scholarly journals Technology of wear resistance increase of surface elements of friction couples using solid lubricants

2017 ◽  
Vol 858 ◽  
pp. 012019
Author(s):  
A P Morgunov ◽  
V B Masyagin ◽  
V V Derkach ◽  
N A Matveev
Keyword(s):  
Wear Resistance ◽  
Solid Lubricants ◽  
Resistance Increase

scholarly journals Enhanced Wear Behaviour of Spark Plasma Sintered AlCoCrFeNiTi High-Entropy Alloy Composites

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2225 ◽  
Author(s):  
Martin Löbel ◽  
Thomas Lindner ◽  
Thomas Lampke
Keyword(s):  
Wear Resistance ◽  
High Hardness ◽  
Solid Lubricants ◽  
Wear Behaviour ◽  
High Entropy Alloy ◽  
Surface Protection ◽  
High Entropy ◽  
Production Route ◽  
The Coefficient Of Friction ◽  
Spark Plasma

High hardness and good wear resistance have been revealed for the high-entropy alloy (HEA) system AlCoCrFeNiTi, confirming the potential for surface protection applications. Detailed studies to investigate the microstructure and phase formation have been carried out using different production routes. Powder metallurgical technologies allow for much higher flexibility in the customisation of materials compared to casting processes. Particularly, spark plasma sintering (SPS) enables the fast processing of the feedstock, the suppression of grain coarsening and the production of samples with a low porosity. Furthermore, solid lubricants can be incorporated for the improvement of wear resistance and the reduction of the coefficient of friction (COF). This study focuses on the production of AlCoCrFeNiTi composites comprising solid lubricants. Bulk materials with a MoS2 content of up to 15 wt % were produced. The wear resistance and COF were investigated in detail under sliding wear conditions in ball-on-disk tests at room temperature and elevated temperature. At least 10 wt % of MoS2 was required to improve the wear behaviour in both test conditions. Furthermore, the effects of the production route and the content of solid lubricant on microstructure formation and phase composition were investigated. Two major body-centred cubic (bcc) phases were detected in accordance with the feedstock. The formation of additional phases indicated the decomposition of MoS2.

scholarly journals Wear resistance increase in friction surfaces of spherical journal bearings by finish plasma strengthening

2016 ◽  
Vol 1 (8) ◽  
pp. 42-48
Author(s):  
Александр Горленко ◽  
Aleksandr Gorlenko
Keyword(s):  
Wear Resistance ◽  
Chemical Precipitation ◽  
Journal Bearings ◽  
Antifriction Coating ◽  
Surface Strengthening ◽  
Resistance Increase ◽  
Nano Coating ◽  
Simultaneous Activation ◽  
Friction Surfaces ◽  
Distinguishing Features

The technology of finish plasma strengthening (FPS) with the multi-layer nano-coating of the Si-O-CN system as applied to the friction surface strengthening in spherical journal bearings is considered. This method relates to the processes of tubeless chemical precipitation of coatings at atmosphere pressure with the use of volatile fluids of element-organic compounds and gas environment with the simultaneous activation of a surface by electroarc plasma. The essence and distinguishing features of FPS are analyzed. Tribological characteristics of an applied wear resistant antifriction coating are investigated which stipulate for wear resistance increase in spherical journal bearings.

scholarly journals Wear resistance increase of sealings of mud end of pump

2021 ◽  
Vol 2094 (5) ◽  
pp. 052038
Author(s):  
I V Karnaukhov ◽  
A S Lunev ◽  
M D Pankiv ◽  
V I Afanasov ◽  
S P Dunaeva
Keyword(s):  
Wear Resistance ◽  
Working Conditions ◽  
Drilling Pump ◽  
Resistance Increase ◽  
Drilling Technology

Abstract In this paper, the qualification and the principle of operation of mud pumps are considered. The analysis of the malfunction of the hydraulic part of the pump is also considered. The importance of the work is due to the fact that it was proposed to introduce a support and sealing part of the cuff made of a material of different hardness. The working conditions of the drilling pump from the adopted drilling technology are also considered. An experiment was conducted with the help of which the dependence of the degree of wear of the seal on time was revealed, depending on the material. The importance of the work is due to the fact that the introduction of the support and sealing part of the cuff from a material of different hardness was proposed.

Comparative study of different solid lubricants towards friction stability in a non-asbestos disc brake pad

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Baskara Sethupathi P. ◽  
Chandradass J.
Keyword(s):  
Wear Resistance ◽  
Testing Machine ◽  
Synergetic Effect ◽  
Solid Lubricants ◽  
Metal Sulfides ◽  
Disc Brake ◽  
Mechanical And Thermal Properties ◽  
Brake Pad ◽  
Content Type ◽  
Brake Pads

Purpose This study aims to compare the influence of different solid lubricants on the friction stability of a non-asbestos disc brake pad. Design/methodology/approach Three brake pads were developed using three lubricants, namely, non-asbestos brake pad with sulfide mix (NASM), non-asbestos brake pad with bismuth sulfide (NABS) and non-asbestos brake pad with molybdenum disulfide (NAMO). Sulfide mix was indigenously developed by physically mixing friction modifiers, alkaline earth chemicals and various metallic sulfides homogeneously dispersed in graphite medium. The physical, chemical, mechanical and thermal properties of brake pads were characterized as per industrial standards. The tribological performances were studied using the Chase testing machine as SAE-J661-2012. The worn surface of the pads was studied using scanning electron microscope to analyze the dominating wear mechanism. Findings NASM was excellent in fade as well as wear resistance. NABS was better from a wear point of view, but fade resistance was moderate despite its higher cost. NAMO fared average in fade and wear despite its excellent dry lubricating properties. NASM was excellent in terms of fade as well as wear resistance. Originality/value Among the selected metal sulfides, the indigenously developed sulfide mix was better than the other two sulfides, which indicates that the synergetic effect of metal sulfides was always preferable to the individual sulfides.

Development of manufacturing technology of nanostructured ceramic choke

2020 ◽  
pp. 34-38
Author(s):  
K.B. Rustamova ◽  
◽  
V.M. Shamilov ◽  
I.A. Habibov ◽  
E.G. Hajiyev ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Gas Production ◽  
Oil Wells ◽  
Manufacturing Technology ◽  
The Other ◽  
Resistance Increase ◽  
Nanostructured Ceramic ◽  
Operational Life ◽  
Discharge Gas ◽  
Oil Gas

Currently, ceramic chokes are used for the adjustment of fluid discharge (gas) in the structures of production trees in oil wells of oil-gas production departments. The metals, plastic masses and other structural materials are used for the manufacturing. It was defined that compared to the other details of production tree the resource of these chokes are significantly less. For the increase of their operational life as the material the usage of nanostructured chokes, the manufacturing technology and the application results are offered. With the purpose of wear resistance increase of chokes, the manufacturing technology was improved and nanostructured chokes usage recommended. Nanostructured chokes were tested in 386 wells overall and showed high results.

Wear-Resistance Increase of Friction Surfaces of Steel Machine Parts by Electro-Mechanical Hardening

2019 ◽  
Vol 49 (11) ◽  
pp. 800-805
Author(s):  
A. O. Gorlenko ◽  
S. V. Davydov ◽  
M. Yu. Shevtsov ◽  
D. A. Boldyrev
Keyword(s):  
Wear Resistance ◽  
Resistance Increase ◽  
Steel Machine ◽  
Machine Parts ◽  
Friction Surfaces

Mechanical and Tribological Properties of Nylon 1212 Modified with Brown Corundum Ash and Solid Lubricants

2011 ◽  
Vol 295-297 ◽  
pp. 1573-1577 ◽  
Author(s):  
Gao Liang Zhang ◽  
Qing Xiang Zhao ◽  
Min Ying Liu ◽  
Peng Fu ◽  
Yi Bo Yu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Environmental Pollution ◽  
Tribological Properties ◽  
Tribological Property ◽  
Solid Lubricants ◽  
Screw Extruder ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite ◽  
Twin Screw

Brown Corundum Ash(BCA) was used to modify nylon 1212(PA1212), which is produced during the production of electric fused brown corundum alumina and will causes serous environmental pollution if it is not recycled. In order to improve the tribological property of PA1212 composites, Graphite, MoS2 and PTFE were used. The composites were prepared by a twin-screw extruder through melt intercalation. The mechanical properties and the wear resistance of the PA1212/Brown Corundum Ash/graphite/MoS2/PTFE composite were studied. The shearing area of composite and the worn surfaces were examined by scanning electric microscope (SEM).

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