P.A. Koz'min

Hofmeister (Czechia)

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

M. D. Surazhskaya

NS Kurnakova Institute of General and Inorganic Chemistry

T.B. Larina

Kurchatov Institute

Surazhskaya

NS Kurnakova Institute of General and Inorganic Chemistry

I.B. Baranovskii

Russian Academy of Sciences

AČ

Adam Čermák

Czech Technical University in Prague

ВГ

В. Г. Кузнецов

Ioffe Institute

A.S. Kotel'nikova

Belgorod National Research University

ŠS

Šimon Syrovátka

University of West Bohemia

Pavel Zeman

Czech Technical University in Prague

Tomáš Polcar

Czech Technical University in Prague

Cooperative Institutions

NS Kurnakova Institute of General and Inorganic Chemistry

Russian Academy of Sciences

University of West Bohemia

Czech Technical University in Prague

Kurchatov Institute

Hofmeister (Czechia)

Center for Physical Sciences and Technology

Silesian University of Technology

Institute of General and Inorganic Chemistry

A.V. Topchiev Institute of Petrochemical Synthesis

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Crystal and molecular structures of 2-amino-5-(m-nitrophenyl)-1,3,4-Thiadiazole

Crystallography Reports (2006)

M. M. Ishankhodzhaeva M. D. Surazhskaya A.Eh. Mukhammedov P.A. Koz'min

Monoclinic crystal system

Diffractometer

Monochromator

Crystal (programming language)

10.1134/s1063774506010135

Cite

Citations (3)

Crystal structure of TlITlIII(CrO4)2

Journal of Structural Chemistry (1968)

P.A. Koz'min M. D. Surazhskaya

Solid-state physics

Crystal (programming language)

10.1007/bf00741590

Cite

Citations (1)

ChemInform Abstract: Trinuclear Oxosulfato Complexes of Iridium.

ChemInform (1991)

A.N. Zhilyaev T.A. Fomina P.A. Koz'min T.B. Larina M. D. Surazhskaya

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.199122033

Cite

Citations (0)

Influence of Laser Treatment of Ti6Al4V on the Behavior of Biological Cells

Materials (2024)

Šimon Syrovátka P.A. Koz'min František Holešovský Martin Šorm

This article explores the enhancement of material surface properties of Ti6Al4V, potentially applicable to dental implants, through ultra-short pulse laser systems. This study investigates potential connections between surface wettability and biocompatibility, addressing the challenge of improving variability in material properties with specific laser treatment. Several designed microstructures were manufactured using a picosecond laser system. After that, the wettability of these structures was measured using the sessile drop method. The basic behavior and growth activity of biological cells (MG-63 cell line) on treated surfaces were also analyzed. While the conducted tests did not conclusively establish correlations between wettability and biocompatibility, the results indicated that laser treatment of Ti6Al4V could effectively enlarge the active surface to better biological cell colonization and adhesion and provide a focused moving orientation. This outcome suggests the potential application of laser treatment in producing special dental implants to mitigate the issues during and following implantation.

Biocompatibility

Titanium alloy

10.3390/ma17092008

Cite

Citations (0)

The Effect of Coatings on Cutting Force in Turning of C45 Steel

Materials (2022)

Jaroslav Kovalčík Petr Mašek Jan Malý P.A. Koz'min Jiří Syrovátka

This article focuses on the development of a mathematical model of a cutting force that is applicable for coated and uncoated cutting tool inserts and aims to enable more accurate calculation of the cutting force. Two common PVD coatings, AlTiN and TiAlCrN, were used. Firstly, a mathematical model of the cutting force based on the specific cutting force and cutting area is proposed. This mathematical model considers the cutting speed and coating correction factor as well as the real cutting edge geometry, i.e., it includes both the straight and rounded parts of the cutting edge. For this proposed model, material constants for C45 steel, which was machined with uncoated inserts, were obtained. Before determining an equation for a coating correction factor and implementing it into the model, experimental cutting force data for coated and uncoated inserts were compared using a paired t-test. The result was that the difference between them was statistically significant. Their percentage difference was found to be up to 4%. The correction factor equation that was obtained and implemented into the mathematical model was applied to compare the calculated and experimental data of the coated inserts, also using a paired t-test. The result was that the difference between them was insignificant. Moreover, their percentage difference was found to be up to 0.6%.

Cutting tool

10.3390/ma15020590

Cite

Citations (2)

Micromachining with usage of LASER

Adam Čermák Valdemar Stankevič P.A. Koz'min Petr Šrachta

This article combines basic information of laser problems and options of laser process controlling during microm-achining. Possibilities of process controlling from view of laser source are characterized. The interaction of laser beam with workpiece (absorption and laser pulse length) is briefly defined. Next chapters deal with laser setting, which is divided into movement controlling of laser beam and laser beam setting from view of process parameters. Other part of the article compares advantages and disadvantages of micromilling and laser micromachining, where the similar attributes are confronted. The end of this article is dedicated to summarization of problems, which occur during laser micromachining, conclusion and possible recommendations eliminating mentioned prob-lems.

Source

Cite

Citations (0)

The structure of potassium octafluororhenate, K2ReF8

Journal of Structural Chemistry (1964)

P.A. Koz'min

Solid-state physics

10.1007/bf00747950

Cite

Citations (7)

Processing of ultra-hard materials with picosecond pulses: From research work to industrial applications

Journal of Laser Applications (2018)

Valdemar Stankevič Adam Čermák Saulius Mikalauskas P.A. Koz'min Simonas Indrišiūnas

The ultrashort laser processing of the cutting tools and cutting inserts from tungsten carbide, ceramic and metal composites (CERMET), and polycrystalline diamond materials was demonstrated, and the ablation rates of mentioned ultra-hard materials were evaluated for a laser wavelength of 1064 and 532 nm. The optimal processing throughput was estimated. Laser manufacturing was performed with the five-axis computer numerical control (CNC) machine and scanner for beam translation with the high speed and the ultrashort ∼12 ps pulse duration high repetition rate laser source. The systematic approach was implemented in an experimental variation of process parameters that play a significant role in processing quality. By varying the laser fluence, pulse overlap, and layers’ count, different material removing rates can be achieved from 300 nm/layer to ∼18 μm/layer. The submicrometer removing rate involves a high precision control of the structure depth. It was demonstrated that only by a minor change of the processing parameters, the surface roughness of the material could be minimized down to Ra < 300 nm. Rough and smooth processing can be combined to optimize the structure processing throughput.

Tungsten Carbide

Ultrashort pulse laser

Pulse duration

Laser Ablation

10.2351/1.5040633

Cite

Citations (10)

CCDC 276136: Experimental Crystal Structure Determination

The Cambridge Structural Database (2005)

Igor B. Baranovsky P.A. Koz'min M.A. Golubichnaya M. D. Surazhskaya

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc98bmh

Cite

Citations (0)

Gigantic lattices and gigantic non-crystalline clusters in glasses

Solid State Communications (1993)

S.A. Dembovsky P.A. Koz'min

Micrometer

10.1016/0038-1098(93)90827-a

Cite

Citations (9)