scholarly journals Study of the influence of quick-hardened alloy on the properties of metal polymers

2021 ◽  
Vol 29 (1) ◽  
pp. 41-44
Author(s):  
K. A. Yeriomina ◽  
O. B. Lysenko ◽  
V. K. Nosenko ◽  
Ya. E. Yarovyi
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Amorphous Alloys ◽  
Filler Content ◽  
Physical And Mechanical Properties ◽  
Aromatic Polyamide ◽  
Abrasive Wear Resistance ◽  
Electromagnetic Properties ◽  
Hardened Alloy ◽  
Metal Containing Polymers

The article explores the effect of quick-hardened alloy PR-N65X25S3R3 based on nickel, (chemical composition – Ni64,6Cr25C1,2Si2,7B2,5Mn0,2Fe3,8) on the physical and mechanical properties of metal-containing polymers. Carried out tests and results have shown that the use of quick-hardened alloys, which are characterized by a set of unique properties, is appropriate. The developed metal-containing polymers that contain aromatic polyamide phenylone and 5 - 20 wt.% of self-fluxing amorphous alloys PR-N65X25S3R3 are characterized by 2 times greater abrasive wear resistance and better adhesive strength between the components. Due to the use of quick-hardened alloy it was possible to increase theeffective filler content from 15 wt.% to 20 wt.% that will increase the electromagnetic properties of metal-containing polymers.

scholarly journals The Effect of Nature and Parameters of Particle Size Distribution of Graphite on Physical and Mechanical Properties of Polimer Composites based on Aromatic Poliamide

2016 ◽  
Vol 17 (4) ◽  
pp. 611-620
Author(s):  
H.O. Sirenko ◽  
L.M. Soltys ◽  
V.P. Svidersky ◽  
I.V. Sulyma
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Wear Resistance ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Physical And Mechanical Properties ◽  
Aromatic Polyamide ◽  
Ash Content ◽  
Natural Graphite ◽  
Distribution Parameters

The resultsof studies of the effect of nature and parameters of particle size distribution of graphite on physical and mechanical properties of polymer composites based on aromatic polyamide fenіlon C-2. The particle size of the filler and polymer for the theoretical gamma-distribution parameters (perimeter, thickness and diameter) have different values. Found the influence of fillers (natural graphite different bands), which differed ash content (5-15% and 0,05-2,5%), moisture and grinding fineness (dispersion) on the wear resistance of the samples of the polymer composite. There is non-linear connectionbetween the intensity and parameters graphite particles distribution.

scholarly journals Infuence of fiber vniivlon on the performance of organoplastics based on the BSP-7 copolymer

2020 ◽  
Vol 97 (3) ◽  
pp. 14-18
Author(s):  
O. Burya ◽  
◽  
M. Grashchenkova ◽  
O. Lysenko ◽  
Ye. Yeriomina ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Abrasive Wear ◽  
Filler Content ◽  
Abrasive Wear Resistance ◽  
Organic Fiber

This paper focuses on tribotechnical and physical-mechanical properties of the BSP-7 copolymer and organoplastics based on it with 10 ÷ 40 mass % of polyheteroarylene vniivlon fiber. It demonstrates that the reinforcement of copolymer with organic fiber improves its abrasive wear resistance by 64,2 % at a maximum filler content of 30 mass %. Proposed organoplastics based on the BSP-7 copolymer with effective content of 30 mass % of the filler can be recommended as a tribotechnical material for the manufacturing of the parts that work in the conditions of abrasive wear.

scholarly journals Physical, mechanical properties and wear resistance of iron-base matrix materials for sintered diamond tools fabricated by HP and SPS

Mechanik ◽  
2018 ◽  
Vol 91 (10) ◽  
pp. 846-849
Author(s):  
Elżbieta Bączek
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Metal Matrix ◽  
Physical And Mechanical Properties ◽  
Full Density ◽  
Matrix Composites ◽  
Plasma Sintering ◽  
Base Matrix ◽  
Spark Plasma ◽  
Sintered Diamond

Metal matrix composites were prepared by hot pressing (HP) and spark plasma sintering (SPS) techniques. Ball-milled ironbase powders were consolidated to near full density by these methods at 900°C. The physical and mechanical properties of the resulting composites were investigated. The specimens were tested for resistance to both 3-body and 2-body abrasion. The composites obtained by HP method (at 900°C/35 MPa) had higher density, hardness and resistance to abrasion than those obtained by SPS method.

scholarly journals Effect of Filler Nature on Chemical Resistance and Microhardness of Epoxy Composite Films

2015 ◽  
Vol 16 (3) ◽  
pp. 528-533
Author(s):  
G. Martinyuk ◽  
O. Aksimentyeva ◽  
N. Skoreiko ◽  
V. Zakordonskyi
Keyword(s):  
Mechanical Properties ◽  
Chemical Resistance ◽  
Filler Content ◽  
Epoxy Composite ◽  
Composite Films ◽  
Physical And Mechanical Properties ◽  
Epoxy Composites ◽  
Mineral Filler ◽  
Operating Characteristics ◽  
Mineral Fillers

We investigated the processes of water absorption, chemical stability and microhardness of films of epoxy composites that contained as the polymer matrix the epoxy resin UP-655 and mineral fillers: graphite, mica, aluminum oxide at their content (0 - 30 % mass). It found that introduction of mineral fillers significantly affects on all complex of operating characteristics of the films. Increase of filler content, especially mica, to 20 %, resulting in slower process and reducing the quantity of absorbed moisture by films. In the study of physical and mechanical properties of filled epoxy composites was established that the introduction of mineral filler significantly affects their microhardness, and the nature of the exposure is determined by the type and filler content.

Preliminary Research on Manufacturing Technology of Thin Bamboo Veneer Consolidated Composite Floor

2012 ◽  
Vol 503-504 ◽  
pp. 74-77
Author(s):  
Nan Hu ◽  
Xian Jun Li ◽  
Yi Qiang Wu ◽  
Xin Gong Li ◽  
Zhi Cheng Xue
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Bond Strength ◽  
Hot Pressing ◽  
Physical And Mechanical Properties ◽  
Pressing Pressure ◽  
Pressing Temperature ◽  
Decorative Material ◽  
Preliminary Research ◽  
Surface Bond

In this paper, the new bamboo-based consolidated composite floors were fabricated with thin bamboo veneers which used as decoration layers, wear resistant layers, high density fiberboards and equilibrium layers through assembling and scuffing. The effect rules of the composite floor on properties were preliminarily studied by three factors: hot-pressing temperature, pressure and time. The results showed that the wear resistance and surface bond strength of the thin bamboo veneer consolidated composite floor significantly increased with the rise of hot-pressing temperature. In the scope of resources, the effect of hot-pressing pressure and time on properties of the floor is not significant. The optimizing technology is hot-pressing temperature 170°C, pressure 3MPa and time 40s/mm in this study. The thin bamboo veneer consolidated composite floor is an excellent floor decorative material, which has good physical and mechanical properties.

Abrasive Wear Resistance of Bulk Metallic Glasses

2000 ◽  
Vol 644 ◽  
Author(s):  
A. Lindsay Greer ◽  
Wha-Nam Myung
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Abrasive Wear ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Abrasive Wear Resistance ◽  
Good Resistance ◽  
Fundamental Interest ◽  
Crystalline Materials ◽  
Resistance To Sliding

AbstractThis paper reviews work on the wear of metallic glasses in general, as well as reporting recent results on the abrasive wear of bulk metallic glasses. The distinctive mechanical properties of metallic glasses make their wear resistance of fundamental interest. Metallic glasses, and the partially or fully crystalline materials derived from them, can have very good resistance to sliding and abrasive wear. Standard wear laws are followed, with behaviour similar to that of conventional hardened alloys. The microhardness and abrasive wear resistance are measured for four bulk metallic glasses (based on La, Mg, Pd or Zr). The hardness and wear resistance correlate well with the Young's modulus of the glass.

Laser Surface Cladding of Al-Si Alloy

2005 ◽  
Vol 297-300 ◽  
pp. 2813-2818 ◽  
Author(s):  
Xun Cai ◽  
Xiaoyu Yang ◽  
Tao Zhao ◽  
Liuhe Li ◽  
Qiu Long Chen
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Laser Scanning ◽  
Sudden Change ◽  
Physical And Mechanical Properties ◽  
Laser Surface ◽  
Chemical Components ◽  
Interface Zone ◽  
Gradient Layer ◽  
Modified Layer

The mixture of Ni based alloy powder and WC particles were used as a feeding material to modify the surface properties of cast Al-Si alloy using a CO2 continuous transverse flow laser beam with maximum power of 10 kW. Microstructures and chemical components of the laser surface cladding (LSC) layers were studied using SEM, XRD, TEM and EDS. It is shown that the LSC layers were composed of γ-（ Ni, Cr, Fe, W）matrix phase and many enhancing phases, such as Ni2Al3, Ni3Al, WC, W2C, Cr2B, etc.. The microstructure of the LSC layers was greatly affected by the scanning rate b V and the powder of feeding rate p m under the same laser power. With the increasing of b V and p m , the dissolution phenomenon of WC particles was improved; the length, the diameter and the amount of the acicular constituent were markedly reduced. Microhardness and wear resistance tests were also performed: the average microhardness of the LSC layers was around 5.1 to 5.9GPa, which was five times higher than that of the Al-Si substrate. The wear resistance of the layer was about 20 times as big as that of cast Al-Si alloy when P=6kW, b V =13.3mm s-1, p m =100mg s-1, L=500N. The results showed that the mechanical properties of LSC layers on cast Al-Si alloy can be markedly enhanced with proper processing parameters. However, due to the sudden change of physical and mechanical properties between laser modified layer and substrate, some defects, especially crack, actually occur in the surface modified layer and the interface zone. And finally Ni/WC surface gradient layer was obtained on cast Al-Si alloy through thrice laser scanning technique. The microhardness of the laser gradient layer gradually changed from surface to substrate, so that it can reduce stress concentration in the whole laser surface layer, especially in the interface zone.

Effect of SiC Particle Size on the Physical and Mechanical Properties of NiTi Alloys

2017 ◽  
Vol 907 ◽  
pp. 3-7
Author(s):  
Hülya Akkan ◽  
Mehmet Şi̇mşi̇r ◽  
Kerim Emre Öksüz
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Wear Resistance ◽  
Wear Behavior ◽  
Physical And Mechanical Properties ◽  
Particle Sizes ◽  
Phase Development ◽  
Niti Shape Memory Alloys ◽  
Microstructural Studies ◽  
Sic Particle

NiTi shape memory alloys have attracted significant interest due to their unique superelasticity and high damping performance. In this work, the effect of SiC particle size on both physical and mechanical properties of NiTi matrix composite was investigated. Ni and Ti powders with particle sizes of 40 µm were used with the SiC addition with varying particle sizes of 20 µm and 40 µm, respectively. Composites of NiTi with 1wt. % SiC were fabricated by powder metallurgy technique. The effects of SiCp addition on hardness, relative density and wear behavior of NiTi composites have been investigated. The samples were examined by scanning electron microscope, for microstructural studies and phase development. The results showed that the distribution of the reinforced particle was uniform. Moreover, as the SiC particle size decreases, hardness and wear resistance increase. It was demonstrated that SiC particle size significantly enhanced the wear resistance of NiTi composite.

scholarly journals PHYSICAL AND MECHANICAL PROPERTIES OF MULTI-ELEMENT COATINGS

2021 ◽  
Vol 7 (2(38)) ◽  
pp. 31-32
Author(s):  
G. A. Zharmagambetova ◽  
I. A. Kudusova ◽  
V. Ch. Laurinas
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Wear Resistance ◽  
Friction And Wear ◽  
Physical And Mechanical Properties ◽  
Magnetron Deposition ◽  
Nickel Chromium ◽  
High Microhardness

A number of experiments were conducted to measure the physical and mechanical properties of multielement coatings. To apply CrNiTiFeCu coatings on a nickel-chromium substrate, the technology of magnetron deposition in an atmosphere of argon or nitrogen was used. The results of measurements of the microhardness as well as the coefficients of friction and wear resistance of the applied CrNiTiFeCu thin films are presented. The findings indicate that the studied samples show a high microhardness and wear resistance. Consequently, there is a possibility to extend the lifespan of mechanisms and machines parts.

scholarly journals Microstructural evolution during austempering of a ASTM A-532 CLASS III type high chromium white cast iron undergoing abrasive wear

2017 ◽  
Vol 26 (46) ◽  
Author(s):  
Oscar Fabián Higuera-Cobos ◽  
Jeison Bucurú-Vasco ◽  
Andrés Felipe Loaiza-Patiño ◽  
Mónica Johanna Monsalve-Arias ◽  
Dairo Hernán Mesa-Grajales
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Cast Iron ◽  
Chemical Composition ◽  
Abrasive Wear ◽  
Retained Austenite ◽  
White Cast Iron ◽  
Abrasive Wear Resistance ◽  
Class Iii ◽  
High Chromium

This paper studies the influence of variables such as holding temperatures and times during austempering of High Chromium White Cast Iron (HCWCI), with the following chemical composition: Cr 25 %, C 3 %, Si 0.47 %, Mn 0.74 % and Mo 1.02 %. The aim of the austempering was to modify the percentage of retained austenite and its correlation to abrasive wear resistance under different conditions.Microhardness tests, SEM-EDS and XRD were performed to determine mechanical properties, chemical composition, and type of carbides and microstructures present, respectively. The tests complied with the ASTM G-65 standard. Results showed that the best performance against abrasion was achieved for austempering at 450 ºC with holding time of 6 hours.

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