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Ignition Of Metals And Alloys In Gaseous Oxygen By Frictional Heating
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Book Synopsis Ignition of Metals and Alloys in Gaseous Oxygen by Frictional Heating by : FJ. Benz
Download or read book Ignition of Metals and Alloys in Gaseous Oxygen by Frictional Heating written by FJ. Benz and published by . This book was released on 1986 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ignition of metals and alloys have been investigated by rotating the end of a hollow cylinder against an identical stationery cylinder on a common axis (frictional heating) in gaseous oxygen. A ranking criterion that measures the resistance of metals and alloys to ignition is discussed. It consists of the power per unit area required for ignition, conveniently expressed as the product of contact pressure P and average linear velocity ̄v. Data are presented that demonstrate that materials that are high in nickel and copper require greater Pv products for ignition (more resistant to ignition) than materials that are high in iron. Aluminum and titanium alloys are shown to require the lowest Pv products for ignition. The effects of varying surface velocity, contact pressure, coefficient of friction, and oxygen pressure on P ̄v products required for ignition are discussed. The results indicate that P ̄v product required for ignition increases as surface velocity increases, as contact pressure decreases, and as the coefficient of friction decreases. Increasing oxygen pressure will cause the P ̄v product required for ignition to decrease at low pressures and increase at high pressures. In some cases, the relative ranking of materials based on P ̄v products will also change as conditions are varied.
Book Synopsis Review of Frictional Heating Test Results in Oxygen-Enriched Environments by : MV. Gunaji
Download or read book Review of Frictional Heating Test Results in Oxygen-Enriched Environments written by MV. Gunaji and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction is a known ignition source for metals and polymers in oxygen systems. This paper provides a review of the test results currently in the literature and an update of frictional ignition tests recently conducted at WSTF. Most of the results are presented in terms of the Pv product required for ignition (Pvign), where P is the normal load divided by the rubbing area and v is the relative linear velocity between the samples. Rankings based on Pvign are presented for similar and dissimilar pairs of metal alloy test samples. A comparison of the Pvign in liquid oxygen (LOX) and the PVign in gaseous oxygen (GOX) indicates that materials are approximately three to four times more difficult to ignite in LOX than in GOX. A discussion of the application of the data to material selection is also presented.
Book Synopsis Ignition of Metals in Oxygen by : E. L. White
Download or read book Ignition of Metals in Oxygen written by E. L. White and published by . This book was released on 1966 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report deals with the ignition of metals in oxygen and oxygen- containing atmospheres. The ignition of metals is reviewed from the viewpoints of (1) methods that have been used to study behavior, (2) experimental values that have been obtained, and (3) the status of theories that permit the calculation of ignition temperatures. A number of experimental methods have been used to determine the ignition temperature of solid metals and alloys in oxygen gas, air, various mixtures of inert gases with oxygen, and liquid oxygen. In addition to the input of energy from heat sources, the effects of electrical- energy input, and various types of mechanical-energy input on the ignition temperature have also been reported. Experimental values of ignition temperature are discussed for alloys of titanium, aluminum, copper, nickel, iron, cobalt, magnesium, tin, and lead; stainless steels, silver and silver solders, and other metals and alloys are also discussed.
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Joel M. Stoltzfus
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Joel M. Stoltzfus and published by ASTM International. This book was released on 1993 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Dennis W. Schroll
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Dennis W. Schroll and published by ASTM International. This book was released on 1988 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceeding held at Churchill College, Cambridge, England, April 1987. A reference for both the skilled and the uninitiated in the concepts and practices for the design and maintenance of all types of oxygen systems. Cov five areas: ignition of metals, nonmetal ignition, material selection for oxygen.
Book Synopsis A Symposium Sponsored by ASTM Committee G-4 on Compatibility and Sensitivity of Materials in Oxygen-Enriched Atmospheres, Washington, DC, 23-24 April 1985 by : Michael A. Benning
Download or read book A Symposium Sponsored by ASTM Committee G-4 on Compatibility and Sensitivity of Materials in Oxygen-Enriched Atmospheres, Washington, DC, 23-24 April 1985 written by Michael A. Benning and published by ASTM International. This book was released on 1986 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Joel M. Stoltzfus
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Joel M. Stoltzfus and published by ASTM International. This book was released on 1989 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Proceedings of the Fourth International Symposium on [title] held in Las Cruces, NM, April 1989. Presents 22 papers on the special hazards associated with the use of oxygen. Contains recent literature on flammability and compatibility of materials in oxygen, design of oxygen components and systems, and test method development and evaluation. Illustrated. Annotation copyrighted by Book News, Inc., Portland, OR.
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres by :
Download or read book Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres written by and published by ASTM International. This book was released on 1983 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Ting C. Chou
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Ting C. Chou and published by ASTM International. This book was released on 1997 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : David B. Hirsch
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by David B. Hirsch and published by ASTM International. This book was released on 2006 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Dwight D. Janoff
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Dwight D. Janoff and published by ASTM International. This book was released on 1995 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : B. E. Newton
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by B. E. Newton and published by ASTM International. This book was released on 2003 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methane Ignition by Frictional Impact Between Aluminum Alloys and Rusted Steel by : Donald H. Desy
Download or read book Methane Ignition by Frictional Impact Between Aluminum Alloys and Rusted Steel written by Donald H. Desy and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Friction-Induced Ignition of Metals in High-Pressure Oxygen by : J. Kazaroff
Download or read book Friction-Induced Ignition of Metals in High-Pressure Oxygen written by J. Kazaroff and published by . This book was released on 1988 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work reported addresses metal ignition from the possible rubbing of oxygen pressurized hydrostatic bearings and turbine blade tips operating in a high-pressure oxygen environment. Friction heating tests in oxygen at pressures of 1 to 300 atm were conducted at surface speeds of 10 to 33 m/s. Materials selections were based on their burn factor (heat of combustion/thermal diffusivity). Test results presented include the rubbing of like material pairs spanning a wide range of burn factors and dissimilar metal pairs having significantly different burn factors. The test results indicated that the burn factor can provide a useful guide for selecting metals for use in oxygen where rubbing can occur. The burn factor is suitable for rank ordering most, but not all, materials in their resistance to ignition. Most materials became more difficult to ignite under the high-speed rubbing test conditions when the oxygen pressure increased from 60 to 300 atm. However once they ignited, the burning was more extensive. A mechanism that explains these observations and thermal instabilities as evidenced by self-induced heating and cooling cycles under linearly increasing rubbing loads is postulated. It is supported by experimental data.
Book Synopsis A Study of Spontaneous Ignition of Metals by : Fred E. Littman
Download or read book A Study of Spontaneous Ignition of Metals written by Fred E. Littman and published by . This book was released on 1960 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a study of the reactions occurring in the spontaneous ignition of zirconium and titanium (and their alloys), with emphasis on the former. Conditions required for spontaneous ignition, including the effects of certain impurities, surface conditions, and composition of the atmosphere around the metal were investigated. In addition, the mechanism of ignition was studied by following the thermal history of the reactions during the first few milliseconds.
Book Synopsis Fundamentals of Metals Ignition in Oxygen by : JM. Stoltzfus
Download or read book Fundamentals of Metals Ignition in Oxygen written by JM. Stoltzfus and published by . This book was released on 1997 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ignition is associated with the thermal energy input into the system occurring at a rate faster than thermal energy is being lost to the surroundings. The solution of an idealized model for ignition at a plane metal surface characterizes the material in terms of the property thermal inertia, kpc. The thermal inertia for six metals Al, Cu, Fe, Mg, Ni and Ti, at their ignition temperatures is compared to the relative burn resistance of the metals in terms of BRmp, BRbp threshold pressure, resistance to ignition by particle impact and frictional heating ignition, pv. Thermal inertia is in agreement and appears to be suitable property for characterizing metals ignition. In addition, considerations for relaxing the assumptions associated with the idealized model are described and thermal inertia is still a valid characterization for the material.
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Michael A. Benning
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Michael A. Benning and published by ASTM International. This book was released on 1983 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
