Tartaric Sulphuric Anodising - Poeton

Substrates
Apticote 300TSA can be applied to all aluminium
alloys, including those commonly used in aerospace
and defence applications - 2124 (T3), 7175 and
6082.
Surface morphology
In comparison to Chromic Acid Anodised surfaces,
Apticote 300TSA gives a slightly coarser grain
structure, with additional surface porosity. It provides
the optimum adhesion for subsequent paint priming
without compromising the corrosion protection.
Fatigue
Apticote 300TSA is applied to the AIPI 02-01-003
specification. Rotating bar tests have shown that the
fatigue life of TSA treated aluminium alloy samples is
identical to that produced after Chromic Acid
Anodising.
Non Destructive Testing
Liquid Penetrant
Inspection (LPI)
Poeton Laboratory
Poeton offer a comprehensive
non-destructive testing service,
including Liquid Penetrant
Inspection (LPI). All parts are
individually inspected for
cracks, porosity, weld defects
and any manufacturing or
casting imperfections that
might subsequently impair the
TSA step.
We work to a strict Quality Plan, dictated by the
customer Specification, overseen by our laboratory.
Our facilities include:
Optical Microscopy
Scanning Electron
Microscopy
Metallography
Chemical analysis
Atomic Absorption
Technique
Corrosion testing
Adhesion testing
Wear testing
Salt fog cabinet
We are able to undertake all the required analysis for
bath control, fully complying with the specifications –
for instance, acid concentration (to AITM 3.0030) and
dissolved aluminium (by Atomic Absorption).
Our processing capability
Our TSA processing line is fully automated and computer
controlled:
Sizes up to 0.5 metre and 20 kg
Automatic voltage ramping
Precisely controlled sequencing – pre-treatment, TSA,
post-treatment
Bath temperature control to within 1 o C
NDT capable of inspecting parts up to 1 metre long,
and smaller parts at 50 per hour
Painting priming on parts up to 2 metres long and
smaller parts in batches of 200
Painting
TSA processing facility
Poeton have a large paint application facility,
environmentally controlled and using primers that are
chromate free. We can process parts up to 2 metres long
or 50 kg in weight, or batches of smaller parts up to 200 at
a time.
When applied to Apticote 300TSA treated aluminium, the
primer adhesion matches the performance specified in the
ISO 2409 Crosscut Test.
Environmental aspects
Companies like AIRBUS are committed to eliminating
chromates from all treatment process associated with
aircraft parts, including banning the use of Chromic Acid
Anodising. Poeton Apticote 300TSA is completely
chromate free, using only tartaric and sulphuric acid, in
plant that is newly manufactured.
Apart from observing the obvious precautions of working with
strong acids, the two bath constituents are relatively nonhazardous,
and none of the constituents meet the SVHC
criteria of REACH legislation.
Disclaimer
The information contained in this leaflet is intended for guidance only.
Whilst every effort is made to understand the environment in which the
coating is designed to work, success can only be determined by trials
and in-service testing.
NADCAP Accreditation is held by Poeton Industries Ltd with Poeton (Gloucester)
Ltd Accredited for Plasma Spray (coatings) and Chemical processing, and Poeton
(Cardiff) Ltd Accredited for Chemical Processing and NDT
Poeton Industries Ltd,
Eastern Avenue,
Gloucester, GL4 3DN
For more information, please contact our
Sales or Technical Department, (44) 1452
300 500, info@poeton.co.uk
April 2012