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

MATERIAL WITNESSES — RESEARCHERS AROUND THE WORLD ARE DELVING INTO DREXEL’S 2D MXENE

Researchers from the A.J. Drexel Nanomaterials Institute have been studying MXene for nearly half a decade. (L-R): Olekisy Gogotsi (Director of Materials Research Center, Ukraine), Gabriel Scull, Babak Anasori, Mohamed Alhabeb, Yury Gogotsi.

More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist. Highly electrically conductive MXenes show promise in electrical energy storage, electromagnetic interference shielding, electrocatalysis, plasmonics and other applications.

 
Prof. Gogotsi has been included in the list of ISI Highly Cited researchers for the 3rd year in the row

altProf. Gogotsi has been named among Highly Cited Researchers 2016, representing worlds most influential scientific minds

 
Appointment ceremony of Honorary professorship for prof. Yury Gogotsi, Jilin University, Changchun, China on October 20, 2016

Honorary professor of Jilin University Yury Gogotsi  and Li Yuanyuan, President of Jilin University, academician of the Chinese Academy of Engineering

The official appointment ceremony of Honorary professorship for Dr. Yury Gogotsi took place in a ceremonial atmosphere at Jilin University, Changchun, Jilin Province, China on October 20, 2016.

 
12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII)

12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII)12th IUPAC International Conference on Novel Materials and their Synthesis (NMS-XII), is held during 14-19 October, 2016 at Hunan Agriculture University together with Nanjing Tech University, Fudan University and University of Technology, Sydney.

 
Cleaning up electromagnetic pollution by containing the emissions with a thin coating of a nanomaterial called MXene

MXene is a nanomaterial that is both thin and light, but also has the unique ability to block and absorb electromagnetic radiation, which makes it the perfect for use as shielding in electronics devices.

 According to the authors, when electromagnetic waves come in contact with MXene, some are immediately reflected from its surface, while others pass through the surface but they lose energy amidst the material’s atomically thin layers.

 
Beijing University of Chemical Technology awarded prof. Yury Gogotsi, Drexel University (USA) the title of Honorary Professor

Honorary Professor appointment ceremony at the Beijing University of Chemical TechnologyBeijing University of Chemical Technology have decided to award prof. Yury Gogotsi, Drexel University (USA) the title of Honorary Professor based on his distinguished academic accomplishments. 

 
Prof. Yury Gogotsi became the winner of 2016 Nano Energy Award!

prof. Yury Gogotsi, Drexel UniversityNano Energy Award was presented to prof. Yury Gogotsi at 2016 Nanoenergy and Nanosystems Conference, which was held in Beijing on 13-15 July 2016.

 
Professor Yury Gogotsi, director of Drexel Nanomaterials Institute, Drexel University, USA, and director of Materials Research Centre Oleksiy Gogotsi visited Jilin University in Changchun, China

meeting at Jilin UniversityProfessor Yury Gogotsi, director of Drexel Nanomaterials Institute, Drexel University, USA, and director of Materials Research Centre Oleksiy Gogotsi visited Jilin University in Changchun, China, to meet research partners and discuss work questions and joint cooperation.

 
Yury Gogotsi gave a seminar lecture on Two-Dimensional Carbides and Nitrides (MXenes) and Their Applications in Energy Storage, Jilin University, China

Director of Materials Research Centre Oleksiy Gogotsi visited interesting seminar lecture of Prof. Yury Gogotsi on MXenes for the students of Jilin University.

June 16, 2016 prof. Yury Gogotsi gave a seminar lecture on Two-Dimensional Carbides and Nitrides (MXenes) and Their Applications in Energy Storage for the sudents and researchers of Jilin University, Changchun, China.

 
Nature Conference on Materials for Energy 2016

altProf.Yury Gogotsi at the Nature Journals’ Materials for Energy conference gave a talk on Synthesis, Properties And Energy Storage Applications of Two-Dimensional Carbides (Mxenes) in Wuhan University of Technology Conference Centre, Wuhan, China

 
Congratulations to Prof. Gogotsi on winning the 2016 Nano Energy Award

prof. Yury Gogotsi, Drexel UniversityThe award will be presented to prof. Yury Gogotsi at the Nanoenergy and Nanosystems 2016 conference, which will be held in Beijing between 13-15 July 2016.

 
Congratulations to professor Yury Gogotsi for being named a Thomson Reuters 2015 Highly Cited Researcher!

altProfessor Yury Gogotsi have been listed in the 2015 World’s Most Influential Scientific Minds. 

 
Prof. Yury Gogotsi has been admitted as Fellow of the Royal Society of Chemistry (FRSC)

Royal Society of ChemistryProf. Yury Gogotsi has been admitted as Fellow of the Royal Society of Chemistry (FRSC) on December 11, 2015 for his outstanding contribution to chemistry. 

 
Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture

Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture at the Institute of Metal Research (IMR) of the Chinese Academy of Sciences on Nov. 5.Prof. Yury Gogotsi was awarded the Lee Hsun Award Lecture at the Institute of Metal Research (IMR) of the Chinese Academy of Sciences on November 5, 2015.

 
Yury Gogotsi and Patrice Simon were announced as the laureates of RUSNANOPRIZE 2015 at the Open Innovations Forum in Moscow, October 28, 2015

Лауреаты премии RUSNANOPRIZE 2015 проф. Юрий Гогоци (Университет Дрекселя, США) и проф. Патрис Симон (Университет Тулузы им. Поля Сабатье, Франция), 28 октября 2015 г.

Winners of the international award RUSNANOPRIZE 2015 became Yury Gogotsi,  professor  of Drexel University (USA), Director of the Institute of nanomaterials Drexel University (USA), and professor of the University Paul Sabatier (France), Patrice Simon for the fundamental studies and development of carbon nanomaterials for electrochemical supercapacitors.