Dip coating of phase pure YBCO films on substrates
OwnerChristine L. Vrtisinventor
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Abstract
A method for providing a superconductive coating on substrates by dip coating is disclosed. The dip coating formulation includes a vehicle of terpineol, butoxyethyl acetate and binder which is mixed with phase pure YBCO powder to form an ink having a viscosity ranging from 220 cPs to about 270 cPs at 100 s−1. After the substrate is dipped in the dip coating ink, it is dried and sintered. The ink formulation is prepared by dissolving the binder in the terpineol and butoxyethyl acetate solvents to create a vehicle. The phase pure YBCO powder is then mixed with the vehicle to create a dip ink formulation having the aforenoted viscosity.
Claims61
A formulation for dip coating a superconducting coating onto a substrate, the formulation comprising:
- from about 62 to about 64 wt % phase pure YBa2Cu3O6+x powder and from about 36 to about 38 wt % vehicle,
- the vehicle comprising
- from about 57 wt % to about 59 wt % terpineol,
- from about 37 wt % to about 39 wt % butoxyethyl acetate, and
- from about 2 wt % to about 5 wt % binder.
A method for applying a superconducting coating onto a substrate by dip coating, the method comprising:
- providing a substrate with a first thickness;
- providing a vehicle comprising
- from about 57 wt % to about 59 wt % terpineol,
- from about 37 wt % to about 39 wt % butoxyethyl acetate, and
- from about 2 wt % to about 5 wt % binder
- mixing the vehicle with phase pure YBa2Cu3O6+x powder to provide a dip coating formulation comprising from about 62 wt % to about 64 wt % phase pure YBa2Cu3O6+x powder and from about 36 wt % to about 38 wt % vehicle;
- dipping the substrate in the dip coating formulation to form a coating thereon having a second thickness;
- removing the substrate from the dip coating formulation;
- drying the substrate;
- and
- sintering the substrate.
A formulation for dip coating a superconducting coating onto a substrate, the formulation consisting essentially of:
- about 63 wt % phase pure YBa2Cu3O6+x powder and about 37 wt % vehicle,
- the vehicle consisting essentially of
- from about 57 wt % to about 59 wt % alpha-terpineol,
- from about 37 wt % to about 39 wt % 2-butoxyethyl acetate,
- from about 0.3 wt % to about 0.9 wt % B-67 acryloid,
- from about 0.4 wt % to about 0.8 wt % T-200™ cellulose,
- from about 0.5 wt % to about 0.9 wt % N4™ cellulose, and
- from about 0.4 wt % to about 0.8 wt % Ehec-Hi™ cellulose.
A method for applying a superconducting coating onto a substrate by dip coating, the method comprising:
- providing a substrate with a first thickness;
- providing a vehicle consisting essentially of
- from about 57 wt % to about 59 wt % alpha-terpineol,
- from about 37 wt % to about 39 wt % 2-butoxyethyl acetate,
- from about 0.3 wt % to about 0.9 wt % B-67 acryloid,
- from about 0.4 wt % to about 0.8 wt % T-200™ cellulose,
- from about 0.5 wt % to about 0.9 wt % N4™ cellulose, and
- from about 0.4 wt % to about 0.8 wt % Ehec-Hi™ cellulose
- mixing the vehicle with phase pure YBa2Cu3O6+x powder to provide a dip coating formulation comprising about 63 wt % phase pure YBa2Cu3O6+x powder and about 37 wt % vehicle and with a viscosity of about 247 cPs at 100s−1;
- dipping the substrate in the method form a coating thereon having a second thickness;
- removing the substrate from the method;
- drying the substrate;
- and
- sintering the substrate.
Dependencies are inferred from the claim text.