Adhesion and Tribological Properties of Ag and Ag/Ti Films on Zro2 Ceramic Substrates After Heat Treatment at 250°C

1991 ◽  
Vol 239 ◽  
Author(s):  
J. H. Hsieh ◽  
O. O. Ajayi ◽  
A. Erdemir ◽  
F. A. Nichols
Keyword(s):  
Heat Treatment ◽  
Tribological Properties ◽  
Ion Beam ◽  
Negative Effects ◽  
Ceramic Substrates ◽  
Ion Beam Assisted Deposition ◽  
Before And After ◽  
Pin On Disc ◽  
The Relationship ◽  
Ti Films

ABSTRACTAg and Ag/Ti films were deposited on ZrO2 substrates by ion-beam-assisted deposition. Adhesion of these films was measured before and after heat treatment at 250°C in air. The results show that a graded interface between Ag and Ti was necessary for the Ag films to survive the heat treatment. Reciprocating pin-on-disc tests were performed at 150°C after heat treatment to investigate the relationship between adhesion and tribological properties. The failure of Ag and Ag/Ti (without graded interface) films was also observed during wear tests. However, this Ag film failure did not result in negative effects. All three Ag-coated substrates show better tribological behavior.

scholarly journals Effect of Temperature on the Tribological Properties of Selected Thermoplastic Materials Cooperating with Aluminium Alloy

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7318
Author(s):  
Anita Ptak ◽  
Paula Taciak ◽  
Wojciech Wieleba
Keyword(s):  
Aluminium Alloy ◽  
Contact Pressure ◽  
Tribological Properties ◽  
Polymer Materials ◽  
Effect Of Temperature ◽  
Test Results ◽  
Friction Process ◽  
Before And After ◽  
Pin On Disc ◽  
Two Parameters

This article concerns the tribological properties of three selected polymer materials: polyamide PA6, polyethylene PE-HD and polyetheretherketone composite PEEK/BG during sliding against aluminium alloy EN AW-2017A in the presence of hydraulic oil HLP 68. The tests were carried out under contact pressure p of 3.5–11 MPa at ambient temperature T ranging from −20 °C to +20 °C. The dependence of kinetic friction coefficient μk on the two parameters was determined through tribological tests carried out using a pin-on-disc tribometer. A five-level central composite rotatable design (CCRD) was adopted for the experiment. All the test results were statistically analysed. The microhardness of the surface of the polymeric material was measured before and after the friction process. The surface was also examined under SEM. Temperature and contact pressure have been found to have a significant effect on the tribological properties of the tested sliding pairs. Relative to the applied friction conditions, the surfaces after friction showed rather heavy signs of wear.

scholarly journals Effect of heat treatment on the tribological properties of Nickel-Boron electroless coating

2018 ◽  
Vol 27 (47) ◽  
pp. 101
Author(s):  
Sandra Arias ◽  
Maryory Gómez ◽  
Esteban Correa ◽  
Félix Echeverría-Echeverría ◽  
Juan Guillermo Castaño
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Carbon Steel ◽  
Tribological Properties ◽  
Tribological Performance ◽  
Dry Sliding ◽  
Electroless Coating ◽  
Before And After ◽  
Properties Of Materials

Nickel-Boron autocatalytic coatings are widely used in several industries to improve mechanical properties of materials such as hardness and wear resistance. Tribological properties were evaluated in Ni-B autocatalytic coatings deposited on AISI/SAE 1018 carbon steel before and after a heat treatment at 450 °C for one hour. Tribological tests were carried out by dry sliding, using a load of 5 N and a sliding speed of 0.012 m/s, in a homemade ball-on-disk tribometer, which followed ASTM G99 standard. According to the tribological evaluation, the heat treatments applied to Ni-B coatings improved their tribological performance. This research corroborates that by applying an adequate heat treatment, hardness and wear resistance of Ni-B coatings can be improved significantly.

EVALUATION ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE FRACTIONATED PALM OLEIN AT DIFFERENT LOADS USING PIN-ON-DISC MACHINE

2015 ◽  
Vol 75 (11) ◽  
Author(s):  
N. Nuraliza ◽  
S. Syahrullail ◽  
M.N. Musa
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Tribological Properties ◽  
Palm Olein ◽  
Pure Aluminum ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Hydraulic Oil ◽  
Before And After ◽  
Pin On Disc

The use of vegetable oil-based lubricant as a lubricant in various applications has increased and it is eyed by the industry due to its superior tribological properties, besides possessing the potential to replace petroleum-based lubricants. Palm olein is one of alternative lubricants that could be suitable and attractive as a lubricant to be studied due to its advantages and large production in the country. Thus, in this study, the behavior of palm olein characteristics was investigated by using pin-on-disc experiment, in which a hemispherical pin was loaded against the rotating grooved disc. The experiments via sliding were performed with pin-on-disc tester using pure aluminum as the material for hemispherical pin and SKD11 for disc. The test was implemented by dropping continuous flow of palm olein as lubricating oil on sliding surface at different loads applied, which were 10N, 50N, and 100N. The wear rate of the pin and the friction coefficient were also investigated. Moreover, the surface roughness before and after the experiment was analyzed as well. All the results obtained were compared to hydraulic oil and engine oil-SAE 40. From the analysis, the friction coefficient acquired from lubricated with palm olein was the lowest for both conditions. The wear rate obtained for the three lubricants increased from 10N to 100N load for palm oil, but decreased for hydraulic and engine oil-SAE 40. Meanwhile, the wear rate obtained for lubrication with hydraulic oil showed the lowest value compared to Engine oil-SAE 40 and double fractionated palm olein. 

A study on functionally graded HA coatings processed using ion beam assisted deposition with in situ heat treatment

2006 ◽  
Vol 200 (20-21) ◽  
pp. 6111-6116 ◽  
Author(s):  
A. Rabiei ◽  
B. Thomas ◽  
C. Jin ◽  
R. Narayan ◽  
J. Cuomo ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Ion Beam ◽  
Functionally Graded ◽  
Ion Beam Assisted Deposition ◽  
In Situ Heat Treatment

Trapping of Hydrogen in Carbon Nitride Films During or After High Temperature Heat Treatment

2004 ◽  
Vol 854 ◽  
Author(s):  
David C. Ingram ◽  
Asghar Kayani ◽  
William C. Lanter ◽  
Charles A. DeJoseph
Keyword(s):  
Heat Treatment ◽  
Carbon Nitride ◽  
Ion Beam ◽  
Deuterated Water ◽  
Elastic Recoil ◽  
High Temperature Heat Treatment ◽  
Ion Beam Assisted Deposition ◽  
Ultra High Purity ◽  
Magnetron Sputter Deposition ◽  
Deuterium Gas

ABSTRACTThin films of carbon nitride deposited by ion beam assisted deposition or by magnetron sputter deposition typically contain a significant fraction of hydrogen, 1–30 atomic percent (at.%). In order to improve the thermal stability of the properties of the films, attempts have been made to minimize the hydrogen trapped during deposition. Such films typically have less than 5 at.% hydrogen. On heating these films in ultra high purity (99.999%) argon, it has been found that above 600°C they start to absorb significant amounts of hydrogen, this despite retaining their mechanical integrity. The composition of the films is determined using Rutherford Backscattering Spectroscopy in combination with Elastic Recoil Spectroscopy for detecting the hydrogen isotopes. In this paper, the possible sources of the hydrogen have been investigated by exposing the samples to deuterated water or deuterium gas during or immediately after the heat treatment.

scholarly journals The Effect of Cooling Rate on Mechanical Properties of Carbon Steel (St 35)

2014 ◽  
Vol 7 (1) ◽  
pp. 109-118
Author(s):  
Jenan Mohammed Nagie
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Carbon Steel ◽  
Cooling Rate ◽  
Experimental Results ◽  
Heat Treated ◽  
Before And After ◽  
Water Media ◽  
The Relationship

This paper is aimed to study the effect of cooling rate on mechanical properties of Steel 35. Specimens prepared to apply tensile, torsion, impact and hardness tests.Many prepared specimens heat treated at (850ºC) for one hour and subsequently were cooled by three different media [Water-Air-furnace] to show the effect of Medias cooling rate on mechanical properties. Microstructures of all specimens examined before and after heat treatment by an optical microscopy.To figure the phases obtained after heat treatment and its effect on the mechanical properties Experimental results have shown that the microstructure of steel can be changed and significantly improved by varying line cooling rate thus, improving one property will effect on the others because of the relationship between all properties.In water media tensile, torsion and hardness improved while impact results reduced. Air media contributed in improving most of the mechanical properties because of grain size homogeneity. At furnace media ductility and impact improved

Influence of nitrogen ion beam assisted deposition of Cr on tribological properties of tool steel NW1

Vacuum ◽  
2003 ◽  
Vol 70 (2-3) ◽  
pp. 411-416 ◽  
Author(s):  
P. Budzynski ◽  
P. Tarkowski ◽  
P. Żukowski ◽  
K. Kiszczak ◽  
W. Kasietczuk
Keyword(s):  
Tool Steel ◽  
Tribological Properties ◽  
Ion Beam ◽  
Ion Beam Assisted Deposition ◽  
Nitrogen Ion

Influence of Heat Treatment on Fracture Toughness and Wear Resistance of Nicral-Zro2 Multilayered Thermal Barrier Coating

2018 ◽  
Vol 37 (5) ◽  
pp. 463-475
Author(s):  
Zibo Ye ◽  
Guanghong Wang
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Wear Resistance ◽  
Xrd Analysis ◽  
Thermal Barrier ◽  
Homogeneous Microstructure ◽  
Barrier Coating ◽  
Before And After ◽  
T Phase ◽  
The Relationship

AbstractThe chemical composition and fracture toughness of thermal barrier coatings (TBCs) before and after heat treatment were characterized, and the cracks around the interface between the coating and the substrate could be successfully eliminated and meanwhile the porosity of the coatings tended to reduce. The XRD analysis revealed the coatings were composed of non-transformable tetragonal t’ phase of ZrO2 and $\gamma $-(Ni, Cr) with minor Ni3Al ($\gamma ^' $) precipitates. Additionally, the relationship between the heat treatment and wear resistance was systematically studied. The results indicated that both the hardness and fracture toughness increased after quenching process. The oxidation wear became more prominent after heat treatment, which probably resulted from the better bonding strength of coatings. Dense and homogeneous microstructure introduced by vacuum oil-quenching improved stabilization of the weight gain during thermal cycle test.

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