Measurement of Wear and Friction Resistance of Bulk and Coated Materials

2016 ◽  
pp. 273-302 ◽  
Keyword(s):  
Friction Resistance ◽  
Coated Materials ◽  
Wear And Friction

Study on Wear and Friction Resistance of CrTiAlMoN Coatings Deposited by Magnetron Sputtering

2011 ◽  
Vol 413 ◽  
pp. 295-299
Author(s):  
Tao Wang ◽  
Guo Jun Zhang ◽  
Bai Ling Jiang
Keyword(s):  
Carbon Steel ◽  
Magnetron Sputtering ◽  
Adhesive Wear ◽  
High Hardness ◽  
Bearing Steel ◽  
Friction Resistance ◽  
Wear And Friction ◽  
Pin On Disc ◽  
Friction Performance ◽  
Steel Substrates

The present research aims to synthesize a nanoscale multilayer CrTiAlMoN hard coating for the modification of wear and friction performance, as compare to CrTiAlN coatings. CrTiAlMoN coatings were deposited on 1045 carbon steel substrates by magnetron sputtering at different Mo target current. The wear and friction resistance were characterized by pin-on-disc test. When a WC-Co ball was used as the counterpart, the coefficients of friction of CrTiAlMoN coatings were found to decrease with the increase of Mo target current, with the lowest value (0.34) being only one half that of CrTiAlN coating (0.76). The combination of high hardness above 36GPa and low coefficients of friction reduces the specific wear rate of the CrTiAlMoN coatings to only 10% of CrTiAlN coatings. When tested against a bearing steel ball, results demonstrate that the effect of Mo on reducing friction of the CrTiAlMoN coatings is not significant and even negative due to adhesive wear.

Selective Transfer Phenomenon in Copper-Steel Tribological Systems

2009 ◽  
Vol 147-149 ◽  
pp. 558-563 ◽  
Author(s):  
Andrzej Kotnarowski
Keyword(s):  
Metallic Layer ◽  
Tribological Characteristics ◽  
Selective Transfer ◽  
Friction Resistance ◽  
Transfer Phenomenon ◽  
Characteristic Condition ◽  
Wear And Friction ◽  
Railway Traction ◽  
Friction Surfaces

The paper deals with possibility of selective transfer phenomenon generation in couples consisting of materials of railway traction trolley wire and of pantograph slider material. Some examinations are described concerning tribological characteristics evaluation of above couples. The most characteristic condition of selective transfer phenomenon (known also under the name of “Garkunov effect”) is generation of specific protective metallic layer on friction surfaces of both frictionally cooperating elements that minimize wear and friction resistance. Obtained results led to the conclusion that the selective transfer phenomenon was generated in the model friction pairs examined in the frames of presented work. The magnitude of this phenomenon depended on minimal differences in quantities of additives and impurities in copper.

Wear and Friction of Diamondlike-Carbon Coated and Uncoated Steel Roller Bearings Under High Contact Pressure Oil Lubricated Rolling/Sliding Conditions

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
P. A. Dearnley ◽  
A. M. Elwafi ◽  
R. J. Chittenden ◽  
D. C. Barton
Keyword(s):  
Bearing Steel ◽  
Rolling Contact ◽  
Friction Behavior ◽  
Coating Materials ◽  
Research Attention ◽  
Dlc Coatings ◽  
Roller Bearings ◽  
Coated Materials ◽  
Wear And Friction ◽  
Diamondlike Carbon

Diamondlike-carbon (DLC) coatings have received a lot of research attention by physicists and engineers, especially in the past 25 years. Attempts to use such materials in tribological applications have achieved variable success. The rationale for this work was to investigate the wear durability of three types of DLC coatings applied to hardened and tempered bearing steel and subject them to realistic high pressure cyclic loading under oil lubricated conditions for long duration. A thrust bearing design was deployed for this purpose. The wear and friction behavior of the DLC coated materials relative to uncoated materials was compared when using base (additive free) oils and typical autoengine formulated oils. The type of oil used made no difference to the dynamic friction and oil temperature for all the material and oil combinations used. Durability of the coated and uncoated roller bearings was determined by the type of material. For the uncoated bearings, life was limited after very many test cycles (approaching a billion) via classical rolling contact fatigue pitting. For all the DLC coated rollers life was governed by wear of their coatings. In the case of the tungsten doped DLCs (a-C:H:W), these were worn progressively and uniformly via microabrasion, whereas the nondoped ta-C and a-C DLC coatings were principally worn via delamination and tearing. The latter effect was relatively rapid and was considered to be initiated by blistering of the coating, a process that was probably driven by the high elastic energy/internal stress within the nondoped coating materials. The durability to delamination and tearing of the ta-C coatings was slightly lowered in formulated oil compared to tests made in base oil. Overall, for the test conditions used here, there was no apparent benefit in using DLC coatings.

Study on wear and friction resistance of nanocrystalline Fe nitrided at low temperature

Wear ◽  
2011 ◽  
Vol 271 (5-6) ◽  
pp. 653-657 ◽  
Author(s):  
W.P. Tong ◽  
J. Sun ◽  
L. Zuo ◽  
J.C. He ◽  
J. Lu
Keyword(s):  
Low Temperature ◽  
Friction Resistance ◽  
Wear And Friction

Pengaruh Kecepatan Putar Terhadap Hasil Coran pada Metode Pengecoran Sentrifugal dalam Pembuatan Produk Pisau Pakan Ternak dengan Material Ni-Hard1

2019 ◽  
Vol 11 (01) ◽  
pp. 1-7
Author(s):  
Roni Kusnowo ◽  
Kus Hanaldi
Keyword(s):  
Animal Feed ◽  
Centrifugal Casting ◽  
Impact Resistance ◽  
Literature Study ◽  
Gravity Casting ◽  
Friction Resistance ◽  
Optimal Speed ◽  
Mold Making

Animal feed knife is a tool that serves to cut and chop animal feed consisting of grass as the main ingredient with additives such as bran, herbs, centrate, cassava, tofu pulp and others. Therefore, as a cutting tool must have the properties of friction resistance, impact resistance, and have good sharpness, so that the material chosen is Ni-Hard 1. The use of centrifugal casting method was chosen because it has the advantage of being able to make castings with relatively thin thickness this is due to the influence of the centrifugal force on the distribution of metal liquids throughout the cavity in the mold. Case study in this study is the use of centrifugal casting methods as an alternative to gravity casting methods to overcome defects of misruns. This research was conducted to investigate the effect of speed on the formation of castings products. The method that was carried out began with a literature study on centrifugal casting, and continued by determining the material, the temperature of the cast is in the range 1250ºC - 1300ºC, and the type of mold. The next step is to do work drawings, pattern making, mold making, casting processes, fettling processes, and analysis. With variations in speed of 200 rpm, 300 rpm and 400 rpm, it can be seen the optimal speed for making this product. The results of this study obtained optimal speed at a speed of 300 rpm to make good quality of animal feed knife products.

KAISER ALUMINUM ALLOY 4026

Alloy Digest ◽  
2003 ◽  
Vol 52 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Sliding Friction ◽  
High Strength ◽  
Heat Treating ◽  
Kaiser Aluminum ◽  
Friction Resistance

Abstract Kaiser Aluminum alloy 4026 has high strength and good wear resistance, as well as galling resistance. It was developed for sliding friction resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating. Filing Code: AL-385. Producer or source: Tennalum, A Division of Kaiser Aluminum.

Wear and Friction Behavior of Epoxy/MWCNTs Nanocomposites under Dry Sliding Conditions

2013 ◽  
Vol 9 (6) ◽  
pp. 766-772 ◽  
Author(s):  
C. Sabarinathan ◽  
Md. Ali ◽  
S. Muthu
Keyword(s):  
Dry Sliding ◽  
Friction Behavior ◽  
Wear And Friction

Tribotechnical characteristics of hard alloys in sliding friction units

2020 ◽  
pp. 87-97
Author(s):  
K. D. Khromushkin ◽  
B. G. Ushakov ◽  
A. V. Kochergin ◽  
R. A. Suleev ◽  
O. N. Parmenova
Keyword(s):  
Experimental Data ◽  
Sliding Friction ◽  
Heating Temperature ◽  
Hard Alloys ◽  
Friction Units ◽  
Wear And Friction ◽  
Friction Path ◽  
Friction Parameters ◽  
Tribotechnical Characteristics ◽  
Temperature Surface

The paper presents experimental data on the study of the friction parameters of hard alloys in sliding friction units, including the heating temperature, surface roughness, wear and friction coefficient, depending on the duration of the test and the friction path.

Graphene/chitosan/Ag+- doped hydroxyapatite triple composite fiber coatings on new generation hybrid titanium composite by electrospinning

2021 ◽  
pp. 002199832110075
Author(s):  
Tuğba Mutuk ◽  
Mevlüt Gürbüz
Keyword(s):  
Hybrid Composites ◽  
Graphene Nanosheets ◽  
Pure Titanium ◽  
Composite Fiber ◽  
Mass Change ◽  
Coated Materials ◽  
Nano Fiber ◽  
Hybrid Nanofiber ◽  
New Generation ◽  
Fiber Coatings

In this work, The hybrid hydroxyapatite (HaP), chitosan (CH) and graphene nanosheets (GNS) mixtures were applied by electrospinning on the surface of GNS and Si3N4 (SN) binary powder reinforced hybrid titanium (Ti) metal composites surface to improve composite biosurface functionallity. The surfaces of coated materials were characterized and antibacterial tests were carried on for their suitability in the industry by performing artificial body fluid tests. The hybrid nano fiber coatings formed a homogeneous structure on the composite. According to bioactivity tests and microstructure analysis, it was seen that HaP, which has the best results in the change of pH (pH= 11.80) values. The lowest mass change (0.0005 g) was observed on the 10th day of pure titanium. The highest mass change (0.0210 g) was obtained as on the HaP coated hybrid titanium composite. According to the antibacterial test result the hybrid nanofiber containing silver (Ag+) doped HaP on Ti composites showed the best antibacterial property aganist the E.coli. The fabricated electrospin coated hybrid composites can be a potantial candidate for dental, orthopedic implant applications and tissue engineering.

Effects of ceramic-based CrN, TiN, and AlCrN interlayers on wear and friction behaviors of AlTiSiN+TiSiN PVD coatings

2021 ◽  
Author(s):  
Doğuş ÖZKAN ◽  
M. Alper YILMAZ ◽  
Mirosław SZALA ◽  
Cenk TÜRKÜZ ◽  
Dariusz Chocyk ◽  
...  
Keyword(s):  
Pvd Coatings ◽  
Wear And Friction
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