Tribological Properties of Composite Materials Based on Titanium Prepared by High-Energy Action Methods

Metallurgist ◽  
2015 ◽  
Vol 59 (7-8) ◽  
pp. 640-644
Author(s):  
A. O. Krivenkov ◽  
S. N. Chugunov ◽  
D. B. Kryukov ◽  
A. N. Baranov ◽  
M. S. Gus’kov
Keyword(s):  
Composite Materials ◽  
Tribological Properties ◽  
High Energy ◽  
Action Methods

Influence of the particle size on the physical, mechanical and tribological properties of composites for brake pads

2021 ◽  
pp. 36-40
Author(s):  
F.F. Yusubov
Keyword(s):  
Particle Size ◽  
Composite Materials ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Phenol Formaldehyde ◽  
Environmentally Friendly ◽  
Brake Pads ◽  
Mechanical And Tribological Properties ◽  
Pin On Disk ◽  
Properties Of Composites

Tribotechnical indicators of environmentally friendly frictional composite materials with phenol-formaldehyde matrix are studied. Friction tests were carried out on a MMW-1 vertical tribometer according to the pin-on-disk scheme. Keywords: brake pads, composites, friction and wear, plasticizers, degradation, porosity. [email protected]

Analysis of tribological properties of graphite and aluminum composite materials prepared by powder metallurgy technique

2020 ◽  
Vol 10 (5) ◽  
pp. 663-670
Author(s):  
Zhigang Wang ◽  
Jun Li ◽  
Daquan Li
Keyword(s):  
Composite Materials ◽  
Powder Metallurgy ◽  
Friction Coefficient ◽  
Tribological Properties ◽  
Utilization Rate ◽  
Powder Metallurgy Technique ◽  
Aluminum Composite ◽  
Powder Metallurgy Process ◽  
Metallurgy Process ◽  
Composite Samples

In order to make full use of the wear resistance and antifriction of the mixed reinforced particles, improve the performance and utilization rate of the composite material, and reduce its wear amount, in this study, graphite and aluminum composite materials with different graphite concentration were prepared by powder metallurgy process. On this basis, the influence of different graphite concentration on the friction coefficient and wear amount of composite samples and different load on the wear amount of composite materials were discussed and analyzed. The results show that with the increase of graphite content, the friction coefficient and wear amount of the composite will decrease correspondingly. When the load is less than 30 N, the wear curve of the sample changes steadily. When the load is more than 30 N, the wear will increase sharply. Therefore, the analysis of the tribological properties of the graphite and aluminum composites based on the powder metallurgy process plays an important role in improving the utilization rate of the composite and reducing its wear.

TRIBOLOGICAL PROPERTIES OF Al2O3/ZrO2 SINTERED CERAMICS

Tribologia ◽  
2019 ◽  
Vol 283 (1) ◽  
pp. 67-72
Author(s):  
Grzegorz WIĄZANIA ◽  
Marcin KOT ◽  
Agnieszka WOJTECZKO ◽  
Zbigniew PĘDZICH
Keyword(s):  
Composite Materials ◽  
Tribological Properties ◽  
Dry Friction ◽  
Elevated Temperatures ◽  
Friction Contact ◽  
Manufacturing Costs ◽  
Mechanical And Tribological Properties ◽  
Complex Shapes ◽  
Ball On Disc

The paper presents mechanical and tribological properties of Al2O3/ZrO2 composite sinters with different proportions of Al2O3 and ZrO2 phases. These materials are commonly used in dry friction contact due to relatively low manufacturing costs of even complex shapes of products and the possibility of working at elevated temperatures. The tests were carried out by the ball-on-disc method at temperatures of 20, 150, 300, and 500°C. A ball made of Al2O3 was used as a counterpart. The results were compared with the following sintered mono-phase materials: Al2O3(alumina) and tetragonal yttria-stabilized ZrO2 polycrystallines (Y-TZP). The tests showed the significantly better properties of composite materials.

Evaluation of the properties of polymer composites with carbon nanotubes in the aspect of their abrasive wear

2019 ◽  
Vol 1 (95) ◽  
pp. 5-12 ◽  
Author(s):  
A. Krzyżak ◽  
E. Kosicka ◽  
R. Szczepaniak ◽  
T. Szymczak
Keyword(s):  
Carbon Nanotubes ◽  
Composite Materials ◽  
Bisphenol A ◽  
Abrasive Wear ◽  
Polymer Composites ◽  
Tribological Properties ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Friction Modifier ◽  
The Impact

Purpose: Carbon nanotubes are used in composite materials due to the improvement of (including tribological) properties of composites, especially thermoplastic matrix composites. This demonstrates the potential of CNTs and the validity of research on determining the impact of this type of reinforcement on the composite materials under development. Design/methodology/approach: The article presents selected results of research on polymer composites made of C.E.S. R70 resin, C.E.S. H72 hardener with the addition of a physical friction modifier (CNTs) with a percentage by volume of 18.16% and 24.42%, respectively, which also acts as a reinforcement. The produced material was subjected to hardness measurements according to the Shore method and EDS analysis. The study of abrasive wear in reciprocating movement was carried out using the Taber Linear Abraser model 5750 tribotester and a precision weight. The surface topography of the composite material after tribological tests was determined using scanning electron microscopy (SEM). Some of the mentioned tests were carried out on samples made only of resin, used as the matrix of the tested polymer composite. Findings: Carbon nanotubes used in polymer matrix composites, including bisphenol A/F epoxy resin have an influence on the tribological properties of the material. The addition of carbon nanotubes contributed to a 24% increase in the Ra parameter relative to pure resin, to a level corresponding to rough grinding of steel. Research limitations/implications: The results of the tests indicate the need to continue research in order to optimize the composition of composites in terms of operating parameters of friction nodes in broadly understood aviation. Originality/value: The analysed literature did not find any studies on the impact of the addition of carbon nanotubes on epoxy resins based on bisphenol A/F. Due to the wide scope of application of such resins, the properties of such composite materials in which carbon nanotubes are the reinforcing phase have been investigated.

Application of the microwave technique for burning-rate measurement in high-energy composite materials

2000 ◽  
Vol 36 (1) ◽  
pp. 72-75 ◽  
Author(s):  
A. S. Zharkov ◽  
M. G. Potapov ◽  
V. P. Lushev ◽  
Yu. A. Galonko ◽  
A. A. Pavlenko ◽  
...  
Keyword(s):  
Composite Materials ◽  
Burning Rate ◽  
High Energy ◽  
Rate Measurement ◽  
Microwave Technique

Composite Materials in Automotive: Improving Safety by Refining FEA Correlation

2013 ◽  
Author(s):  
Giuseppe Miscia ◽  
Enrico Bertocchi ◽  
Luca D’Agostino ◽  
Andrea Baldini ◽  
Enrico Dolcini ◽  
...  
Keyword(s):  
Composite Materials ◽  
Optimization Technique ◽  
Software Tool ◽  
High Energy ◽  
Head Impact ◽  
Safety Standards ◽  
Impact Simulation ◽  
Experimental Correlation ◽  
Open Issue ◽  
Materials Behavior

In the last few years, the restrictive safety standards and the need for weight reduction have brought the crashworthiness research to focus on composite materials because of their high energy absortion-to-mass ratio. On the other hand, the possibility of obtaining predictive dynamic FEA models for these new materials is still an open issue: the present work aims at developing a methodology for the characterization of composite materials with particular interest for the head impact simulation. Composite materials behavior, defined through the mathematical models implemented in FEA codes, is very complex and requires a large amount of physical and numerical setting parameters. The majority of these parameters can be obtained by an experimental campaign that involves several kind of different tests. The presented methodology allows to obtain a good numerical-experimental correlation simply performing few tests which emulate the behavior of the component during the head impact event. A software tool based on a genetic optimization technique has been developed in order to determinate automatically the material properties values that guarantee the best numerical-experimental correlation.

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