A unique Corrosion Mapping Microscope
and Profilometer from CMC Ltd
SPECIFICATIONS and TERMS & CONDITIONS
CorMap is a computer-controlled scanning corrosion microscope utilising
the principle of a scanning reference electrode. An electrochemical probe
(typically 100 m m diameter) is automatically scanned across the specimen,
producing a corrosion sites map. Both potential and current maps are
produced. BOTH vertical and horizontal components of potential and current
are collected, unlike the SVET instrument which gives only the vertical current,
and no potential data. The unit assesses unpainted alloy or painted metal
performance in specific environments.
Monitors performance of ferrous and non-ferrous metals, homogeneous and
heterogeneous alloys, composites with metallic phases, cermets.
Suitable for research and for materials selection for the following industries:
oil, process, chemical, water treatment, paint and other coatings, construction
A unique feature is an automatic height sensor ensuring proximity while
allowing a non-flat surface to be scanned (e.g. a weld bead). This feature
also eliminates any need for leveling the specimen before scanning and gives
ease of use - results are not operator-dependent.
The instrument is computer-controlled and high resolution corrosion data
from a specified precise area of a specimen immersed in an electrolyte is
A real-time two-dimensional coloured electrochemical potential plot is produced on the monitor screen during the scan, to follow progress.
Profilometer mode: A simultaneous (or separate) profile scan can be performed.
Scan area: Up to 40x40 mm. The (operator selectable) x or y movement is 1.25 microns minimum and the maximum is 40 mm. A larger scan area can be provided on request (please enquire about additional costs). Step resolution is 1.25 microns (enquire for smaller resolutions).
Multiple scans: Up to 9 scans can be performed fully automatically at different operator-preset times, on the same precise specimen location. The probe is automatically held away from the scanned zone during any waiting periods.
The scanning reference electrode corrosion microscope is versatile and easy-to- use. The electrode arrangement used is highly sensitive and also gives high resolution, as seen from example pictures supplied on a CD. The background noise level is well below 1 microvolt (see examples on CD).
There are two modes of use:
this is the classic mode, successfully used for level specimens. It is faster than the fully automatic mode (described below) as there is no time taken in adjusting the probe height. The scan height can be pre-set.
Automatic mode: this is fully automatic and once started, the system runs without any attention being needed. This mode has a sensitive sensor, which lifts the probe up and down over a weld or a paint blister, while taking readings.
Operation: Precision micrometer-driven baseplate with specimen tray for electrolyte (e.g. NaCl solution), controlled by PC computer to any ordinate on the x,y,z axes. x, y, z coordinates are listed on the screen along with the corrosion map in real-time during the run. Scan steps can be pre-set to any size down to 1.25 microns (enquire for smaller resolutions).
Several data file formats are automatically and simultaneously produced, giving a choice of plotting programmes for the user.
All of these plot formats are also supplied for the CURRENT mode and the PROFILOMETER mode output
Advantages of CorMap over SVET vibrating electrode equipment :
(1) The equipment has a fully automatic height-adjusting probe, contouring over non-flat specimens and thus requires no pre-run levelling. Thus results are not operator-dependent.
Please enquire: info@cmc.Ltd.uk
(Note: CMC reserves the right to change prices without notice, unless specifically quoted).
Terms and conditions:
The hardware and software are guaranteed for one year. No guarantee is given for misuse or for spillages, or for moving parts due to excessive wear due to over-weight objects being placed on the moving tray (maximum weights will be specified).
After the guarantee period, the unit is designed to allow the user to repair the unit locally, as construction is modular and the use throughout of industry-standard components facilitates easy replacement of parts if needed. Or CMC can carry out any necessary repairs but will charge for costs of parts plus labour and carriage. CMC has many years of experience in scanning electrode techniques, our first publication on this topic being in 1991. We have 15 years' experience with scanning reference electrodes and CMC Ltd supply advanced equipment which produces the example pictures on this website, including the powerful CMC graphics programme (used for most of the pictures), rotatable in two axes in 1-degree steps.