The effect of Ti ions implantation on the structure of anodic alumina films

Cherenda, N.N.; Углов, В.В.; Litvinovich, G. V.; Danilyuk, A. L.

doi:10.1016/s0168-583x(03)01214-x

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…Thus far, many studies on the δ→θ transition have been reported, but the transition temperatures reported have all been different. The δ→θ transformation for alumina powder, however, occurs above approximately 900°C in all the reports (Levin & Brandon 1998; Cherenda et al 2003). In the present study, we found that the δ→θ transformation temperature was approximately 800–900°C, which is lower than the reported values by 100–200°C.…”

Section: Resultsmentioning

confidence: 91%

Laboratory production of and alumina grains and their characteristic infrared spectra

Kurumada

Koike

Kaito

2005

Monthly Notices of the Royal Astronomical Society

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The high‐temperature phase of δ‐Al2O3 was produced using smoke by the gas evaporation method in a mixture gas of O2 and Ar. The θ‐ and α‐Al2O3 were produced by heating the δ‐Al2O3 powder. The θ‐phase was also produced directly by burning a mixture of Al and Cr metal powders in O2–argon gas. On the basic peaks of δ‐Al2O3, the characteristic infrared peaks were observed at 10.4, 10.8, 11.4, 11.9, 12.4, 12.7, 13.0, 13.6, 14.2, 15.2, 15.8, 16.2, 17.0, 17.9 and 19.0 μm. The peak positions are distinct from the well‐known modes of corundum (α‐Al2O3), and from θ‐Al2O3 which has λ= 11.7, 12.0, 12.1–12.6, 13.6, 13.9–14.0, 15.8–16.0, 16.3, 17.1 and 18.5–19.2 μm. The alternation of the characteristic peaks from δ→θ→α is clearly shown in this paper.

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Section: Resultsmentioning

confidence: 91%

Laboratory production of and alumina grains and their characteristic infrared spectra

Kurumada

Koike

Kaito

2005

Monthly Notices of the Royal Astronomical Society

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“…The results helped to determine how to improve the composite coatings significantly by increasing some of the components of their microstructure. Cherenda et al [9] focused on the anodic alumina films and studied their phase and element composition. The research showed that the implantation into amorphous films resulted in the strong diffusion of Ti atoms into the depth of the films, other transformations took place in the entire structure of the films.…”

Section: Literature Reviewmentioning

confidence: 99%

PTFE Based Multilayer Micro-Coatings for Aluminum AlMg3 Forms Used in Tire Production

et al. 2021

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The basic prerequisite for obtaining the coating of good quality is the production of a layer without the occurrence of surface defects. A possible solution to the occurrence of defects on the functional surface of the form is the application of a polytetrafluoroethylene (PTFE)-based coating. The coating helps to reduce surface roughness and “smooth” defects like pores and micro-shrinkage. For this reason, a new type and methodology of the coating were prepared to achieve more production cycles between the individual cleaning processes during the production of a tire. The subject of the study was the analysis of surface-applied micro-coatings, including the analysis of chemical composition by using energy-dispersive X-ray (EDX) and microstructure in the area of coatings. Detailed microstructural characterization of Alfipas 7818 and Alfiflon 39 and its imaging of surface structures were studied using atomic force microscopy. To examine the surface layer of the coatings, metallographic specimens of cross-sections (by means of a mold) were prepared and examined by light and electron microscopy. This new multilayer micro-coating with a thickness of 20–25 μm has been found to prevent form contamination during tire production and to extend production cycles by 200–400% between process cleanings. This finding was actually tested in the production of tires in the environment of a large manufacturing company.

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“…Passive regions are observed in the potentiodynamic curves, indicating the formation of protective oxide film on the treated samples. Cherenda et al [7] investigated that after electrochemical processing anodic alumina films were in an amorphous state. Implantation into amorphous film results in the formation of γ-Al 2 O 3 while implantation into γ-Al 2 O 3 film results in the formation of an amorphous structure.…”

Section: Introductionmentioning

confidence: 99%

Formation of Anticorrosion Clusters on Anodic Alumina Films by Ni Ion Implantation

Tian

Zhao

Zuo

2006

AMR

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Formation of clusters with high corrosion resistance on anodic films of Aluminum by Ni ions implantation was studied. Ni ions were implanted in anodic films of 1070 aluminum at an energy of 40 keV with dose of 5.0×1017 ions/cm2. XPS analysis reveals that Ni is present in the states of metallic Ni and NiO on the surface of the anodic film. Electrochemical results show that anodic films with Ni ions implantation provide relatively higher corrosion resistance in NaCl solution. The anti-corrosion clusters on the surface of anodic films should be the main reason for better corrosion resistance of the implanted samples.

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The effect of Ti ions implantation on the structure of anodic alumina films

Cited by 8 publications

References 24 publications

Laboratory production of and alumina grains and their characteristic infrared spectra

Laboratory production of and alumina grains and their characteristic infrared spectra

PTFE Based Multilayer Micro-Coatings for Aluminum AlMg3 Forms Used in Tire Production

Formation of Anticorrosion Clusters on Anodic Alumina Films by Ni Ion Implantation

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