| 摘要 |
A sputter-coated glass article (1) comprised of a glass substrate having sputtered thereon (from the glass outwardly): (a) a layer of Si3N4 of 450-600?A thickness (3); (b) a layer of Ni or nichrome of 7?A thickness or less (4a); (c) a layer of Ag of 115-190?A thickness (5); (d) a layer of Ni or nichrome of 7?A thickness or less (4b); and (e) a layer of Si3N4 of 580-800?A thickness (7), where the glass substrate is 2-6 mm thick. The coated glass substrate has a visible transmittance of at least 70%, a normal emissivity (En) of less than 0.07, a hemispherical emissivity (Eh) of less than 0.075, a sheet resistance (Rs) of less than 5.5 ohms/sq and having the following colour co-ordinates where the glass side characteristics are: RgY is 12-19, ah is -3 to +3, bh is -5 to -20, and where the film side characteristics are: RfY is 8-12, ah is 0-6, bh is -5 to -30 film, where RY is the reflectance and ah and bh are colour co-ordinates as measured in Hunter units III., C., 10 deg observer. |
