Matchable, heat treatable, durable, ir-reflecting sputter-coated glasses and method of making same
First Claim
Patent Images
1. A method of heat treating a coated glass article comprising:
- a) sputter-coating onto a glass substrate having a thickness of about 1.5 mm-13 mm a layer system comprising from the glass substrate outwardly;
an undercoat layer comprised of silicon nitride;
a substantially metallic layer which includes nickel or a nickel alloy having a nickel content of at least 10% by weight Ni, and which is substantially free of any nitride, or oxide; and
an overcoat layer comprised of silicon nitride, andb) thereafter subjecting said coated glass substrate to a heat treatment selected from the group consisting of bending, tempering, heat strengthening and combinations thereof;
wherein after said heat treatment the resultant article exhibits a glass side reflectance Δ
H of no greater than about 2.0.
1 Assignment
0 Petitions
Accused Products
Abstract
A sputter-coated layer system including a non-nitrided and non-oxidized nickel or nickel alloy layer located between two layers of Si3 N4 of the requisite thicknesses and used for architectural and automotive glass substrates so as to be heat treatable and have ΔE characteristics sufficiently low to render the products matchable as between heat treated and non-heat treated products having the same coating thereon.
103 Citations
10 Claims
-
1. A method of heat treating a coated glass article comprising:
-
a) sputter-coating onto a glass substrate having a thickness of about 1.5 mm-13 mm a layer system comprising from the glass substrate outwardly; an undercoat layer comprised of silicon nitride; a substantially metallic layer which includes nickel or a nickel alloy having a nickel content of at least 10% by weight Ni, and which is substantially free of any nitride, or oxide; and an overcoat layer comprised of silicon nitride, and b) thereafter subjecting said coated glass substrate to a heat treatment selected from the group consisting of bending, tempering, heat strengthening and combinations thereof; wherein after said heat treatment the resultant article exhibits a glass side reflectance Δ
H of no greater than about 2.0. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of producing a heat treated sputter-coated glass article which is aesthetically matchable with a non-heat treated, sputter-coated glass article so as to have at least substantially the same glass side appearance, the steps including:
-
a) sputter-coating onto each of at least two glass substrates each having a thickness of about 1.5 mm-13 mm a layer system comprising from the glass substrates outwardly; an undercoat layer comprised of silicon nitride; a substantially metallic layer which includes nickel or a nickel alloy having a nickel content of at least 10% by weight Ni, and which is substantially free of any nitride or oxide; and an overcoat layer comprised of silicon nitride, b) subjecting at least one of said sputter-coated substrates to a heat treatment selected from the group consisting of bending, tempering, heat strengthening and combinations thereof;
whereby said at least one substrate after heat treatment exhibits a glass side reflectance Δ
EH of no greater than about 2.0 when compared to said non-heat treated substrates,said heat treated sputter-coated substrates so formed being of substantially the same glass side appearance as said non-heat treated sputter-coated substrates. - View Dependent Claims (8, 9, 10)
-
Specification