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scratch tests

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003282
EISBN: 978-1-62708-176-4
... Abstract This article reviews the origins and development of scratch tests, the experimental configurations used in these tests, and the application of the tests to characterize the mechanical response of materials. It provides information on the measurement of indentation hardness. The article...
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Published: 01 January 2006
Fig. 6 Typical current transient that results during an 80 μm scratch test with a diamond stylus (radius of 20 μm, or 0.8 mil) on a Co-Cr-Mo surface in phosphate buffered saline potentiostatically held at a passivating potential (0 mV SCE) and loaded with a 1.5 GPa contact stress. The scratch More
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Published: 01 January 2006
Fig. 8 Summary of scratch test for Co-Cr-Mo alloy surface demonstrating how the oxide electrochemically reacts to disruption while under potentiostatic control. (a) Peak current variation with contact load (or contact stress). (b) Peak current as a function of applied potential at a fixed More
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Published: 01 January 2003
Fig. 9 Potential versus time plot of scratch test illustrating a possible location of the critical potential, E c , as it relates to the induction time and the repassivation time. Source: Ref 86 More
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Published: 31 December 2017
Fig. 8 Single scratch test across the microstructure of tool steel X153CrVMo12-1. (a) Load increased from left to right. (b) Scratch width in hard phases ( W h ) is less pronounced compared to scratch width in metal matrix ( W m ). (c) Brittle fracturing of larger hard phases and removal More
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Published: 31 December 2017
Fig. 9 Single scratch test across the microstructure of tool steel NiCrBSi alloy reinforced with fused tungsten carbide (FTC). (a) Scratch track across the metal-matrix composite material. (b) Scratch track at the metal-matrix/FTC interface; microploughing and microcutting of the metal matrix More
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Published: 01 January 2000
Fig. 6 Parameters encountered in scratch testing. F T , tangential friction force; F N , normal load; v , scratching speed More
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Published: 01 June 2012
Fig. 6 Typical current transient that results during an 80 μm scratch test with a diamond stylus (radius of 20 μm, or 0.8 mil) on a Co-Cr-Mo surface in phosphate buffered saline potentiostatically held at a passivating potential (0 mV SCE) and loaded with a 1.5 GPa contact stress. The scratch More
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Published: 01 June 2012
Fig. 8 Summary of scratch test for Co-Cr-Mo alloy surface demonstrating how the oxide electrochemically reacts to disruption while under potentiostatic control. (a) Peak current variation with contact load (or contact s). (b) Peak current as a function of applied potential at a fixed contact More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004206
EISBN: 978-1-62708-184-9
... assisted corrosion. The article also explains the scratch test and the in vitro fretting corrosion test. cobalt alloys corrosion fretting corrosion test crevice corrosion cyclic stress mechanically assisted corrosion metallic biomaterials titanium alloys wear fretting motion electrochemical...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
...-scanning, and scratch tests. After a discussion on gear scuffing, information on the material-dependent adhesive wear and factors preventing adhesive wear is provided. adhesive wear coefficient of friction galling metal sliding contacts scoring scuffing seizure scratch tests twist compression...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005653
EISBN: 978-1-62708-198-6
.... It reviews the tests developed to investigate the aspects of mechanically assisted corrosion of metallic biomaterials: the scratch test and the in vitro fretting corrosion test. cobalt-base biomedical alloys electrochemical behavior in vitro fretting corrosion test iron-base biomedical alloys...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003279
EISBN: 978-1-62708-176-4
... of adhesion, friction, and wear test data. It concludes with a description of devices used for testing adhesion, friction, and wear. adhesion testing friction testing scratch testing surface damage wear testing THE SURFACES OF SOLIDS play many different and important roles in technology...
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Published: 01 June 2016
Fig. 10 Influence of treatment condition state on critical loads for layer breakthrough in scratch testing (according to EN 1071-3) and surface hardness (HV 5 ) of aluminum alloy 5083 and spray-formed alloy DISPAL S270. T N = 470 °C (880 °F); t N,eff = 4 h. BM, base material; N, nitrided More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003283
EISBN: 978-1-62708-176-4
... Abstract The article provides a discussion on the parameters influencing abrasive wear and the elements and standards of abrasion wear tests. It emphasizes the general test procedures, advantages, and limitations of various types of abrasive wear testing. Wear testing for scratch wear, dry...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003275
EISBN: 978-1-62708-176-4
... or IRHD testers; scratch hardness tests; and ultrasonic microindentation testing. This article reviews the procedures, equipment, and applications associated with these alternate hardness test methods. miscellaneous hardness test Leeb scale hardness testing scleroscope hardness testing durometer...
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Published: 01 January 2000
Fig. 7 The load dependence of fracture and deformation about scratches made by a Vickers indenter in soda-lime glass. These photographs were taken in tests conducted in the Purdue scratch apparatus. (a) Scratch appears plastic until end of traverse. Load, 120 g. (b) Lateral and median cracks More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003586
EISBN: 978-1-62708-182-5
... methods, frequency modulation methods, electrochemical noise resistance, potential probe methods, cyclic potentiodynamic polarization methods, potentiostatic and galvanostatic methods, electrochemical noise (EN) methods, scratch-repassivation method, and electrochemical impedance spectroscopy (EIS...
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Published: 01 January 2003
Fig. 8 (a) Cross section of the simulated scratch cell. (b) Photograph of an artificial scratch cell modified to make in situ electrochemical measurements to test for self-healing by conversion coatings. Source: Ref 70 More
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Published: 01 January 2003
Fig. 3 Trend of paint delamination of steel products. (a) Cold rolled steel. (b) Hot dip galvanized steel. (c) Galvannealed steel (Fe-Zn alloy). Coating is approximately 25 μm electrophoretic paint with and without phosphate treatment. Artificial damage by Van Laar scratch, scalpel comparable More