TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

STRUCTURAL FILM [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2013-03-13

English

Subject field(s)
  • Transformers and Inductance (Electronics)
CONT

To solve the problem on the microstructural characterization of metallic superlattices, taking the NiFe/Cu superlattices as example, we show that the structures of metallic superlattices can be characterized exactly by combining low-angle X-ray diffraction with high-angle X-ray diffraction. First, we determine exactly the total film thickness by a straightforward and precise method based on a modified Bragg law from the subsidiary maxima around the low-angle X-ray diffraction peak. Then, by combining with the simulation of high-angle X-ray diffraction, we obtain the structural parameters such as the superlattice period, the sublayer and buffer thickness. This characterization procedure is also applicable to other types of metallic superlattices.

French

Domaine(s)
  • Transformateurs et inductance (Électronique)
DEF

Un super-réseau est constitué par une répétition périodique de couches de compositions différentes. À la périodicité du réseau cristallin à l'intérieur de chaque couche s'ajoute alors la périodicité de composition du matériau final, d'où l'appellation.

CONT

À partir du milieu des années 1980, les progrès de l'épitaxie par jets moléculaires ont permis à des équipes américaines (aux laboratoires Bell et à l'université de l'Illinois) de réaliser des super-réseaux métalliques [...]

CONT

[...] la technique d'épitaxie par jets moléculaires permet d'élaborer des super-réseaux métalliques de grande qualité cristalline, avec des interfaces abruptes et un contrôle de l'épaisseur des couches individuelles à l'échelle de la monocouche atomique.

Spanish

Save record 1

Record 2 2010-02-23

English

Subject field(s)
  • Electrochemistry
  • Electrometallurgy
  • Inspection of Surfaces (Materials Engineering)
DEF

The condition of a metal surface that retards its normal reaction in a specified environment and is associated with the assumption of a potential more noble than normal.

CONT

The passivity of metals and alloys is one of the most important phenomenon responsible for out metal-based civilization. Most structural metals are viable in an engineering sense only because of the existence of a surface oxide film whose thickness may be less than a few nanometers. Although the phenomenon of passivity has been known for more than 150 years, a satisfactory description of the passive state still eludes us.

OBS

Passivity breakdown often leads to pitting.

OBS

The term passivity is sometimes used for surfaces covered by very thin films of phosphate or chromate, such as are formed by immersion in solutions containing phosphoric acid and/or chromic acid. This usage is incorrect and is discouraged.

OBS

passivity; passive state: Terms and definition standardized by ISO.

PHR

Passivity breakdown.

French

Domaine(s)
  • Électrochimie
  • Électrométallurgie
  • Contrôle des états de surface des matériaux
DEF

Condition du métal dans lequel la corrosion électrochimique est empêchée par certains états de surface.

OBS

La rupture de passivité peut mener à la piqûration.

OBS

On englobe parfois dans cette définition l'état d'une surface recouverte d'un film très mince de phosphate ou de chromate, tel qu'il se forme par immersion dans des solutions contenant de l'acide phosphorique et/ou de l'acide chromique. Cet usage est incorrect et n'est pas recommandé.

OBS

passivité; état passif: termes et définition normalisés par l'ISO.

OBS

Rupture de passivité.

Spanish

Campo(s) temático(s)
  • Electroquímica
  • Electrometalurgia
  • Control del estado de la superficie de los materiales
DEF

Carácter del metal que, merced a tratamientos superficiales, resiste a la erosión electroquímica.

Save record 2

Record 3 2009-10-10

English

Subject field(s)
  • Atomic Physics
  • Nuclear Fission Reactors
CONT

Accelerator-Based Irradiation Creep of Pyrolytic Carbon Used in TRISO Fuel Particles for the VHTR [very high temperature reactor]. Pyrolytic carbon(PyC) is used as one of the structural materials for the TRISO fuel particles in the next generation of gas cooled Very-High-Temperature Reactors(VHTR). Creep of pyrocarbon layers in the TRISO particles under irradiation can be significantly anisotropic via carbon atom displacements despite the original isotropic nature of the PyC film.

French

Domaine(s)
  • Physique atomique
  • Réacteurs nucléaires de fission
CONT

Les contraintes de tension dans les couches de pyrocarbone sont générées par un chargement de type «déformation imposée» et sont de ce fait partiellement relaxées par l'effet du fluage d'irradiation. Cette relaxation limite le niveau de contrainte dans les couches de pyrocarbone, évitant ainsi leur rupture prématurée en début d'irradiation.

Spanish

Save record 3

Record 4 2004-06-28

English

Subject field(s)
  • Television Arts
DEF

A film in which the codes and structures of social arrangements are evident.

OBS

Modernist rather than post-Modern, it broadly combines analysis of the structuring of perception with an exploration of film’s material components.

OBS

The Dictionary of New Media is available at: <a href="http://hepdigital.com/" title="http://hepdigital.com">http://hepdigital.com</a>.

French

Domaine(s)
  • Télévision (Arts du spectacle)
DEF

Film dans lequel les codes et l'organisation des conventions sociales sont mis en évidence.

Spanish

Save record 4

Record 5 2003-01-30

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
  • Shipbuilding
  • Destructive and Non-destructive Tests (Mat.)
DEF

... a nondestructive test method used for the inspection of airframe structure inaccessible or unsatisfactory for the application of other nondestructive test methods.

OBS

It is accomplished by passing the X-ray or gamma ray through the part of the assembly being tested to expose a radiographic film. The processed film shows the structural details of the part or assembly by variations in film density.

French

Domaine(s)
  • Aérotechnique et maintenance
  • Constructions navales
  • Contrôle destructif et non destructif (Matér.)
CONT

Inspection radiographique. La radiographie sert à détecter les criques internes, les vides, les porosités et les inclusions dans les matériaux métalliques ainsi que les délaminations et les fractures dans les matériaux composites (dans ce dernier cas, des liquides radio-opaques sont nécessaires).

Spanish

Save record 5

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