Atomistic nitriding processes of titanium thin films due to nitrogen-implantation

Kasukabe, Y.; Nishida, S.; Yamamoto, S.; Yoshikawa, Masahito; Fujino, Y.

doi:10.1016/j.apsusc.2008.03.191

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…AFM analyses and condensation experiments performed in the same work indicated a connection between the formation of particulate precipitates on the treated surface and the observed change of the condensation form. Considering results from materials research for nitrogen implanted titanium surfaces, − these precipitates are likely to be titanium nitrides. They are formed because II with sufficiently high ion doses introduces more doping elements into the titanium surface layer reachable by the ions than the material can dissolve in its structure .…”

Section: Introductionmentioning

confidence: 99%

On the Characteristics of Ion Implanted Metallic Surfaces Inducing Dropwise Condensation of Steam

2010

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The present work provides new information on the characteristics of ion implanted metallic surfaces responsible for the adjustment of stable dropwise condensation (DWC) of steam. The results are based on condensation experiments and surface analyses via contact angle (CA) and surface free energy (SFE) measurements as well as scanning electron microscopy (SEM). For studying possible influences of the base material and the implanted ion species, commercially pure titanium grade 1, aluminum alloy Al 6951, and stainless steel AISI 321 were treated with N þ , C þ , O þ , or Ar þ using ion beam implantation technology. The studies suggest that chemically inhomogeneous surfaces are instrumental in inducing DWC. As this inhomogeneity is apparently caused by particulate precipitates bonded to the metal surface, the resulting nanoscale surface roughness may also influence the condensation form. On such surfaces nucleation mechanisms seem to be capable of maintaining DWC even when CA and SFE measurements indicate increased wettability. The precipitates are probably formed due to the supersaturation of ion implanted metal surfaces with doping elements. For high-alloyed materials like AISI 321 or Hastelloy C-276, oxidation stimulated by the condensation process obviously tends to produce similar surfaces suitable for DWC.

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Section: Introductionmentioning

confidence: 99%

On the Characteristics of Ion Implanted Metallic Surfaces Inducing Dropwise Condensation of Steam

2010

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Studies on the Origin of Dropwise Condensation of Steam on Ion Implanted Metallic Surfaces

Rausch

Leipertz

Fröba

et al. 2011

Chemie Ingenieur Technik

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Die Ursache der Tropfenkondensation von Wasserdampf an ionenimplantierten Metalloberflächen wurde grundlegend untersucht. Auf Basis von Kondensationsexperimenten und Oberflächenanalysen konnte aufgezeigt werden, dass chemisch inhomogene und sich durch topografische Nanostrukturen auszeichnende Oberflächen mit der Einstellung von Tropfenkondensation im Zusammenhang stehen. Die Entstehung dieser die Kondensationsform beeinflussenden Oberflächencharakteristika ist auf partikelartige Ausscheidungen zurückzuführen, die an ionenimplantierten Oberflächen durch den Abbau der Übersättigung des Basismaterials mit den Dotierelementen gebildet werden. Ähnliche Oberflächeneigenschaften entwickeln sich auch an verschiedenen unbehandelten, hochlegierten Werkstoffen spontan durch Oxidations‐ und Abtragungseffekte während des Kondensationsprozesses, was ebenfalls zur Einstellung von Tropfenkondensation führt. Eine mögliche Erklärung für die beobachteten Kondensationsphänomene an entsprechenden Oberflächen liefert eine neu entwickelte Modellvorstellung zum stattfindenden Kondensationsmechanismus.

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Solar gas nitriding of Ti6Al4V alloy

Rodríguez

Herranz

Romero

2013

Applied Surface Science

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Atomistic nitriding processes of titanium thin films due to nitrogen-implantation

Cited by 7 publications

References 18 publications

On the Characteristics of Ion Implanted Metallic Surfaces Inducing Dropwise Condensation of Steam

On the Characteristics of Ion Implanted Metallic Surfaces Inducing Dropwise Condensation of Steam

Studies on the Origin of Dropwise Condensation of Steam on Ion Implanted Metallic Surfaces

Solar gas nitriding of Ti6Al4V alloy

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