Effect of pulsed magnetic field on the thermal decomposition of zirconium hydroxide

Alekseenko, V. I.; Волкова, Г. К.; Даниленко, И. А.; Dobrikov, A. A.; Konstantinova, T. E.; Datsko, O. I.

doi:10.1007/bf02758703

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…Some reports [146][147][148] pointed that the precipitation methods with microwave drying, pulse magnetic field treatment, and ultrasonication of Zr hydroxide resulted in formation of small size "soft" Zr hydroxide agglomerates. Subsequent processes of calcination under low temperature allowed obtaining ZrO 2 nanoparticles with predetermined particle size of narrow size distribution and "soft" agglomerates.…”

Section: Agglomeration Of Zro 2 Nanoparticles and Methods To Prevent Itmentioning

confidence: 99%

The Effect of Addition of Nanoparticles, Especially ZrO2-Based, on Tribological Behavior of Lubricants

Rylski

Siczek

2020

Lubricants

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The aim of the paper was to discuss different effects, such as, among others, agglomeration of selected nanoparticles, particularly those from zirconia, on the tribological behavior of lubricants. The explanation of the difference between the concepts of ‘aggregation’ and ‘agglomeration’ for ZrO2 nanoparticles is included. The factors that influence such an agglomeration are considered. Classification and thickeners of grease, the role of additives therein, and characteristics of the lithium grease with and without ZrO2 additive are discussed in the paper. The role of nanoparticles, including those from ZrO2 utilized as additives to lubricants, particularly to the lithium grease, is also discussed. The methods of preparation of ZrO2 nanoparticles are described in the paper. The agglomeration of ZrO2 nanoparticles and methods to prevent it and the lubrication mechanism of the lithium nanogrease and its tribological evaluation are also discussed. Sample preparation and a ball-on disc tester for investigating of spinning friction are described. The effect of ZrO2 nanoparticles agglomeration on the frictional properties of the lithium grease is shown. The addition of 1 wt.% ZrO2 nanoparticles to pure lithium grease can decrease the friction coefficient to 50%. On the other hand, the agglomeration of ZrO2 nanoparticles in the lithium grease can increase twice the friction coefficient relative to that for the pure grease.

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Section: Agglomeration Of Zro 2 Nanoparticles and Methods To Prevent Itmentioning

confidence: 99%

The Effect of Addition of Nanoparticles, Especially ZrO2-Based, on Tribological Behavior of Lubricants

Rylski

Siczek

2020

Lubricants

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“…N. Koval' [144] are devoted to further s.tudy of martensite transformations in alloys with the effect of shape memory. We should mention the works of the institute on martensite transformations in ceramic materials (ZrO 2 -Y203 ), where the process is initiated by a pulsed magnetic field [147] or high hydrostatic pressure [ 148]. We should mention the works of the institute on martensite transformations in ceramic materials (ZrO 2 -Y203 ), where the process is initiated by a pulsed magnetic field [147] or high hydrostatic pressure [ 148].…”

Section: Part 111 E F F E C T Of Preliminary Actions On Martensite Tmentioning

confidence: 99%

Martensite transformations: History and laws

Maksimova¹

1999

Met Sci Heat Treat

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Ol'ga Pavlovna Maksimova (born 1915) is a candidate of engineering and a senior research worker. From 1946 to 1990 she worked at the Institute of Metal Science and the Physics of Metals of the Bardin TsNIIChERMET investigating martensite transformation under the guidance of Academician G. V. Kurdyumov. She has published 91 scientific works, some which have been translated in leading foreign journals.

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Estimation of Agglomeration Degree and Nanoparticles Shape of Zirconia Nanopowders

Даниленко

Konstantinova

Pilipenko

et al. 2011

Part & Part Syst Charact

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The influence of different surfactants (Trilon B, Polyammoniumacrylate and Neonol) and mineralizers (HCl, KOH, CH3COOH, etc.) on agglomeration degree of zirconia nanopowders obtained by precipitation technique was investigated. By adding of surfactants and mineralizers the different phase composition, particle size and agglomeration degree of zirconia nanopowders were obtained. The comparison between experimental specific surface area (SSA) value and calculated surface area for nonagglomerated spherical particle model show that experimental value of SSA bigger than calculated value. We proposed that low calcining temperatures (less than 700 °C) lead to formation the zirconia particles with cylindrical form. When taking into account the contact area between the particles in this model, we recalculate the surface area of powders and get better fit to experimental value.

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Effect of pulsed magnetic field on the thermal decomposition of zirconium hydroxide

Cited by 4 publications

References 2 publications

The Effect of Addition of Nanoparticles, Especially ZrO2-Based, on Tribological Behavior of Lubricants

The Effect of Addition of Nanoparticles, Especially ZrO2-Based, on Tribological Behavior of Lubricants

Martensite transformations: History and laws

Estimation of Agglomeration Degree and Nanoparticles Shape of Zirconia Nanopowders

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