2003
DOI: 10.1016/s0257-8972(02)00918-0
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Mechanisms underlying the formation of thick alumina coatings through the MAO coating technology

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Cited by 450 publications
(233 citation statements)
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“…The surface roughness also increased as the coating thickened. The areal density of these craters, on the other hand, has been reported to decrease substantially with increasing process time [1,2]. Matykina et al [3] reported a similar effect with PEO coatings on Ti, although in that case the reduction was less marked.…”
Section: Introductionmentioning
confidence: 97%
See 1 more Smart Citation
“…The surface roughness also increased as the coating thickened. The areal density of these craters, on the other hand, has been reported to decrease substantially with increasing process time [1,2]. Matykina et al [3] reported a similar effect with PEO coatings on Ti, although in that case the reduction was less marked.…”
Section: Introductionmentioning
confidence: 97%
“…They leave characteristic "craters" on the free surface of the growing coating. Sundararajan and Rama Krishna [1] found that the average diameter of such craters (on 7075 Al) increased from 1.3 µm after 1 min to 2.4 µm after 30 min. The surface roughness also increased as the coating thickened.…”
Section: Introductionmentioning
confidence: 98%
“…For the growth of PEO coatings, the most commonly accepted mechanism is attributed to an outward-inward growth mechanism [17][18][19][20][21]. The presence of inward growth has been confirmed by 18 O element labeling [22], which is regarded as a process of repetitive breakdown and passivation of the barrier layer at the coating/substrate interface [13].…”
Section: Introductionmentioning
confidence: 98%
“…This is on a par with the generic observation of an increasing coating thickness with increasing AC voltage 11 . The POE rig did not allow a study of the rate of coating growth but there is mention of a linear-type growth at least in the first stages of the PEO process 12 , where coating growth results from the oxidation of molten aluminium outflow through the discharge channels 13,14 . The coating thickness of Al-containing sample A6 is roughly comparable with that of samples A1-A3 for similar PEO processing parameters.…”
Section: Resultsmentioning
confidence: 99%