.... Therefore, it is expected that these basestock materials will continue to be of increasing interest in the heat treatment industry. However, the fatty ester components containing conjugated double bonds of the triglyceride structure of vegetable oils typically produce considerably poorer thermal oxidative...

...Gabriela Belinato; Lauralice C. F. Canale; George E. Totten Although the quenching performance of various vegetable oils has been reported in the past, reports on the effect of antioxidants on the oxidative stability of these seed oils and on the initial quenching performance are less common...

... to the alloy can be considered as a second order parameter for both corrosion and creep properties. 02 02 2010 10 04 2011 02 06 2011 PWR corrosion oxidation hydrogen pick-up irradiation creep irradiation growth zirconium alloys 2010-05-09 - 2010-05-13 16th International...

... under ASTM D4625 conditions without the presence of antioxidant. Analysis indicates that the majority of the sediment consists of a wide variety of polar oxygenated compounds. These vary considerably in molecular weight. The lower molecular weight species arise due to oxidative cleavage of the methyl...

...L. C. Casteletti; A. Lombardi Neto; G. E. Totten; S. C. Heck; F. A. P. Fernandes Austenitic Fe–Mn–Al–Si–C steel provides excellent cold formability and good oxidation resistance for possible fabrication of resistive elements. In this work, austenitic Fe–31Mn–7.5Al–1.3Si–0.9C steel wire was obtained...

... and vegetable oils is discussed in detail. 10 10 2008 03 07 2009 28 09 2009 vegetable oils quenchants oxidation cooling curve analysis References Serhan , S. , “ The Use of Vegetable Oils in Bio-Based Products ,” Presentation available from National Center...

... is, among others parameters (free growth, creep), strongly driven by corrosion. Oxide layer and hydrides precipitation could both induce an increase of the dimensional parameters. The scope of the present study is, regardless of irradiation effect, to quantify and to understand the separate effects...

...T. Do; M. Saidy; W. H. Hocking The pressure tubes that contain the fuel bundles and the primary coolant within the core of a CANDU heavy-water reactor are fabricated from a Zr-2.5Nb alloy with a complex microstructure. During reactor operation the pressure-tube interior surface is slowly oxidized...

... IIIGA, an oxidative oil thickening engine test now part of ILSAC GF-4 specifications. Sequence IIIGA, a gasoline fueled engine running under severe conditions, is used to condition oils prior to determining TP-1 MRV viscosity, a cold temperature and low shear rate measurement. After Sequence IIIGA...

...T. W. Selby; S. W. Froelicher; James Secrist The importance of oxidation-resistant turbine oils in the various applications in which turbines are used is difficult to understate. Turbines in themselves are very costly energy-converting mechanisms which, among many other applications, provide much...

...Vincent Gatto; William Moehle; Emily Schneller; Thalan Burris; Tyler Cobb; Mark Featherstone A review of current oxidation and deposit bench tests used for the evaluation of engine oil performance will be presented. Some of the more meaningful tests will be utilized to evaluate a number...

... system pressures, and slower deaeration. These conditions will have a tendency to accelerate oxidation/thermal degradation, reduce corrosion protection, and shorten coolant life. In efforts to simulate the increased severity in operating conditions, an accelerated oxidation and corrosion test, using...

...Peter W. R. Smith This paper outlines some of the significant changes in turbine oil oxidative stability requirements over the past five to ten years, and illustrates how these have been met using mineral oil-based products with differing antioxidant systems. It also considers possible future...

...GJ Livingstone; BT Thompson; ME Okazaki One of the primary factors in determining the life and performance of turbine oils is its oxidation stability. Oxidation can cause a host of problems for in-service turbine oils, such as sludge, deposits, lacquer, and varnish formation. There is limited...

...DE Chasan; SR DiFrancesco; M Ribeaud Four turbine oils formulated with varying types and concentrations of antioxidants were aged via D 943 exposure and examined extensively at 1000, 2000, 5000, and 10 000 h. Acid number, Rotary Pressure Vessel Oxidation Test (RPVOT), High Pressure Differential...

...A Sitton; J Ameye; RE Kauffman Antioxidant chemistry is playing an important role in meeting the longer-life and higher temperature performance criteria of modern generation turbine lubricants. Oxidative life assessment is therefore an important parameter as part of today's turbine oil diagnostic...

...VJ Gatto; WE Moehle; TW Cobb; ER Schneller The current turbine oil oxidation bench tests have been in place for many years. Recently, however, the basestocks used to formulate these lubricants have changed significantly. Traditional basestocks, containing high levels of aromatics and sulfur, have...

...G Hunter; J Dickinson; B Herb; R Graham More demanding performance expectations for total joint arthroplasty are driving the development of alternative bearing materials. Oxidized zirconium was developed as an alternative to cobalt-chromium alloy for knee and hip femoral components in order...

...S Abolhassani; R Restani; T Rebac; F Groeschel; W Hoffelner; G Bart; W Goll; F Aeschbach Metal-oxide interfaces of three different materials irradiated in a pressurized water reactor have been analyzed by TEM and AEM. Standard Zircaloy-4, low-tin Zircaloy-4, and Zr-2.5%Nb were used for this study...

... microanalysis to analyze the physical structure of the sample and gather compositional data. A comparison of the micrographs of self-extinguished and quenched samples reveals clear differences in the extent of melted and re-solidified (unreacted) material and the thickness of the oxide layer, highlighting...