TY - JOUR
T1 - Evaluation of multi-layered graphene nano-platelet composite coatings for corrosion control part I - contact potentials and gas permeability
AU - Richards, C.A.J.
AU - Glover, C.F.
AU - Williams, G.
AU - McMurray, H.N.
AU - Baker, J.
PY - 2018/5/15
Y1 - 2018/5/15
N2 - The electronic and diffusion-blocking properties of graphene nano-platelets (GNPs) are quantified with a view to understanding their action as (possible) additives to anti-corrosion coatings. Platelet size and thickness are determined by SEM and BET specific surface area measurements. A Scanning Kelvin probe is used to show that a contact potential of up to 1.2V develops between GNP particles and various metal substrates: silver, copper, iron and zinc. A novel photochemical method is used to show that oxygen permeation rates through a PVB-GNP (polyvinylbutyral) composite coating decrease by over an order of magnitude as GNP volume fraction increases to 0.056.
AB - The electronic and diffusion-blocking properties of graphene nano-platelets (GNPs) are quantified with a view to understanding their action as (possible) additives to anti-corrosion coatings. Platelet size and thickness are determined by SEM and BET specific surface area measurements. A Scanning Kelvin probe is used to show that a contact potential of up to 1.2V develops between GNP particles and various metal substrates: silver, copper, iron and zinc. A novel photochemical method is used to show that oxygen permeation rates through a PVB-GNP (polyvinylbutyral) composite coating decrease by over an order of magnitude as GNP volume fraction increases to 0.056.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-85044307841&partnerID=MN8TOARS
UR - https://www.scopus.com/pages/publications/85044307841
U2 - 10.1016/j.corsci.2018.03.016
DO - 10.1016/j.corsci.2018.03.016
M3 - Article
SN - 0010-938X
VL - 136
SP - 285
EP - 291
JO - Corrosion Science
JF - Corrosion Science
ER -