TERMIUM Plus®

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

GRADIENT FURNACE [7 records]

Record 1 2011-12-14

English

Subject field(s)
  • Scientific Instruments
CONT

The European furnace insert in the MSL [Materials Science Laboratory] is developed to support research in the field of Bridgman crystal growth. The LGF [Low Gradient Furnace] consists of two heated cavities separated by an insulating, "adiabatic" zone. It is intended to provide restricted but well-controlled gradients between two stable temperature plateaux. Crystal growth is performed by translating the furnace over a stationary sample; thermomechanical stresses in the grown crystal are minimised by maintaining the solidified part of the sample in the heated cavity throughout processing. Alternatively, the insert can be used for thermodiffusion experiments by keeping the furnace stationary and using only the gradient capability. Isothermal experiments can also be carried out with suitable sample/cartridge configurations.

French

Domaine(s)
  • Instruments scientifiques
CONT

[Le] microscope confocal Zeiss LSM 510 [...] est équipé d'un incubateur, d'un insert chauffant ainsi que d'une chambre de perfusion, ce qui permet l'observation de cellules vivantes dans les meilleures conditions possibles.

Spanish

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Record 2 2011-08-10

English

Subject field(s)
  • Space Exploration Equipment and Tools
  • Research Experiments in Space
CONT

CHAMPS is a modular microgravity research furnace developed for the National Research Council' s Space Division. It was flown in a Get-Away-Special(GAS) container aboard the space shuttle STS-67 in June 1993 to investigate GaAs [gallium arsenide] crystal growth by liquid phase electroepitaxy(LPEE). Combining the advantages of both dedicated and generic experimental facilities, CHAMPS allows investigators to specify their own experimental configuration while at the same time providing them with generic peripherals. Configurable hardware included thermal and gradient furnace, levitator, etc., while generic peripherals included control and data acquisition, thermal insulation, and ground support equipment.

French

Domaine(s)
  • Équipement et outillage d'exploration spatiale
  • Travaux de recherche dans l'espace

Spanish

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Record 3 2003-10-09

English

Subject field(s)
  • Orbital Stations
  • Research Experiments in Space
CONT

The ESA facility MOMO MOrphological transition in transparent MOdel materials is designed to study directional solidification of optically transparent melts. It investigates the effect of gravity on the formation of growth morphologies.

CONT

The key element of the MOMO experiment assembly is a Bridgman furnace for low temperatures(< 100°C). The furnace generates a temperature gradient over a cylindrical glass ampoule containing the sample. The sample material for the first two flights was a succinonitrile(SCN) based compound, which has solidifying structures similar to those of a metal alloy. The furnace is accommodated on a linear drive, which can be moved over the sample ampoule for directional solidification. An endoscope from the liquid side of the sample provides optical observation of the solid-liquid interface. Recorded images are analysed after the experiment to determine parameters of the solidifying morphological structure.

OBS

ESA facility MOMO: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
  • Travaux de recherche dans l'espace
CONT

[...] l'ESA [European Space Agency] emporte le Biorack et l'expérience MOMO [MOrphological transition in transparent MOdel materials] à bord du Space Hab.

OBS

bac expérimental MOMO : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

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Record 4 2003-02-26

English

Subject field(s)
  • Space Centres
  • Orbital Stations
CONT

Advanced Gradient Heating Facility(AGHF)... The AGHF supports the production of advanced semiconductor materials and alloys using the directional solidification process, which depends on establishing a hot side and a cold side in the sample(a temperature gradient). It provides an extremely stable temperature environment of up to 1, 400°C, high-temperature gradients of up to 100°C/cm in the solidification zone, slow movement of the gradient across a sample to provide slow growth rates, efficient cooling through the use of a liquid metal cooling ring attached to the sample container, and Peltier pulse marking capability. The AGHF consists of three modules mounted in one side of a Spacelab double rack : the Core Facility Module contains the processing chamber with the furnace inside; the Electronics Module contains the controls and equipment necessary to operate the furnace; and the Gas Storage Module contains argon for chamber repressurization and sample cooling.

OBS

advanced gradient heating facility; AGHF: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Centres spatiaux
  • Stations orbitales
OBS

Dans les conditions de microgravité de l'espace, il est possible d'éliminer nombre de ces imperfections produites sous l'effet de la pesanteur. Les chercheurs LMS [Laboratoire de mécanique des fluides] ont produit dans le Four perfectionné à gradient (GHF pour Gradient Heating Facility) des matériaux et des alliages de semiconducteurs de pointe selon la technique de la solidification directionnelle qui repose sur l'établissement d'une portion chaude et d'une portion froide à l'intérieur d'un échantillon (gradient de température).

OBS

four à gradient à haute température; AGHF : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 4

Record 5 2002-11-25

English

Subject field(s)
  • Scientific Research Equipment
  • Physics of Solids
OBS

advanced gradient heating facility : In the area of microgravity sciences and materials processing, six individual experiments, some with many separate runs, were conducted in the Advanced Gradient Heating Facility, a furnace for solidifying alloys and crystals. These experiments yielded information on the physical processes involved in solidification, and the results may help drive the production of advanced semiconductor materials in space and on Earth.

French

Domaine(s)
  • Matériel et équipement (Recherche scientifique)
  • Physique des solides

Spanish

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Record 6 2001-10-19

English

Subject field(s)
  • Orbital Stations
  • Research Experiments in Space
CONT

[The] Gradient Heating Furnace(GHF)... is allocated the entire resources of Materials Science Rack I and consists of the Material Processing Unit and Sample Cartridge Automatic Exchange Mechanism. The Material Processing Unit is a zone-type 1600°C(2912°F) furnace with vacuum capabilities that accepts cartridge-type sample. In order to conserve crew resources on orbit, the sample cartridge is automatically exchanged by the Sample Cartridge Automatic Exchange Mechanism.

OBS

material processing unit: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
  • Travaux de recherche dans l'espace
OBS

unité de traitement des matériaux : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 6

Record 7 2001-10-19

English

Subject field(s)
  • Orbital Stations
  • Research Experiments in Space
CONT

The Gradient Heating Furnace(GHF)... is allocated the entire resources of the Materials Science Rack I. [It] consists of the Material Processing Unit and the Sample Cartridge Automatic Exchange Mechanism. The Material Processing Unit is a zone-type 1600°C(2912°F) furnace with vacuum capabilities that accepts cartridge-type sample. In order to conserve crew resources on orbit, the sample cartridge is automatically exchanged by the Sample Cartridge Automatic Exchange Mechanism.

OBS

gradient heating furnace; GHF : term and abbreviation officially approved by the International Space Station official approval Group(ISSOAG).

Key term(s)
  • gradient heating furnace
  • gradient-heating facility

French

Domaine(s)
  • Stations orbitales
  • Travaux de recherche dans l'espace
OBS

four à gradient; GHF : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 7

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