scholarly journals Tribological investigation of multilayer CrN/CrCN/TaN films deposited by close field unbalanced magnettron sputtering

2019 ◽  
Vol 58 (1) ◽  
pp. 271-279 ◽  
Author(s):  
Erkan Bahce ◽  
Nese Cakir
Keyword(s):  
Wear Test ◽  
High Hardness ◽  
Scratch Test ◽  
Adhesion Properties ◽  
Cocrmo Alloy ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Pin On Disc ◽  
Pin On Disk ◽  
Wear Tests

AbstractCrN/CrCN/TaN multilayer films were deposited onto the CoCrMo alloy substrates at different number layers as two, four and 8 layers by close-field unbalanced magnetron sputtering method. Microstructure and the tribo-logical properties of the films were characterized by XRD, SEM, pin-on-disk wear test, scratch test, micro hardness. CrN/CrCN/TaN multilayer coatings exhibited good adhesion properties on the CoCrMo alloy substrate. A very high hardness value of 60 GPa was obtained for 8 multilayered coating. As a result of the pin-on-disc wear tests, it was found that the tribological properties of the CoCrMo alloy were enhanced by coating its surface with this architecture by using close-field unbalanced magnetron system with used parameters.

Microstructure and Properties of Low Temperature Deposit CrxN Using Unbalanced Magnetron Sputtering

2007 ◽  
Vol 353-358 ◽  
pp. 1720-1723
Author(s):  
Ming Dong Bao ◽  
Xue Bo Xu ◽  
Hai Lin Sun ◽  
Dennis Teer ◽  
Jia Wen He
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Scratch Test ◽  
Wear Loss ◽  
Ion Plating ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Pin On Disc ◽  
Magnetron Sputter ◽  
Scratch Track

CrxN coatings are deposited on the substrates with low temperature using a Teer UDP 550 Close Field Unbalanced Magnetron Sputter Ion Plating system (CFUBMSIP). The effect of applied power on Cr targets related to sample temperature is studied. When the applied power of Cr targets is lower than 1.1KW, the depositing temperature could be controlled at about 180°C. Scratch test shows no coating detachment at the end of scratch track up to 85N load. All results of Rockwell-C indentation indicate that CrxN coating holds good bonding strength. Pin-on-disc tests are performed to evaluate wear resistance of the coatings and no any wear loss can be detected after 6000s and 1800s of running. XRD profile demonstrates that the coating deposited in this study is CrxN.

Mechanical and Tribological Properties of W(100-x)%Cx% Coatings Deposited by DC Magnetron Sputtering

2015 ◽  
Vol 642 ◽  
pp. 184-189
Author(s):  
Yan Liang Su ◽  
Yueh Feng Lin
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Magnetron Sputtering ◽  
X Ray Diffraction ◽  
Mechanical And Tribological Properties ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Pin On Disc ◽  
Dry Conditions ◽  
Coating Microstructure

W(100-x)%Cx% coatings with different tungsten and carbon contents were deposited by unbalanced magnetron sputtering. The microstructures and mechanical properties of the W(100-x)%C x% coatings was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), nanoindentation and adhesion testing techniques. The tribological performance of the coatings was investigated using a pin-on-disc trobometer under dry conditions. Experimental results indicated that coating microstructure, mechanical properties and wear resistance varied according to the tungsten and carbon contents of the coatings. The W72%C28% coating had the highest hardness/elastic modulus (H/E) ratio. In the ball-on-disc wear tests, it was found that the W72%C28% coating exhibited the best wear resistance.

Transparent Pin Wear Test on Thin-Film Magnetic Disk

1995 ◽  
Vol 117 (2) ◽  
pp. 297-301 ◽  
Author(s):  
Youichi Kawakubo ◽  
Yotsuo Yahisa
Keyword(s):  
Thin Film ◽  
Wear Debris ◽  
Wear Test ◽  
Video Camera ◽  
Video Monitoring ◽  
Friction Measurement ◽  
Magnetic Disks ◽  
Bulk Hardness ◽  
Pin On Disk ◽  
Wear Tests

Pin-on-disk wear tests on thin-film magnetic disks were performed using transparent materials. Quartz glass (QG), transparent zirconia (TZ), sapphire (SA), and synthesized diamond (DI) were used as pin materials. In addition to friction, sliding condition and pin wear were continuously monitored with video camera. Simultaneous friction measurement and video monitoring showed that friction dropped when wear debris intruded between pin and disk surfaces. Pin wear, from the measured diameter of wear scar on spherical pins, increased in the order of DI, SA, QG, and TZ. This order of pin wear does not coincide with that of the pin bulk hardness. Disk lifetime increased in the order of TZ, QG, SA, and DI, and the smaller the pin wear, the longer the disk lifetime.

Modeling Abrasive Wear for Polymers Using Intersecting Scratching Technique

2005 ◽  
Author(s):  
Mark Chong Wai Lup ◽  
Sujeet K. Sinha ◽  
Seh Chun Lim
Keyword(s):  
Abrasive Wear ◽  
Wear Debris ◽  
Steel Surface ◽  
Scratch Test ◽  
Wear Performance ◽  
Wear Rates ◽  
Pin On Disc ◽  
Pin On Disk ◽  
Disk Test

This paper aims to model abrasive wear for polymers using intersecting scratching technique. Scratch test and pin-on-disc test were conducted on five different polymers. Wear debris generated by intersecting scratching test was compared and correlated with the specific wear rates of the same polymers in a pin-on-disk test using ground steel surface as the counterface. It is the purpose of this paper to establish that an intersecting scratching test can be used as a means to qualitatively and quantitatively characterize wear performance of polymers.

scholarly journals Design of Wear-Resistant Diecast AlSi9Cu3(Fe) Alloys for High-Temperature Components

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 55 ◽  
Author(s):  
Giulio Timelli ◽  
Alberto Fabrizi ◽  
Simone Vezzù ◽  
Alessandro De Mori
Keyword(s):  
High Temperature ◽  
High Hardness ◽  
Wear Resistant ◽  
Fe Alloys ◽  
High Temperature Components ◽  
Alloy Softening ◽  
Pin On Disk ◽  
Iron Manganese ◽  
Image Analysis Techniques ◽  
Wear Tests

Type AlSi9Cu3(Fe) alloy has been modified by alloying with iron, manganese, and chromium elements to develop wear-resistant diecast hypoeutectic Al–Si–Cu alloys that can be applied for high-temperature applications. Several alloys have been produced by varying iron, manganese, and chromium levels (0.80, 1.00, 1.20 wt.% for Fe; 0.25, 0.40, 0.55 wt.% for Mn, and 0.06, 0.10 wt.% for Cr). Brinell hardness measurements and pin-on-disk wear tests have been conducted from room temperature up to 200 °C. The microstructural changes that occurred with the different alloying levels have been quantitatively examined by metallographic and image analysis techniques. The results showed how the increasing content of the Fe, Mn, and Cr promoted the precipitation of both primary and secondary Fe-enriched particles, mainly with polyhedral, blocky, and star-like morphologies. These compounds showed high hardness that is not affected by chemical composition and morphology variation. At high temperatures, the diecast alloys always showed lower average hardness and wear resistance, especially at 200 °C; however, a greater amount of Fe-rich particles can compensate the alloy softening.

A Comparative Study of the Results Obtained through Different Types of Wear Tests

2012 ◽  
Vol 730-732 ◽  
pp. 951-956
Author(s):  
Ana García ◽  
Laura Ferreiro ◽  
Angel Varela ◽  
José Luís Mier ◽  
Carolina Camba ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Comparative Study ◽  
Wear Test ◽  
Operating Conditions ◽  
Test Standards ◽  
Different Types ◽  
Dry Sand ◽  
Pin On Disk ◽  
Wear Tests

Wear is one of the most worrying problems in industry; it affects many production sectors. Therefore, the wear resistance of materials must be assessed in order to predict their response and anticipate possible failures. Maintenance could then be scheduled accordingly. Due to the large number of situations where wear is important, one of the main complications in tribology is that it is difficult to replicate in a laboratory the precise conditions of service. Thus, there is a need to choose between different kinds of tests to simulate actual conditions. However, this aim is difficult to achieve, as variables and conditions of service are numerous. In this situation, it is neither practical nor possible to have as many test devices in the laboratory as real possibilities. It is necessary to find a test that can be extrapolated to many possible situations. An important question is if the results obtained with different configurations simulated in the laboratory are good equivalents or, on the contrary, the choice of method has an influence and to what extent the latter case is true. In addition, it should be noted that wear test standards mention how difficult it is to reproduce results and how they are influenced by operating conditions In this paper, three wear tests methods are studied- the pin-on-disk, dry sand/rubber wheel test and wet sand/rubber wheel- in order to find a relationship between the results obtained by them. Furthermore, different techniques are analysed to establish, if possible, which ones are more likely to achieve more reliable results.

scholarly journals Phytoliths can cause tooth wear

2020 ◽  
Vol 17 (172) ◽  
pp. 20200613
Author(s):  
Fernando Rodriguez-Rojas ◽  
Oscar Borrero-Lopez ◽  
Paul J. Constantino ◽  
Amanda G. Henry ◽  
Brian R. Lawn
Keyword(s):  
Sliding Wear ◽  
Animal Species ◽  
Artificial Saliva ◽  
Wear Test ◽  
Tooth Wear ◽  
Wear Testing ◽  
Third Body ◽  
Pin On Disc ◽  
Molar Teeth ◽  
Wear Tests

Comparative laboratory sliding wear tests on extracted human molar teeth in artificial saliva with third-body particulates demonstrate that phytoliths can be as effective as silica grit in the abrasion of enamel. A pin-on-disc wear testing configuration is employed, with an extracted molar cusp as a pin on a hard disc antagonist, under loading conditions representative of normal chewing forces. Concentrations and sizes of phytoliths in the wear test media match those of silica particles. Cusp geometries and ensuing abrasion volumes are measured by digital profilometry. The wear data are considered in relation to a debate by evolutionary biologists concerning the relative capacities of intrinsic mineral bodies within plant tissue and exogenous grit in the atmosphere to act as agents of tooth wear in various animal species.

Sliding Friction and Wear Characteristics of Grade 410 Martensitic Stainless Steel

2014 ◽  
Vol 592-594 ◽  
pp. 1346-1351 ◽  
Author(s):  
Rakesh K. Rajan ◽  
Hemant Kumar ◽  
Shaju K. Albert ◽  
T.R. Vijayaram
Keyword(s):  
Stainless Steel ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Martensitic Stainless Steel ◽  
High Hardness ◽  
High Strength ◽  
Nuclear Industry ◽  
Wear Rates ◽  
Pin On Disc ◽  
Pin On Disk

Present work aimed at investigating the friction and wear of martensitic stainless steel of grade 410. This steel is used in nuclear industry for various moving components due to its high strength and moderate corrosion resistance. Properties of this material depend upon the heat treatment to which subjected to. The wear tests by sliding were performed on a pin on disk apparatus whose pin is in normalized and tempered condition. The counter face disc was machined from EN24 steel of high hardness in nature. The AISI 410 stainless steel wear rates were evaluated using Pin-on Disc Tribometer at various load and sliding speed. The worn pins were investigated by using scanning electron microscopy and surface profilometer.

scholarly journals Tribological Properties on P91 Alloy Steel Treated with Normalizing & Carburizing Process

2019 ◽  
Vol 9 (1) ◽  
pp. 2078-2082 ◽  
Keyword(s):  
Heat Treatment ◽  
Wear Test ◽  
High Hardness ◽  
Hardness Test ◽  
Variable Load ◽  
X Ray Diffraction ◽  
P91 Steel ◽  
Treatment Processes ◽  
Pin On Disc ◽  
Alloy Steels

An Experimental analysis was undertaken to analyze the changes in the Mechanical Properties and Microstructure of P91 steel, subjected to Normalizing and Carburizing heat treatment Processes keeping in mind the potential capabilities of P91 steel as the base metal due to its wide applications in Boilers manufacturing. P91 is a type of alloy steels having high hardness and wear resistance suface. The heat treatment processes were carried out in the present experimental procedure at constant temperature and for different timings like 60 minutes, 90 minutes and 120 minutes. Hardness of the specimen was tested by using Rockwell Hardness test. A pin on disc machine was used to conduct the wear test. Wear test was carried out on treated P91 steel on various parameters like variable load and constant speed. The Microstructural results are concluded with SEM (Scanning Electron Microscope) and XRD (X-Ray diffraction) techniques

Microstructure and Properties of AlSn20 Coating Deposited via Magnetron Sputtering

2015 ◽  
Vol 816 ◽  
pp. 277-282
Author(s):  
Qiao Qin Guo ◽  
Jian Ping Li
Keyword(s):  
Magnetron Sputtering ◽  
Sputtering Deposition ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Wear And Friction ◽  
Pin On Disc ◽  
Alloy Microstructure ◽  
Bearing Alloy ◽  
Deposition Techniques

In view of the present reality of sputtered plating bearings imported in our country, unbalanced magnetron sputtering deposition techniques was used to fabricate AlSn20 anti-friction coating on aluminum bearing alloy. Microstructure characterization of the coating was performed by SEM. Micro-hardness testing of Coating were measured with a Vickers indenter. Adhesion testing was carried out with a scratch tester. Wear and friction tests were performed with a pin-on-disc tribometer. The results revealed that the AlSn20 anti-friction coating (bias voltage in the range of-60V~-100V) showed finer crystal, better corrosion resistance (Ecorr=-1.25V), higher hardness (up to 80HV0.025), better adhesion with substrate (up to 35N), and lower friction coefficients down to 0.15.

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