Engineering Requirements in the Automotive Industry for Metals Operating at High Temperatures

2009 ◽  
pp. 169-169-32
Author(s):  
A. L. Boegehold ◽  
J. B. Johnson
Keyword(s):  
High Temperatures ◽  
Automotive Industry

Studies of the Influence of High Temperatures and Aggressive Media on the Performance Properties of O-Rings Used in the Automotive Industry

2021 ◽  
Vol 410 ◽  
pp. 587-592
Author(s):  
Gulgena D. Shakirova ◽  
Natalya V. Romanova ◽  
Lenar N. Shafigullin
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
High Temperatures ◽  
Automotive Industry ◽  
High Heat ◽  
High Heat Resistance ◽  
Performance Properties ◽  
Air Atmosphere ◽  
Heat Stable ◽  
Fluorosilicone Rubber

The paper provides the results of the studies on the influence of high temperatures and aggressive media on the performance properties of O-rings having one name but made by different manufacturers. O-rings by supplier No. 1 are made from fluorosilicone rubber, and O-rings by supplier No. 2 are made from fluororubber. The analysis of O-rings showed that the color of O-rings made from fluorosilicone rubber changed and their physical mechanical properties decreased after operation when subjected to G-energy Si-OAT and G-energy SNF coolants. The comparative analysis of TGA curves of O-rings showed that O-rings made from fluororubber were more heat stable than O-rings made from fluorosilicone rubber, i.e. they can withstand higher operating temperatures in an air atmosphere. Fluoroelastomers can recover quickly and are used to manufacture products which should have a high heat resistance during operation and high resistance to aggressive coolants.

Strain rate dependence of adhesive joints for the automotive industry at low and high temperatures

2018 ◽  
Vol 32 (19) ◽  
pp. 2162-2179 ◽  
Author(s):  
G. Viana ◽  
J. Machado ◽  
R. Carbas ◽  
M. Costa ◽  
L. F. M. da Silva ◽  
...  
Keyword(s):  
Strain Rate ◽  
High Temperatures ◽  
Automotive Industry ◽  
Adhesive Joints ◽  
Rate Dependence ◽  
Strain Rate Dependence

In situ REM imaging of surface processes on ceramic bulk crystals from 300 to 1670 K in a conventional TEM

1991 ◽  
Vol 49 ◽  
pp. 660-661
Author(s):  
Z. L. Wang ◽  
J. Bentley
Keyword(s):  
High Temperatures ◽  
Image Resolution ◽  
Atomic Processes ◽  
Crystal Surfaces ◽  
Beam Radiation ◽  
Surface Areas ◽  
Transmission Electron ◽  
Reflection Electron Microscopy ◽  
Gas Reactions

Studying the behavior of surfaces at high temperatures is of great importance for understanding the properties of ceramics and associated surface-gas reactions. Atomic processes occurring on bulk crystal surfaces at high temperatures can be recorded by reflection electron microscopy (REM) in a conventional transmission electron microscope (TEM) with relatively high resolution, because REM is especially sensitive to atomic-height steps.Improved REM image resolution with a FEG: Cleaved surfaces of a-alumina (012) exhibit atomic flatness with steps of height about 5 Å, determined by reference to a screw (or near screw) dislocation with a presumed Burgers vector of b = (1/3)<012> (see Fig. 1). Steps of heights less than about 0.8 Å can be clearly resolved only with a field emission gun (FEG) (Fig. 2). The small steps are formed by the surface oscillating between the closely packed O and Al stacking layers. The bands of dark contrast (Fig. 2b) are the result of beam radiation damage to surface areas initially terminated with O ions.

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

Mexican practical anthropometry of automotive industry workers

2010 ◽  
Author(s):  
Bustillos Enrique de la Vega ◽  
Karla Lucero Duarte ◽  
Octavio Lopez Millan
Keyword(s):  
Automotive Industry
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