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Graphene Oxide (GO) Based Nanocoatings

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The large interest in graphene-based materials and other carbon-based polymorphs and nanomaterials are truly far-reaching. The industrial scale and possibility of applying these to advanced manufacturing and commercial application have resulted in high throughput synthesis and lower costs. There is primary interest on their electrical and thermal conductivity properties. However other applications are based on their ability to form very stable colloidal complexes. This talk will focus on the class of graphene (G) and graphene oxide (GO) nanomaterials that have been prepared with high loading in polymer matrices and ultrathin films to result in: anti-corrosion coatings semiconductor thin films patterning and anti-microbial properties. We describe the preparation of very stable dispersions that can be used for nanopatterning in films as well as anti-corrosion-superhydrophobic coatings. Interestingly by preparation of colloidal particles that can be stabilized at liquid-liquid and air-liquid interfaces functional Janus type nanoparticles can be prepared which have interesting uses in dispersants rheological modifiers and smart fluids. An important consideration is their use as anti-corrosion additives and the importance of nanostructuring.

Product Number: 51319-13525-SG

Author: Rigoberto Advincula

Publication Date: 2019

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Role of Metallographic Characterization in Failure Analysis – Case Studies

Product Number: MPWT19-14379

Author: Syed Ahsan Ali

Publication Date: 2019

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Conducting a materials failure analysis requires a carefully planned series of steps intended to
arrive at the cause of the problem. Consistent with the current trend towards better accountability
and responsibility, failure analysis purpose has been extended in deciding which party may be
liable for losses, be they loss of production, property damage, injury, or fatality [1]. Hence it
increases the importance of proper implementation of characterization tools in failure analysis to
rightly identify the failure mode.
Present work discusses a few case studies to shed light upon the importance of the metallurgical
characterization tools and techniques in identification of correct failure mode. Some typical case
studies where metallography plays a very important role have been discussed, such as improper
welding joints which led to premature failure, sensitization and stress corrosion cracking in S.S.,
improper heat treatment and forging indicated the microstructures which led to the premature
failure. These cases are examples of only a few laboratory based investigations which justify that
without metallography it is not possible to diagnose the causes of premature failures.
Generally, examination of failed components commence with the low-power stereomicroscope
whereas hand-held magnifying lenses are still in wide use by experts to study fractures mostly
limited now for field purpose [2]. Metallographic examination typically is performed after nondestructive
and macroscopic examination procedures while using the light optical microscopy
which helps to assess the failure mode with respect to material defects, shortcomings in
processing, metallurgical changes etc. Since light optical microscopy has limited value for direct
observation of fracture surfaces (more limited for metals than non-metals), with still more factual
information can be gathered by scanning electron microscopy at higher magnification.

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Microstructural characterization and Corrosion-wear properties of Graphene oxide/ Polytetrafluoroethylene Coatings for Geothermal Drilling Applications

Product Number: 51321-16474-SG

Author: Gifty Oppong Boakye/Danyil Kovalov/Erlend Oddvin Straume/Beatrice Alonso Rodriguez/Danyil Kovalov/Sigrun Nanna Karlsdottir

Publication Date: 2021

$20.00

Available for download

00398 CORROSION PROCESSES IN THE PRESENCE OF MICROBIOLOGICALLY DEPOSITED MANGANESE OXIDES

Product Number: 51300-00398-SG

ISBN: 00398 2000 CP

Author: P.Linhardt

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Graphene Oxide (GO) Based Nanocoatings

Role of Metallographic Characterization in Failure Analysis – Case Studies

Microstructural characterization and Corrosion-wear properties of Graphene oxide/ Polytetrafluoroethylene Coatings for Geothermal Drilling Applications

00398 CORROSION PROCESSES IN THE PRESENCE OF MICROBIOLOGICALLY DEPOSITED MANGANESE OXIDES

Association for Materials Protection and Performance