Abrasion wear resistant coated substrate product
First Claim
1. A coated substrate product comprised of a substantially optically transparent substrate which is transparent to light in the visible region of 350 to approximately 750 nanometers and which comprises a material selected from the group consisting of an amorphous material, a single crystal, polycrystalline materials, glass, salt materials, ceramic materials and mixtures thereof and at least one composite layer having a thickness in the range of 1 μ
- m to about 20 μ
m, said composite layer comprising a chemically vapor deposited first interlayer bonded to said substrate, and a chemically vapor deposited outer layer of substantially optically transparent diamond-like carbon which is transparent to light in the visible region of 350 to approximately 750 nonometers and is bonded to said first interlayer and away from said substrate;
said first interlayer and comprising a substantially optically transparent material devoid of alkali metal atoms and fluorine, which first interlayer is transparent to light in the visible region of 350 to approximately 750 nonometers and is selected from the group consisting of silicon nitride, titanium nitride, tantalum nitride, hafnium nitride, zirconium nitride, boron nitride, yttrium oxide, germanium oxide, hafnium oxide, silicon oxide, silicon dioxide, tantalum oxide, titanium oxide, zirconium oxide, silicon carbide, germanium carbide, mixtures thereof, and chemically bonded combinations thereof and capable of forming a strong chemical bond to said substrate and a strong chemical bond to said diamond-like carbon outer layer, whereby said product has greatly improved wear resistance for severe abrasive environments.
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Accused Products
Abstract
The coated substrate product finds particular application in eyeglass and sunglass lenses, architectural glass, analytical instrument windows, automotive windshields and laser bar code scanners for use in retail stores and supermarkets. The product has greatly improved wear resistance for severe abrasive environments and comprises a substantially optically transparent substrate, a chemicaly vapor deposited first interlayer bonded to the substrate and a chemically vapor deposited outer layer of substantially optically transparent diamond-like carbon bonded to the interlayer and away from the substrate.
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Citations
65 Claims
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1. A coated substrate product comprised of a substantially optically transparent substrate which is transparent to light in the visible region of 350 to approximately 750 nanometers and which comprises a material selected from the group consisting of an amorphous material, a single crystal, polycrystalline materials, glass, salt materials, ceramic materials and mixtures thereof and at least one composite layer having a thickness in the range of 1 μ
- m to about 20 μ
m, said composite layer comprising a chemically vapor deposited first interlayer bonded to said substrate, and a chemically vapor deposited outer layer of substantially optically transparent diamond-like carbon which is transparent to light in the visible region of 350 to approximately 750 nonometers and is bonded to said first interlayer and away from said substrate;said first interlayer and comprising a substantially optically transparent material devoid of alkali metal atoms and fluorine, which first interlayer is transparent to light in the visible region of 350 to approximately 750 nonometers and is selected from the group consisting of silicon nitride, titanium nitride, tantalum nitride, hafnium nitride, zirconium nitride, boron nitride, yttrium oxide, germanium oxide, hafnium oxide, silicon oxide, silicon dioxide, tantalum oxide, titanium oxide, zirconium oxide, silicon carbide, germanium carbide, mixtures thereof, and chemically bonded combinations thereof and capable of forming a strong chemical bond to said substrate and a strong chemical bond to said diamond-like carbon outer layer, whereby said product has greatly improved wear resistance for severe abrasive environments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- m to about 20 μ
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36. A coated substrate product comprised of a substantially optically transparent substrate which is transparent to light in the visible region of 350 to approximately 750 nanometers and which comprises a material selected from the group consisting of an amorphous material, a single crystal, polycrystalline materials, glass, salt materials, ceramic materials and mixtures thereof, a first composite layer and at least one second composite layer;
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said first composite layer having a thickness in the range of about 1 μ
m to about 20 μ
m and comprising a chemically vapor deposited first interlayer bonded to said substrate of a substantially optically transparent material capable of forming a strong chemical bond to said substrate which first interlayer is transparent to light in the visible region of 350 to approximately 750 nanometers and which is selected from the group consisting of silicon nitride, titanium nitride, tantalum nitride, hafnium nitride, zirconium nitride, boron nitride, yttrium oxide, germanium oxide, hafnium oxide, silicon oxide, silicon dioxide, tantalum oxide, titanium oxide, zirconium oxide, silicon carbide, germanium carbide, aluminum oxide, cerium oxide, tin oxide, thorium oxide, lithium oxide, sodium oxide, potassium oxide, rubidium oxide, cesium oxide, francium oxide, beryllium oxide, magnesium oxide, calcium oxide, strontium oxide, barium oxide, radium oxide, barium fluoride, cerium fluoride, magnesium fluoride, thorium fluoride, calcium fluoride, neodymium fluoride, lead fluoride, sodium fluoride, lithium fluoride, zinc selenide, zinc sulfide, mixtures thereof, and chemically bonded combinations thereof, a second interlayer bonded to and disposed immediately adjacent to said first interlayer and away from said substrate of a substantially optically transparent material devoid of alkali metal atoms and fluorine and capable of forming a strong chemical bond to said first interlayer and a strong chemical bond to diamond-like carbon, and a first substantially optically transparent diamond-like carbon layer which is transparent to light in the visible region of 350 to approximately 750 nanometers and which is bonded to and disposed immediately adjacent to said second interlayer and away from said substrate;said second composite layer which is transparent to light in the visible region of 350 to approximately 750 nanometers and which is bonded to and disposed immediately adjacent to said first composite layer and away from said substrate comprising a chemically vapor deposited third interlayer disposed immediately adjacent to said first diamond-like carbon layer of a substantially optically transparent material devoid of alkali metal atoms and fluorine and capable of forming a strong chemical bond to diamond-like carbon and a second substantially optically transparent diamond-like carbon layer bonded to and disposed immediately adjacent to said third interlayer and away from said substrate, whereby said coated substrate product has greatly improved wear resistance for severe abrasive environments. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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Specification