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John Charles Walmsley

Senior Research Scientist

John Charles Walmsley

Senior Research Scientist

John Charles Walmsley
Phone: 982 83 914
Mobile: 982 83 914
Department: Materials and Nanotechnology
Office: Trondheim

publications and responsibilities

Publications

Publication

Transmission Electron Microscope studies of aluminium alloys - invited presentation

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+S18482

Aluminium is an important material with a wide range of applications including packaging, building and aerospace. Improvements in properties and alloy design require detailed microstructural and microchemical information for which Transmission Electron Microscopy (TEM) is an essential tool. For exam...

Year 2010
Type Presentation
Publication

The evolution and oxidation of carbides in an Alloy 601 exposed to long term high temperature corrosion conditions

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+S17281

Inconel 601 alloy has been studied after 2years exposure in a commercial methanol plant. Carbon penetration leads to precipitation of nanometer-scale M23C6 and coarser M7Cr3, tens of microns below and within several microns of the alloy surface respectively, as predicted by thermodynamic calculation...

Year 2010
Type Journal article
Publication

The structure and impurities of hard DC anodic layers on AA6060 aluminium alloy

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+S9735

Hard anodic layers produced under DC conditions in sulphuric acid on a commercial AA 6060 aluminium alloy have been characterised by electron microscopy and secondary ion mass spectroscopy (SIMS). Once exposed during anodising, alpha-Al(Fe, Mn)Si intermetallic particles start to corrode in the elect...

Year 2008
Type Journal article
Publication

Nature of segregated lead on electrochemically active AlPb model alloy

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+S5220

The segregation of Pb on model binary AlPb alloys, containing 20 and 50 ppm Pb, as a result of heat-treatment in air at 600 degrees C and its influence on electrochemical properties have been studied. Enrichment of metallic Pb, concentrated toward the oxide side of the oxide-metal interface, was con...

Year 2007
Type Journal article