Objective
Objectives and content
In the 10 years since the high temperature
superconductors (HTS) were discovered, substantial
progress has been made toward applying them. High
current conductors based on the BiSrCaCuO phases can now
be fabricated in long lengths with critical currents
(Jc-s) approaching 105 A/cm2 at 77 K. Demonstrators for
the electrical power industry, such as cables,
transformers and motors, have been fabricated with them.
However, their cost and performance fall short of the
requirements for incorporation of this new technology
within a scenario of sustainable growth.
We will undertake the Basic Research (within Materials
Engineering Area 2.1.3.L) for fabrication of a second
generation HTS conductor, based on the YbaCuO phase. I
will:
Have a high Jc sustained in substantial magnetic fields
(because YbaCuO has better intrinsic properties than the
BiSrCaCuO phases).
Be robust and mechanically strong.
Be fabricated by a process sequence that can be scaled
up to the rapid production of long lengths, and so have
lower costs.
Thereby enable applications and commercialisation of
HTS conductors in the electrical power sector.
The obstacle to fabrication of YbaCuO phase conductors is
well-known: preparing the material with sufficient
crystalline texture to overcome the deleterious effects
of grain boundaries (if the misalignment between adjacent
grains exceeds a few degrees, the supercurrent that can
cross a boundary falls precipitously). This problem can
be circumvented, but until now only by approaches that
are slow, expensive or impractical to scale up.
Our approach starts from well-established "thick-film"
processing methods, and involves several stages,
including substrate preparation, precursor deposition and
texturing. The individual steps have been demonstrated
to be achievable; the difficulty is in integrating them
into a compatible total process.
From their previous research, the Partners have the
knowledge and skills to explore and extend the "parameter space" for the successive steps, thereby allowing them to
be undertaken compatibly. These are complex issues of
materials science, and so will be research-intensive. We will start by exploring a number of different avenues,
but rapidly focus on the most promising approaches.
The research activities by the SUPERTEXT academic
Partners will be mirrored by a vertically integrated team
of Industrial Partners, looking at the feasibility and
implications of scale-up for production. Also, we have
end-user Partners, who will consider the broad impact of
this second-generation conductor on electrical machines
and systems.
Deliverables will include:
Improved generic understanding of the fundamentals of
growth of textured ceramics.
Improved generic understanding of the fabrication of
textured metal substrates.
Short lengths of prototype second-generation conductor,
fabricated by scaleable approaches.
The technical know-how for its fabrication.
Technical assessment of fabrication costs.
Techno-economic assessment of the impact of this
conductor in the electrical power sector.
IPR, patents and exploitation agreements.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- agricultural sciences agriculture, forestry, and fisheries agriculture grains and oilseeds
- engineering and technology materials engineering ceramics
- natural sciences physical sciences electromagnetism and electronics superconductivity
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Coordinator
SW7 2BZ LONDON
United Kingdom
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