Reflective articles having improved corrosion resistance
First Claim
Patent Images
1. A reflective article, comprising:
- a glass substrate; and
a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing at least one ion selected from the group consisting of Cr(II), V(II or III), Ti(III or II), Fe(II), In(I or II), Cu(I), and Al(III), washed and dried, whereby the reflective metal coating is protected against corrosion.
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Abstract
A reflective article such as a mirror or an energy-screening transparent panel comprises a reflective metal coating deposited on a glass substrate. The metal coating comprises a reflective layer of silver and has been treated with a solution containing ions of at least one of the group consisting of: Cr(II); V(II or III); Ti(III or II); Fe(II); In(I or II); Cu(I); and Al(III). Such a treatment affords protection of the reflective coating against corrosion.
17 Citations
16 Claims
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1. A reflective article, comprising:
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a glass substrate; and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing at least one ion selected from the group consisting of Cr(II), V(II or III), Ti(III or II), Fe(II), In(I or II), Cu(I), and Al(III), washed and dried, whereby the reflective metal coating is protected against corrosion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A reflective article, comprising:
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a glass substrate, and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing Al(III) ions whereby edge corrosion is reduced so that the reflective metal coating has a maximum edge corrosion which does not exceed 179 μ
m measured by a CASS test and a mean edge corrosion which does not exceed 322 μ
m measured by the CASS test, and a mean edge corrosion which does not exceed 37 μ
m measured according to a Salt Fog Test.
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13. A reflective article, comprising:
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a glass substrate, and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing Cr(II) ions whereby edge corrosion is reduced so that the reflective metal coating has a maximum edge corrosion which does not exceed 4100 μ
m measured by a CASS test and a mean edge corrosion which does not exceed 3000 μ
m measured by the CASS test, and a mean edge corrosion which does not exceed 24 μ
m measured according to a Salt Fog Test.
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14. A reflective article, comprising:
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a glass substrate, and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing V(III) ions whereby edge corrosion is reduced so that the reflective metal coating has a maximum edge corrosion which does not exceed 769 μ
m measured by a CASS test and a mean edge corrosion which does not exceed 240 μ
m measured by the CASS test, and a mean edge corrosion which does not exceed 18 μ
m measured according to a Salt Fog Test.
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15. A reflective article, comprising:
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a glass substrate, and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing Ti(III) ions whereby edge corrosion is reduced so that the reflective metal coating has a maximum edge corrosion which does not exceed 404 μ
m measured by a CASS test and a mean edge corrosion which does not exceed 147 μ
m measured by the CASS test, and a mean edge corrosion which does not exceed 18 μ
m measured according to a Salt Fog Test.
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16. A reflective article, comprising:
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a glass substrate, and a reflective metal coating deposited on the glass substrate and comprised of a reflective layer of silver which has been treated with a solution containing Fe(II) ions whereby edge corrosion is reduced so that the reflective metal coating has a maximum edge corrosion which does not exceed 3218 μ
m measured by a CASS test and a mean edge corrosion which does not exceed 1478 μ
m measured by the CASS test.
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Specification