Testing of the material samples on the abrasive wear

Abrasive wear of the material
This test was held to decide on the material, which should be used to manufacture the equipment provided contact with bulk material (coke)...
Rus На русском Eng In English

 

Abrasive wear of the material can be treated as solids affecting the detail surface it is contacting with (process of the particle friction against the detail surface). In some cases fractions can slide on a surface of contact which causes its plastic deformation or penetrate into the material’s surface and move with it cutting the material’s microvolumes. Intensity of the abrasive wear depends on the abrasive fractions hardness, sizes and shape.

On the video one can see the abrasive wear. Mechanism of the wear is microcutting. Choice of this mechanism is conditioned by the fact that while contact of the material, the equipment is manufactured of, with bulk material (coke), the wear of the material is going according to a scheme typical for this mechanism of wear.

The study was done on the immovable ring type facility::

- The ring is placed in a through with the abrasive material;

- Axial being effected by revolvings from the gear is passing through the centre of the ring and has two levers which allows to fix the two samples in the ring;

- Сoke annealed at 900°C was put into the through.

- three stresses of samples pressing to the ring.

Two samples St3 and stainless steel were tested simultaneously on the facility

Wear of the sample by its sliding in a mass of abrasive particles
Pattern of the Immovable ring type facility: 1 - through, 2 – immovable ring, 3 - sample, 4 - holder, 5 - beam, 6 - gear, 7 – abrasive material
Samples before a trial on the abrasive wear
Samples after a trial on the abrasive wear
Samples before a trial on the abrasive wear
Samples after a trial on the abrasive wear

Just after samples friction one started a testing, recording time and mass of the wear. In this experiment the wear takes place by the sample rotation in the mass of abrasive particles (coke). The wear is defined by determining of linear dimensions changing.

After testing there were done graphs of the wear dependence on time, considering set conditions of the experiment. Obtained from the experiment results testify that samples of various materials under different loads show different properties. For instance, the wear resistance for St3 is increasing proportionally with increasing of pressure and is decreasing by pressure increasing.

As the designed equipment is going to operate at low pressures from the results of the experiment one can see that it is reasonable to manufacture the equipment out of St3.

 

 

News from MRC.ORG.UA

Our new collaborative research paper with Drexel team on Porous Ti3AlC2 MAX phase enables efficient synthesis of Ti3C2Tx MXene

porous MAX phase technologyIn this study, we have optimized the synthesis of MAX phases for MXene manufacturing. The main purpose of this study is to develop a porous Ti3AlC2MAX phase that can be easily ground into individual grains manually without time-consuming eliminating the need for drilling and intenseball-milling before MXene synthesis. Moreover, we also demonstrate the synthesis of highly porous Ti3AlC2 (about 70%) from an inexpensive raw materials.

 
Novel electrically conductive electrospun PCL‑MXene scaffolds for cardiac tissue regeneration

Scanning electron microscopy image of PCLMXene membranes crosssection (left side) with the representation of EDX line (dotted line) and example of cross-sectional EDX elements line scan (right side)Here we demonstrate a new developed method for depositing Ti3C2Tx MXenes onto hydrophobic electrospun PCL membranes using oxygen plasma treatment. These novel patches hold tremendous potential for providing mechanical support to damaged heart tissue and enabling electrical signal transmission,thereby mimicking the crucial electroconductivity required for normal cardiac function. After a detailed investigation of scaffold-to-cell interplay, including electrical stimulation, novel technology has the potential for clinical application not only for cardiac regeneration, but also as neural and muscular tissue substitutes.

 
Read recently published paper about our collaborative work: MXene Functionalized Kevlar Yarn via Automated, Continuous Dip Coating

MXene Functionalized Kevlar Yarn via Automated,Continuous Dip CoatingThe rise of the Internet of Things has spurred extensive research on integrating conductive materials into textiles to turn them into sensors, antennas, energy storage devices, and heaters. MXenes, owing to their high electrical conductivity and solution processability, offer an efficient way to add conductivity and electronic functions to textiles. Here, a versatile automated yarn dip coater tailored for producing continuously high-quality MXene-coated yarns and conducted the most comprehensive MXene-yarn dip coating study to date is developed. 

 
MX-MAP project secondment visit of Dr. Oleksiy Gogotsi and Veronika Zahorodna from MRC to University of Padova, Italy, October 2023

altMX-MAP project participants from MRC Dr. Oleksiy Gogotsi and Veronika Zahorodna performed split secondment visit to project partner organization University of Padova (Italy). MX-MAP project works on development of the key strategies for MXene medical applications. 

 
CanbioSe Project Meeting and Project Workshop, September 26-27, 2023, Montpellier, France

altCanbioSe Project Meeting and Project Workshop was held  at European Institute of Membranes (IEM), University of Montpellier, France on September 26-27, 2023. The workshop was focused on the theme of "Commercializing Biosensors, Intellectual Property, and Knowledge Transfer from Academia to Industry.

 
IEEE NAP 2023: 2023 IEEE 13th International Conference “Nanomaterials: Applications & Properties” Sep 10, 2023 - Sep 15, 2023, Bratislava, Slovakia

altDr. Oleksiy Gogotsi and Veronika Zahorodna visited IEEE NAP 2023 conference held in Bratislava on September 10-15, 2023. The prime focus of the IEEE NAP-2023 was on nanoscale materials with emphasis on interdisciplinary research exploring and exploiting their unique physical and chemical proprieties for practical applications.

 
Visit to CEST labs in Wiener Neustadt (Low Energy Ion Scattering, Batteries development) and TU Vienna (ELSA, SFA)

altDirector of MRC and Carbon-Ukraine Dr. Oleksiy Gogotsi visited CEST labs in Wiener Neustadt (Low Energy Ion Scattering, Batteries development) and TU Vienna (ELSA, SFA). He meet with Dr. Pierluigi Bilotto, Dr. Chriatian Pichler and their colleagues, discussing novel materials and r&d activities for new technologies.

 
MX-MAP Session at YUCOMAT Conference 2023 "Towards MXenes’ biomedical applications by high-dimensional immune MAPping", HORIZON-MSCA-2021-SE-01 project MX-MAP.

altMX-MAP Session was held during the YUCOMAT Conference 2023 titled: "Towards MXenes’ biomedical applications by high-dimensional immune MAPping", HORIZON-MSCA-2021-SE-01 project MX-MAP.

 
THE TWENTY-FOURTH ANNUAL CONFERENCE YUCOMAT 2023, HERCEG NOVI, MONTENEGRO, September 04-08, 2023

altThe conference was organised by the Materials Research Society of Sebia and supported by MRS-Singapore with the participation of a pleiad of distinguished scientists.

 
CANBIOSE secondment visit of Dr. Oleksiy Gogotsi and Veronika Zahorodna from MRC to European Institute of Membranes in Montpellier, France

altCANBIOSE project participants from MRC Dr. Oleksiy Gogotsi and Veronika Zahorodna performed secondment visit to project partner organization European Institute of Membranes in Montpellier (France) on August -September 2023.

 
MRC researchers visited Nanobiomedical Centre, Adam Mickewicz University in Poznan, Poland due to CANBIOSE project, April-May 2023

altMRC researchers Dr. Oleksiy Gogotsi and Veronika Zahorodna were visiting Nanobiomedical Centre, Adam Mickewicz University in Poznan, Poland due to close collaboration with AMU team led by Dr. Igor Iatsunskiy. 

 
Twenty Third Annual Conference - YUCOMAT 2022 Twelfth World Round Table Conference on Sintering - XII WRTCS 2022 Herceg Novi, August 29 – September 2, 2022

alt

Our collaborators and partners  presented our joint research at the Yucomat conference - at Symposium on Biomaterials and two collaborative posters at Conference Poster Session.

 
MRC team visited 2nd international MXene conference "MXenes: Addressing Global Challenges with Innovation"at Drexel University, USA on Aug. 1-3, 2022

second MXene COnference 2022, Drexel University, USA

MRC team members Dr. Oleksiy Gogotsi, Veronika Zahorodna, Dr. Iryna Roslyk visited MXene Confrence 2022.  This 2nd international MXene conference at Drexel University, August 1-3, 2022, put major MXene discoveries, including their record-breaking electrical conductivity, electromagnetic interference shielding capability, electrochemical capacitance, light-to-heat conversion, and other properties, into perspective.

 
Launching HORIZON-MSCA-2021-SE-01 MX-MAP Project: Towards MXenes biomedical applications by high-dimensional immune MAPping

MX-MAP project Meeting during the MXene international conference held in Drexel University on Aug. 3,  2022, and discussing the roadmap for launching MX-MAP research project on MXenes for medical applications.

 
H2020-MSCA-RISE NANO2DAY research project, last updates

alt

Researchers from University of Latvia and Materials Research Center, Ukraine are visiting Drexel University due to Horizon-2020-MSCA-RISE NANO2DAY research project.