2020
DOI: 10.1016/j.matchemphys.2019.122023
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Fabrication of alumina with ordered tapered-nanopore nested in micro-bowl hierarchical structure by a combined anodization

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Cited by 6 publications
(4 citation statements)
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“…As result, the structure features hierarchical morphology with pores ordered along the cavity, while the profile of the pore became serrated. The idea is further continued with the introduction of more anodization steps by Ma et al [ 180 ]. The surface has been provided with a bowl-like array through the stable anodization in citric acid, followed by the combination of multiple mild anodization steps and the chemical etching.…”
Section: Engineered Naa Structuresmentioning
confidence: 99%
See 1 more Smart Citation
“…As result, the structure features hierarchical morphology with pores ordered along the cavity, while the profile of the pore became serrated. The idea is further continued with the introduction of more anodization steps by Ma et al [ 180 ]. The surface has been provided with a bowl-like array through the stable anodization in citric acid, followed by the combination of multiple mild anodization steps and the chemical etching.…”
Section: Engineered Naa Structuresmentioning
confidence: 99%
“…( B-1 ) 0.3 M sulfuric acid, 20 s (d int = 50 nm) and ( B-2 ) 0.3 M oxalic acid, 40 s (d int = 95 nm). Reprinted (adapted) with permission from [ 180 ]. Copyright 2019 Elsevier.…”
Section: Engineered Naa Structuresmentioning
confidence: 99%
“…Decorrida essa etapa inicial de 20 minutos inicia-se a geração de nanoconcavidades menores no interior das obtidas anteriormente nos tempos de 5 e 10 minutos, conforme a Figura 8c. Vale destacar que a geração de nanoconcavidades menores no interior das obtidas anteriormente se intensifica com o passar do tempo, conforme a Figura 8d (58). Uma variável que infere no tempo de processo é a composição do metal, pois estudos realizados sugerem que outras ligas de alumínio com menor grau de pureza necessitam de um tempo de processo maior para que se obtenha um resultado similar.…”
Section: Tempo De Anodizaçãounclassified
“…Houve um maior consumo da massa de alumina devido às maiores dimensões, com consequente descaracterização da uniformidade no crescimento do filme (9,22,54,55,58). Observa-se que a superfície é mais hidrofílica, devido a um maior desprendimento da camada tipo barreira do substrato, o que afeta a camada porosa, resultando assim numa superfície irregular e com muitas concavidades (54,55).…”
Section: Seção Transversalunclassified