Aluminum Corrosion Resistance Improvement
An aluminum alloy was coated with Minimox® solution and put into service in an oxidizing atmosphere. The assembly was exposed to a hot acidic atmosphere with cyclic corrosion conditions. After long term exposure, the cross sections below were obtained by an outside laboratory. The Minimox® nanocrystalline treatment demonstrated corrosion resistance under these hot, acidic conditions. The customer tested over 60 aluminum coating and alloy systems, and Minimox® solution and only one other system were deemed to have passed the test requirements.
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Untreated Al Alloy
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Minimox® solution-coated Al Alloy
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Metal dusting
Extensive metal dusting testing has been conducted through the Materials Technology Institute. Testing was conducted at Argonne National Laboratory; Alloy 601, 600°C, 4286 hrs. Contact our office or see our Technical Bulletin for full details of the experiments.
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Untreated
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Minimox-treated and preoxidized
Substantially improved surface integrity
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Carbon Ingress
A 330 furnace belt was coated with Minimox and oxidized 850°C for 100 hours. It was then exposed to pack carburization at 593°C, 450 hours, and compared to an untreated belt. See our Technical Bulletin for details of the experiments.
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Untreated belt showing carbon ingress on cross section.
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Treated belt showing no degradation during graphite exposure.
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