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Showing 1 to 17 of 17 for “"fretting corrosion"”.
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Fretting corrosion and contact resistance of edge-card connectors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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The effects of thin polymeric surface films on fretting corrosion
… is to determine if polymer films can prevent fretting between two metals, and if they can, what the protection mechanisms are. This research is a part of fretting corrosion studies currently funded by the Army Research Office. Four thermoplastic polymers were tested for their effectiveness. …
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An experimental study of fretting corrosion at a bearing/cartridge interface
A device has been built to study fretting corrosion phenomena at a bearing/cartridge interface. The research is a continuation of a larger study funded by the Naval Research Laboratory. Its main objective is to determine the important parameters influencing fretting and fretting corrosion in …
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An Experimental Study of Fretting Corrosion and Its Influence on Fatigue Strength
Made available in DSpace on 2014-12-09T17:13:42Z (GMT). No. of bitstreams: 1 6801839.pdf: 6043410 bytes, checksum: 622ff1d1b6351087d70bce0c6a28430e (MD5) Previous issue date: 1967
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A vibration analysis of a bearing/cartridge interface for a fretting corrosion study
… to examine the important parameters influencing fretting corrosion in rolling element bearings. The bearing examined was a 320 size, deep grooved, ABEC 7 ball bearing used in a Navy ship service motor-generator unit. Three axes of acceleration signatures were simultaneously recorded from the …
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The effects of simulated inflammatory conditions on the corrosion and fretting corrosion of CoCrMo alloy
<p>In vivo corrosion of CoCrMo alloy and its potential adverse effects on the body have been recognized as major concerns in recent years. While the underlying concepts of general and mechanically-assisted corrosion have been well documented, recent report of inflammatory cell-induced corrosion …
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Design, Material and Surgical Assembly Effects on Fretting Corrosion Behavior of Modular Tapers in Orthopedic Implants
<p>Mechanically assisted crevice corrosion (MACC) has become a significant problem in the orthopedic device industry, particularly in modular devices with metal-on-metal (MoM) tapered interfaces. Oxide film abrasion, leading to fretting corrosion in the presence of a crevice, accelerates the …
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Novel Methods and Self-Reinforced Composite Materials for Assessment and Prevention of Fretting Corrosion in Modular Tapers
… to prevent the onset of mechanically assisted corrosion in modular taper devices.</p> <p>A study of the seating and taper locking mechanics of modular taper samples was conducted, and the effect on taper engagement strength of seating load, loading rate, taper moisture, and taper …
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A study of the effect of frequency, amplitude, and load on fretting corrosion of instrument ball bearings
… measured before and after vibration to determine fretting corrosion damage to the bearings. The load, frequency of vibration, and amplitude of vibration were each varied to determine their effects on the fretting corrosion damage. No lubrication was used on the bearings, and the test atmosphere …
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The effects of load, frequency, slip amplitude, humidity and film thickness of polyvinyl chloride on fretting corrosion
… and film thickness of polyvinyl chloride on fretting corrosion. In particular, this study describes the effects of these parameters on the polymer film life and also on the wear of the metal surfaces after metallic contact had occurred. The two levels that were used for each parameter are: …
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The use of thin polymeric coatings to prevent fretting corrosion and metallic contact in steel-on-steel systems
… coatings to prevent metallic contact and fretting corrosion in steel-on-steel systems. Ten polymer types were chosen for study: polymethylmethacrylate (PMMA), polytetrafluoroethylene (PTFE), polyimide (PI), polyvinylidene fluoride (PVDF), polyvinylidene chloride (PVDC), polyvinyl chloride …
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The effects of load and humidity on friction and life of polymeric coatings used to prevent fretting corrosion
… of five polymer coatings used to protect against fretting corrosion. Chlorine and non-chlorine containing polymers were used in this research to see if the large humidity effect seen in a previous study with polyvinyl chloride is strictly a chlorine related phenomenon. The five polymers used were …
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The vibration of instrument ball bearings in a controlled environment and the effect of the resulting fretting corrosion on bearing torque
Fretting corrosion is a form of wear which occurs at the interface of two contacting solid materials as the result of small, relative vibratory motion. It is generally identified by the presence of a red oxide, Fe203. Previously, the majority of the investigators studied the fretting corrosion …
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Understanding the Structure-property Relationships of Solid-state Additively Manufactured Stainless-steel Coatings
… part failure due to the influence of abrasion, corrosion, sliding wear-corrosion (i.e., tribo-corrosion), and fretting corrosion degradation. As a method to mitigate these handicaps, cold spray additive manufacturing (CSAM, or more frequently referred to as cold spray (CS)) has proved to be a …
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Friction and degradation of rubber coatings under fretting conditions
… mechanisms of thin rubber coatings used as fretting corrosion inhibitors. Two elastomers, polyurethane and styreneethylene-butylene (SEBS), were investigated. The mechanisms of wear were studied by analyzing wear scars with optical microscopy. Friction mechanisms were investigated using …
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The effect of molecular weight on the behavior of polystyrene coated steel disks under fretting conditions
… surfaces to prevent and/or prolong the onset of fretting corrosion, but the properties that make a polymeric coating effective and the means by which a coating fails are unknown. The purpose of this study was to determine the effect of molecular weight, casting solvent, and amplitude of motion on …
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The effect of film thickness on the behavior of polystyrene-coated steel disks under fretting conditions
… on a polystyrene coating used to prevent fretting corrosion in a steel-on-steel system. The polystyrene coating was applied to a 1045 steel disk and fretted against a 52100 steel ball. Two sets of experiments were employed. The first set evaluated film life by using seven different film …