Comparative study of the effect of anodizing and of cladding followed by anodizing on the cyclic strength of D16T sheet material

Karlashov, A. V.; Gainutdinov, R. G.; Pankov, A. T.

doi:10.1007/bf00728385

Cited by 2 publications

(1 citation statement)

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“…The contribution of surface cracking to fatigue has been shown to depend on the type of anodising process employed and the thickness of the oxide film produced [10], the base substrate material [5], and the presence of residual stresses after sealing [11]. A reduction to fatigue life of up to 30 % is commonly observed during stress-life (S-N) testing of the most deleterious types of anodising.…”

Section: Anodising and Fatiguementioning

confidence: 99%

Fatigue and fracture assessment of toxic metal replacement coatings for aerospace applications

Cree

Devlin

Critchlow

et al. 2010

Transactions of the IMF

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The use of corrosion resistant, and adhesion promoting films and coatings is established industrial practice for many fatigue sensitive components and structures. However, recent environmental legislation restricting the use of a range of toxic heavy metals and their derivative processes, such as chromic acid anodising (CAA), has meant that a number of new coatings systems and pretreatments are currently being developed to replace the traditional processes still in use. Typical of these new systems are the boric acid-sulphuric acid anodising (BSAA) process which can be modified to provide excellent adhesive bonding properties; the sulphuric acid anodising process, which includes an additional electrolytic phosphoric acid deoxidizing stage (EPAD) to produce a duplex oxide layer, and the recently patented ACDC sulphuric acid anodising process which produces a two layered oxide film which can be tailored to produce different porosity volume fractions within each layer. This communication reports the preliminary findings of a study carried out to assess the fatigue response of Al2618:T6 aluminium alloys to these new processes. In contrast to CAA anodising, the initial results indicate that the EPAD and ACDC processes do not appear to have a significant affect on fatigue.

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Section: Anodising and Fatiguementioning

confidence: 99%