Vertical two chamber reaction furnace
- Evergreen, CO
A vertical two chamber reaction furnace. The furnace comprises a lower chamber having an independently operable first heating means for heating the lower chamber and a gas inlet means for admitting a gas to create an ambient atmosphere, and an upper chamber disposed above the lower chamber and having an independently operable second heating means for heating the upper chamber. Disposed between the lower chamber and the upper chamber is a vapor permeable diffusion partition. The upper chamber has a conveyor means for conveying a reactant there through. Of particular importance is the thallinating of long-length thallium-barium-calcium-copper oxide (TBCCO) or barium-calcium-copper oxide (BCCO) precursor tapes or wires conveyed through the upper chamber to thereby effectuate the deposition of vaporized thallium (being so vaporized as the first reactant in the lower chamber at a temperature between about 700.degree. and 800.degree. C.) on TBCCO or BCCO tape or wire (the second reactant) at its simultaneous annealing temperature in the upper chamber of about 800.degree. to 950.degree. C. to thereby replace thallium oxide lost from TBCCO tape or wire because of the high annealing temperature or to deposit thallium on BCCO tape or wire. Continuously moving the tape or wire provides a single-step process that effectuates production of long-length TBCCO superconducting product.
- Research Organization:
- Midwest Research Institute, Kansas City, MO (United States)
- DOE Contract Number:
- AC36-83CH10093
- Assignee:
- Midwest Research Institute (Kansas City, MO)
- Patent Number(s):
- US 5882412
- Application Number:
- 09/006621
- OSTI ID:
- 872187
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
chamber
reaction
furnace
comprises
independently
operable
heating
means
gas
inlet
admitting
create
ambient
atmosphere
upper
disposed
vapor
permeable
diffusion
partition
conveyor
conveying
reactant
particular
importance
thallinating
long-length
thallium-barium-calcium-copper
oxide
tbcco
barium-calcium-copper
bcco
precursor
tapes
wires
conveyed
effectuate
deposition
vaporized
thallium
temperature
700
degree
800
tape
wire
simultaneous
annealing
950
replace
lost
deposit
continuously
moving
provides
single-step
process
effectuates
production
superconducting
product
chamber disposed
reaction furnace
independently operable
upper chamber
heating means
ambient atmosphere
gas inlet
copper oxide
inlet means
annealing temperature
thallium oxide
thallium-barium-calcium-copper oxide
step process
single-step process
chamber reaction
furnace comprises
continuously moving
barium-calcium-copper oxide
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