Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"Tribological properties"”.
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Tribological properties of gradient-density hydrogel surfaces
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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Surface Engineering of Zirconium for Tribological Properties Enhancement
… industries, mainly due to the combination properties of neutron transparency, excellent corrosion resistance and good biocompatibility. However, with a base hardness of about 200 HV, zirconium and its alloys have poor tribological properties and find limited applications in other fields of …
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Ion plated carbon films and their tribological properties
The conventional ion plating technique is described and the physicalmechanism and energies involved in the technique reviewed. The triode(assisted discharge) ion plating is studied and it is shown to increasethe ionization several times.Ion plating with a hollow cathode discharge is studied. The …
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The Mechanical and Tribological Properties of Ion Implanted Ceramics
The mechanical properties of ion implanted ceramics are primarily a function of the radiation damage produced by the implantation process. For crystalline ceramics this damage is chiefly nuclear displacements, though for glasses electronic effects have also been observed. In this study a number of …
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A molecular dynamics study of the tribological properties of diamond like carbon
… with steel counterfaces. We show that the tribological properties of DLC in dry sliding friction are heavily dependent on both the structure of the DLC as well as the passivation layer that forms on the sliding counterfaces under different environmental conditions, and that when optimizing …
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The correlation of chemical structure to tribological properties of polyimide thin films
… and highly polar side groups, to differences in tribological properties. The wear test results showed lowest wear for the polyimide with the flexible oxygen linkage. The wear mechanism was deduced to be fatigue since wear did not occur immediately and a strong correlation was noted between wear …
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Towards Sustainable Braking: Effects of Alternative Ingredients on the Tribological Properties of Friction Materials
… The new ingredients were chosen based on their properties while also considering aspects related to an eventual industrial application. The first approach involved the use of a natural ingredient, rice husk, as an ingredient in the composition of friction materials; whereas the second approach …
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Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel
… study aims to characterize the mechanical and tribological properties of three different polymeric coatings—polyurethane, 2K, and melamine—deposited on steel by analyzing the hardness, elastic modulus, and scratch resistance of each coating. This was accomplished by making indentation and …
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Characterization of Nano-Porous Si-Cu Composites to Enhance Lubricant Retention Impacting the Tribological Properties of Sliding Surfaces
<p>As the expectations for modern machinery's tribological and thermal performances continue to rise, the retention of lubricant on the contact surfaces of their sliding components becomes an increasingly important issue. Friction and wear cause heat-related failures which lead to catastrophic …
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Development of a non-living model system for cell membranes and investigation of its mechanical and tribological properties
While our exposure to nanomaterials (NMs) has increased with advancements in nanotechnology, understanding harmful effects of such materials on humans is still wanting. Here we have proposed and developed a non-living model system for cell membranes which is suitable for elucidating interactions …
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Tribological Behaviours Influenced by Surface Coatings and Morphology
… Al alloy for improving the wear resistance and tribological properties of the Al alloy. Effects of surface roughness and sliding velocity on the coefficient of friction (COF) of PEO coatings were particularly investigated in different tribological tests including low speed pin-on-disc tests, …
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Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering
… sputtering (HPPMS) have shown to improve tribological properties of coatings. These coatings offer increased wear and oxidation resistance, which may facilitate the use of more economical materials in harsh applications. This study demonstrates the use of novel forms of HPPMS, namely …
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Influence of oxidation treatment on the corrosion behaviour of Ti-6AI-4V alloy
… is a greatly desired alloy due to its attractive properties and exceptional corrosion resistance. Surface modifications such as thermal oxidation (TO) and oxygen boost diffusion hardening (OBDH) improve the tribological properties and wear resistance of Ti-6Al-4V. However, surface modification …
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The improvement of the wear performance of the Ti-64 alloy using the oxygen boost diffusion treatment
… process which can greatly improve the tribological properties of titanium components. This report deals with the oxygen diffusion treatment of Ti-6Al-4V (Ti-64), the most commonly used titanium alloy, to rank various treatment conditions based on their ability to increase the surface …
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Effect of silicon nano particles added to the polymeric coatings
… of this research was to compare mechanical and tribological properties of a coatingto the same coating with added nano silica. The sample coating for this project was bis-ureasil which was synthesized using 1:1 equivalent ratio of bis (3-trimethoxysilyl-propyl) amine (BTMSPA) (318.0g) and IPDI …
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Synthesis and Characterization of Ag and Cu doped DLC Thin Films for Anti-microbial Applications
… implants due to their excellent mechanical and tribological properties. However, high internal stresses and poor adhesion to metallic substrates limit their application. Metal doping, particularly with silver (Ag) and copper (Cu), has been explored to address these issues due to their inherent …
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Characterization and modification of electrospun fiber mats for use in composite proton exchange membranes
… porosity, specific surface area, and mechanical properties of the mat allows one to tailor electrospun mats for specific applications. Despite the widespread and rapidly growing use of electrospinning in the fabrication of novel nanomaterials, there are no simple, universal methods of predicting, …
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