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linear polarization resistance

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003139
EISBN: 978-1-62708-199-3
... normally ignites. The oxidation rate of magnesium in oxygen increases with temperature. At elevated temperature (approaching melting), the oxidation rate is a linear function of time. Cerium, lanthanum, calcium, and beryllium in the metal reduce the oxidation rate below that of pure magnesium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003130
EISBN: 978-1-62708-199-3
... strength. Leveling-off usually occurs in 6 months to 2 years, after which the rate becomes approximately linear at a low rate. In rural atmospheres the weight-loss rate may be less than 0.025 μm/year (0.001 mil/year). In industrial locations, rates vary from ∼0.75 to 2.75 μm/year (0.03 to 0.11 mil/year...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... current density determination by Tafel extrapolation, potentiodynamic measurement of the polarization resistance, electrochemical impedance measurement, and potentiostatic deaeration. Tests combining corrosion and mechanical forces, such as fretting corrosion tests, environment-assisted cracking tests...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... determining elements such as phosphorus, sulfur, tungsten, tin, and boron, which are not normally determined by atomic absorption. Other analytical characteristics include a wide linear working range, low limits of detection, and freedom from chemical interferences. Spectral interferences are a serious...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... procedure to deal with stress by determining maximum values through stress transformation is described. The article provides the stress analysis equations of typical component geometries and discusses some of the implications of the stress analysis relative to failure in components. It focuses on linear...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005431
EISBN: 978-1-62708-196-2
... on the mathematical principles of solving differential equations. It also reviews linear structural problems to illustrate the concept of the FEMs. partial differential equation meshed-solution method finite-element method finite-difference method boundary-element method ENGINEERING...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003835
EISBN: 978-1-62708-183-2
... corrosion rates, as discussed in Ref 19 . One of these methods, polarization resistance, involves polarizing the specimens a few millivolts above and below the open-circuit potential and measuring the current response. The data are plotted using linear scales, and the slope of the potential versus current...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003825
EISBN: 978-1-62708-183-2
... temperatures to 1400 °C (2550 °F) and at pressures ranging from less than 1 to over 40 atm (100 to 4050 kPa) ( Ref 18 ). The reaction was found to be initially parabolic, with a transformation to a linear rate after a period of time. Increasing the temperature not only increases the rate of oxidation of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003026
EISBN: 978-1-62708-200-6
..., but it is not a linear relationship. Typically, the test is run on a 3.2 mm (0.125 in.) thick sample, and the value is calculated by dividing the number of volts required for breakdown by 125 and reporting it in the specified units. However, at thicknesses on the order of 0.50 mm (0.020 in.) or less...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003824
EISBN: 978-1-62708-183-2
... substantial. The kinetics of oxygen uptake can be divided into three regions as a function of time: a linear region where oxygen dissolves without oxide formation, a parabolic region associated with the formation of a protective NbO 2 layer and NbO growing into the metal, and another linear region where the...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006028
EISBN: 978-1-62708-172-6
...., alkylene oxide, styrene) provides the benefits of PDMS with minimum deficiencies. Attachment of the organic moieties either along the siloxane chain (pendant) ( Fig. 7 ) or at the terminus (linear) ( Fig. 8 ) affects the organic compatibility, polarity, and orientation of the siloxane in an applied coating...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003818
EISBN: 978-1-62708-183-2
... pressures of 50 to 500 torr (6.7 to 67 kPa) ( Ref 23 ). The rate varied greatly from specimen to specimen at any one temperature but was apparently linear under all conditions. The variability was attributed to crystal orientation in the oxide film, which was in apparent agreement with the results of other...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001296
EISBN: 978-1-62708-170-2
... is the determination of polarization resistance, R p . This method is based on the fact that the cathodic or anodic current density change is approximately linear with the polarization in the range near the corrosion potential ( Ref 11 , 12 ). These relationships can be described by: (Eq 5...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... opportunities to improve operating processes and procedures related to the management of system integrity. Industry experience with corrosion-resistant alloys of steel, copper, and aluminum is reviewed. The article ends with a discussion on monitoring and preventing microbiologically influenced corrosion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
...-resistant insulation Density, g/cm 3 2.3–2.5 3.1–3.9 2.5–2.7 2.7–2.9 3.5–3.8 2.34 Water absorption, % 0.0 0.0 0.0 0.0 0.0 0.0 Coefficient of linear thermal expansion from 20–700 °C, 10 −6 /°C 5.0–6.8 5.5–8.1 8.6–10.5 11 3.5–5.5 1 Safe operating temperature, °C 1000 1350–1500...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
... ignites. The oxidation rate of magnesium in oxygen increases with temperature. At elevated temperature (approaching melting), the oxidation rate is a linear function of time. Cerium, lanthanum, calcium, and beryllium in the metal reduce the oxidation rate below that of pure magnesium. Beryllium...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006269
EISBN: 978-1-62708-169-6
... wear and frictional properties of the alloy. Linear wear, as tested with the three roller-taper method, diminishes after nitriding. The specimen nitrided at the highest aforementioned temperature withstands only a portion of the friction test, after which the wear rapidly increases. In contrast to this...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
..., coefficient of linear thermal expansion, heat deflection temperatures (HDT), creep moduli, creep relaxation, degree of cure, viscoelastic behavior, and dilatometric properties. Long-term temperature resistance is the temperature at which the part must perform for the life of the device. One of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003067
EISBN: 978-1-62708-200-6
... Abstract This article reviews the applications of traditional glasses in architecture, transportation, construction, houseware, containers, and fibers. It also describes uses of specialty glasses for aerospace and military applications, biomedical and dental applications, chemical-resistant...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003823
EISBN: 978-1-62708-183-2
... zirconium. The delayed hydride cracking of zirconium is also described. The article provides information on the resistance of zirconium to various types of corrosion, including pitting corrosion, crevice corrosion, intergranular corrosion, galvanic corrosion, microbiologically induced corrosion, erosion...