Influence of ultrasound and surface-active substances on the dispersion of metal powders-Reference-Cited by-同舟云学术

Influence of ultrasound and surface-active substances on the dispersion of metal powders

Published:2020-08-20 Issue:3 Volume: Page:91-97
ISSN:2618-8287
Container-title:Tekhnicheskiy servis mashin
language:ru
Short-container-title:

Author:

Romanov Il’ya V.¹,Zadorozhniy Roman N.¹

Affiliation:

1. Federal Scientific Agroengineering Center VIM, Moscow, Russian Federation

Abstract

It is scientifically proven that reducing the particle size in metal powders leads to a noticeable improvement in the materials properties. The shape of powder particles and their nanoscale are of great importance in sintering technologies for the formation of dense homogeneous alloys, as well as in additive manufacturing. A negative feature of nanoparticles is that they can stick together and form agglomerates and aggregates. (Research purpose) The research purpose is in proving the influence of ultrasound on the dispersion of metal powders, as well as studying the issue of preventing sticking of particles of powder materials with the help of surfactants. (Materials and methods) The article presents conducted tests at the Lomonosov Moscow state University. Authors used three brands of powder obtained by electroerosive dispersion (T15K6, Lc38mts2 and Brazh9-12), a high-class portable digital ultrasound device of the Logiq-E series, a scanning electron microscope of the DESK-TOP AURA series, and a Spectro-photocolorimeter “Spekol-210”. (Results and discussion) A suspension of metal powders in distilled water was subjected to ultrasound for 1, 5 and 10 minutes. The percentage of particles of three fractions was studied on a scanning microscope: 40-150; 150-300 and more than 300 nanometers. Polyethylene glycol PEG-35 was introduced into the suspension in different proportions to study the effect of surfactants. Solutions were studied using a spectrophotometric method to determine the adsorption of surfactants on the filler. (Conclusions) The effect of ultrasound on the dispersion of metal powders has been proved. It was hypothesized that conducting the process of electroerosive dispersion in an ultrasonic field can provide a better quality powder material. Studies with the use of surfactants have shown the prospects of their use for adsorption modification of metal fillers in order to improve the adhesion properties.

Publisher

FSBI All Russian Research Institute for Mechanization in Agriculture (VIM)

Reference9 articles.

1. Zolotareva V.V. Vliyaniye nanoporoshkov na mekhanicheskiye i adgezionnyye svoystva epoksidnykh polimerov [influence of nanopowders on mechanical and adhesive properties of epoxy polymers]. Mezhdunarodnyy zhurnal gumanitarnykh i estestvennykh nauk. 2016. N1-6. 141-148 (In Russian).

2. Girshov V.L., Kotov S.A., Tsemenko V.N. Sovremennyye tekhnologii v poroshkovoy metallurgii [Modern technologies in powder metallurgy]. Saint Petersburg.: Izd-vo Politekhnicheskogo universiteta. 2010. 385 (In Russian).

3. Kreymer A.V., Ivanov P.S. Fizicheskiye metody polucheniya nanoporoshkov [Physical methods for the production of nanopowders]. Sovremennyye issledovaniya. 2018. N5(09). 218-222 (In Russian).

4. Romanov I.V., Zadorozhniy R.N. Metody polucheniya metallicheskikh poroshkov dlya tekhnologiy vosstanovleniya i uprochneniya detaley sel’skokhozyaystvennoy tekhniki [Methods of obtaining metal powders for technologies of restoration and strengthening of agricultural machinery parts]. Sel’skokhozyaystvennaya tekhnika: obsluzhivaniye i remont. 2019. N11. 37-44 (In Russian).

5. Kudryashova E.Yu., Shemberev I.A., Zadorozhniy R.N. Issledovaniye granulometricheskogo sostava poroshka tugoplavkikh materialov, poluchennogo metodom elektroerozionnogo dispergirovaniya [Studying the granulometric composition of the powder of refractory materials obtained by electroerosive dispersion]. Tekhnicheskiy servis mashin. 2018. Vol. 131. 133-142 (In Russian).