Influence Of The Structure Of Polymer Material On Modification Of The Surface Layer Of Iron Counterface In Tribological Contact

2015 ◽  
pp. 129-142
Keyword(s):  
Surface Layer ◽  
Polymer Material ◽  
Tribological Contact ◽  
Modification Of The Surface

Improvement of PA6 Mechanical Properties by Radiation Cross-Linking

2015 ◽  
Vol 1120-1121 ◽  
pp. 1163-1166 ◽  
Author(s):  
Petr Kratky ◽  
David Manas ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
Martin Ovsik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Polymer Material ◽  
Polyamide 6 ◽  
Polymer Materials ◽  
Cross Linking ◽  
Depth Sensing ◽  
Surface Layers ◽  
Hard Surface ◽  
End Use

Influence of mechanical properties of the hard surface layer of modified polyamide 6 is studied. Mechanical properties are acquired by nanohardness test with using the DSI method (Depth Sensing Indentation). Hard surface layers are created by radiation cross-linking technology. This technology allows polymer materials modification followed by the change of their end-use properties. The surface layer of polymer material is modified by ionizing β - radiation. When the polymer material is exposed to the β radiation, it is possible to observe changes of the surface layer at applied load. Radiation cross-linking usually improves strength, reduces creep, contributes to chemical resistance improvement, and in many cases improves tribological properties.

scholarly journals The analysis of friction properties after laser texturizing of the silicon carbide surface layer

2018 ◽  
Vol 183 ◽  
pp. 02010
Author(s):  
Norbert Radek ◽  
Agnieszka Szczotok ◽  
Renata Dwornicka
Keyword(s):  
Silicon Carbide ◽  
Surface Layer ◽  
Statistical Analysis ◽  
Design Of Experiments ◽  
Laser Beam ◽  
High Reliability ◽  
Laser Beam Machining ◽  
Before And After ◽  
High Roughness ◽  
Modification Of The Surface

The modification of the surface properties is a desired technological procedure. One of the possible method is the electro-spark deposition (ESD). Unfortunately, ESD process produces a surface with high roughness. The laser beam machining (LBM) has been involved to lower roughness of the coating made by ESD. The elements coated by ESD have been tested to determine tribological properties and they were compared before and after LBM. To achieve high reliability of the results, the test has been conducted in accordance with design of experiments methodology and the results which were obtained have been processed by a statistical analysis. The description of such an experiment performed for a silicon carbide SiC coating, the obtained results and the conclusions are included in this paper.

Research of the Chemico-Mechanical Practices in Polymer Material Processing by Cutting

2014 ◽  
Vol 490-491 ◽  
pp. 243-246
Author(s):  
Guang Liang Cheng ◽  
Xian Wei Wang
Keyword(s):  
Material Processing ◽  
Surface Layer ◽  
Polymer Material ◽  
Experimental Research ◽  
Workpiece Surface ◽  
Lower Resistance ◽  
Chemical Influence

On the basis of the analysis of phenomenon, taking place when polymer material are in aggressive mediums and on the basis of experiments chemical influence on polymer workplaces before by cutting was proved. The analysis of phenomena taking place when polymers interact with aggressive mediums has been made. Corresponding experimental research has been done and methods to direct changes of proceed material have been developed. The changes happen when the surface layer is processed preliminary to lower resistance to destruction of workpiece surface layer when it interacts with cutting instrument later.

Ionizing Radiation Effect on PMMA Measured by Microhardness

2013 ◽  
Vol 586 ◽  
pp. 198-201 ◽  
Author(s):  
David Manas ◽  
Martin Ovsik ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
Jakub Javorik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Cross Linking ◽  
Case Hardening ◽  
Microhardness Test ◽  
Irradiation Dosage ◽  
The Subject ◽  
Metal Materials ◽  
Injection Technology ◽  
Modification Of The Surface

The experimental study deals with the effect of modification of the surface layer by irradiation cross-linking on the mechanical properties of the Poly (methyl methacrylate) - PMMA tested using the instrumented microhardness test. The surface layer of PMMA specimen made by injection technology was modified by irradiation cross-linking using beta irradiation, which significantly influences mechanical properties of the surface layer. Compared to the heat and chemical-heat treatment of metal materials (e.g. hardening, nitridation, case hardening), cross-linking in polymers affects the surfaces in micro layers. These mechanical changes of the surface layer are observed in the instrumented microhardness test. Our research confirms the comparable properties of surface layer of irradiated PMMA with highly efficient polymers. The subject of this research is the influence of irradiation dosage on the changes of mechanical properties of PMMA.

scholarly journals Modification of the surface layer of the system coating (TiCuN)/substrate (A7) by an intensive electron beam

2015 ◽  
Vol 81 ◽  
pp. 012009 ◽  
Author(s):  
Yu F Ivanov ◽  
A I Potekaev ◽  
E A Petrikova ◽  
O V Ivanova ◽  
I A Ikonnikova ◽  
...  
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Modification Of The Surface

Influence of Irradiation Doses on Mechanical Properties of Glass Fiber Filled PBT

2015 ◽  
Vol 752-753 ◽  
pp. 130-135
Author(s):  
Petr Kratky ◽  
David Manas ◽  
Miroslav Manas ◽  
Michal Stanek ◽  
Martin Ovsik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Polymer Material ◽  
Applied Load ◽  
Glass Fibers ◽  
Polymer Materials ◽  
Cross Linking ◽  
Depth Sensing ◽  
Hard Surface ◽  
End Use

The submitted paper compares mechanical properties of the hard surface layer of modified PBT filled by 35% of glass fibers. Hard surface layer was made by radiation cross-linking technology which allows polymer materials modification followed by the change of their end-use properties. The surface layer of polymer material is modified by β – radiation. When the polymer material is exposed to the β – radiation, it is possible to observe changes of the surface layer at applied load. The mechanical properties were measured by nanohardness test with using the DSI method (Depth Sensing Indentation).

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