regularities of the formation of powders based on iron and nickel, obtained by the method of mechanical alloying and intended for the deposition of thermal spraying coatings, as well as the manufacture of products by layer‑by‑layer synthesis. The structure, phase composition and properties of materials are investigated. Powders consist of particles with a size of 20–70 microns, differ in the submicrocrystalline type structures, and nonequilibrium phase composition. Thermal spray coatings made of them have a set of properties that significantly exceed the properties of coatings made of commercially available materials. The diameter of the grains of the material obtained by the SLМ method from the synthesized powder is 1.5–2.0 times smaller than that produced from the powder of 316L steel, and the heat resistance is higher.

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Extraction of compact ceramic electrode materials based on the Ti‒B‒Fe system modified by nanosized AlN particles by SHS extrusion

NOVYE OGNEUPORY (NEW REFRACTORIES) ◽

10.17073/1683-4518-2020-6-51-55 ◽

2020 ◽

pp. 51-55

Author(s):

A. V. Bolotskaya ◽

M. V. Mikheev

Keyword(s):

Phase Composition ◽

Aluminum Nitride ◽

Electrode Materials ◽

Combustion Characteristics ◽

Nanosized Particles ◽

Shs Extrusion ◽

Effect Of Additives ◽

Initial Charge

Compact ceramic electrode materials based on the Ti‒B‒Fe system modified with nanosized particles of aluminum nitride (up to 15 wt. %) were obtained by SHS extrusion. The effect of additives on the combustion characteristics of the studied system, as well as on the structure and phase composition of the obtained materials, is studied. The addition of aluminum nitride increases the content of boride and nitride phases in the final product. It was found that the introduction of modifying nanosized particles of aluminum nitride into the initial charge leads to the grinding of grains of boride and nitride phases, which together increases the microhardness by 10 %, in comparison with unmodified samples.

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