Electrical wire insulation and electromagnetic coil
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsGeorge J. Bich, Tapan K. Gupta
Life of this patent
Estimating the term…
Abstract
An electromagnetic coil for high temperature and high radiation application in which glass is used to insulate the electrical wire. A process for applying the insulation to the wire is disclosed which results in improved insulation properties.
Claims9
An insulated electrical conductor comprising, in combination, a metallic conductor and an insulating coating applied to the metallic conductor, the coating having been derived by applying to the conductor a liquid slurry comprising:
- (A) 15-55 solids weight percent a glass powder having a composition of:
- 40-60 wt.% SiO.sub.2 ;
- 6-13 wt.% Na.sub.2 O;
- 2-6 wt.% Al.sub.2 O.sub.3 ;
- 3-10 wt.% CaO;
- 15-25 wt.% BaO;
- and
- 2-10 wt.% Y.sub.2 O.sub.3 ;
- (B) 15-65 solids weight percent an inorganic filler selected from the group consisting of alumina, magnesia, zirconia or silica;
- (C) 30-50 solids weight percent of an organic binder;
- and
- (D) sufficient organic solvent to dissolve the organic binder;
- and by exposing said coated conductor to heat whereby said solvent and said organic binder are evaporated and further heating said conductor causing said coating to adhere to said conductor.
An insulated electrical conductor comprising, in combination, a metallic conductor and an insulating coating applied to the metallic conductor, the coating having been derived by applying to the conductor a liquid slurry comprising:
- (A) 15-55 solids weight percent a glass powder having a composition of:
- 40-60 wt.% SiO.sub.2 ;
- 6-13 wt.% MgO;
- 2-6 wt.% Al.sub.2 O.sub.3 ;
- 3-10 wt.% CaO;
- 15-25 wt.% BaO;
- and
- 2-10 wt.% Y.sub.2 O.sub.3 ;
- (B) 15-65 solids weight percent an inorganic filler selected from the group consisting of alumina, magnesia, zirconia or silica;
- (C) 30-50 solids weight percent of an organic binder;
- and
- (D) sufficient organic solvent to dissolve the organic binder;
- and by exposing said coated conductor to heat whereby said solvent and said organic binder are evaporated and further heating said conductor causing said coating to adhere to said conductor.
An insulated electrical conductor comprising, in combination, a metallic conductor and an insulating coating applied to the metallic conductor, the coating having been derived by applying to the conductor a liquid slurry comprising:
- (A) 15-55 solids weight percent a glass powder having a composition of:
- 40-60 wt.% SiO.sub.2 ;
- 14-26 wt.% BaO;
- 3-12 wt.% Na.sub.2 O;
- 3-12 wt.% CaO;
- 2-7 wt.% B.sub.2 O.sub.3 ;
- 2-8 wt.% Al.sub.2 O.sub.3 ;
- and
- 2-10 wt.% Y.sub.2 O.sub.3 ;
- (B) 15-65 solids weight percent an inorganic filler selected from the group consisting of alumina, magnesia, zirconia or silica;
- (C) 30-50 solids weight percent of an organic binder;
- and
- (D) sufficient organic solvent to dissolve the organic binder;
- and by exposing said coated conductor to heat whereby said solvent and said organic binder are evaporated and further heating said conductor causing said coating to adhere to said conductor.
Dependencies are inferred from the claim text.