US5206083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond and diamond-like films and coatings prepared by deposition on substrate that contain a dispersion of diamond particles
Assignee: Cornell Research Foundation Inc
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Filing: 1989-09-18
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Granted: 1993-04-27
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Expires: 2009-09-18
Abstract
Abstract Novel diamond thin films deposited on a metal or ceramic composite comprising a matrix having dispersed therein finely divided diamond or diamond-like particles are useful in improving the erosion resistance of materials used for long wave infrared transmitting applications such as domes and infrared windows.
Inventors
- 👤 Rishi Raj
- 👤 Albert J. Sievers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:54
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5001; C04B41/5002; C04B41/80; C04B41/81; C04B41/85; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/274; C23C16/278; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/14; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A diamond coated article comprising a uniform film of diamond deposited on a composite comprising a three dimensional matrix having uniformly dispersed throughout at lateral distances from about 0.01 to about 5.0 μm finely divided diamond particles at a volume concentration of from 0.1 to about 75 percent wherein the said finely divided diamond particles have a particle size of from about 0.01 to about 5.0 micrometer diameter; the matrix has a particle size of from about 0.5 micrometer to about 50 micrometer; and wherein said matrix transmits infrared light at wavelengths from about 1 to at least 10 micrometers and said composite transmits infrared light at wavelengths from about 8 micrometers to about 15 micrometers.
Claim 2
Dependent Claim
116 words
A diamond coated article comprising a uniform film of diamond deposited on a composite comprising a three dimensional matrix having uniformly dispersed throughout at lateral distances from about 0.01 to about 5.0 μm finely divided diamond particles at a volume concentration of from 0.1 to about 75 percent wherein the said finely divided diamond particles have a particle size of from about 0.01 to about 5.0 micrometer diameter; the matrix has a particle size of from about 0.5 micrometer to about 50 micrometer; and wherein said matrix transmits infrared light at wavelengths from about 1 to at least 10 micrometers and said composite transmits infrared light at wavelengths from about 8 micrometers to about 15 micrometers.
Claim 3
Dependent Claim
32 words
The coated article of claim 1 wherein the matrix comprises alloys and compounds derived from the following elements: zinc, selenium, thallium, arsenic, thorium, sulfur, fluorine, iodine, chlorine and bromine, phosphorous and oxygen.
Claim 4
Dependent Claim
54 words
The coated article of claim 2 wherein the diamond has a particle size of from about 0.1 to about 5.0 micrometer diameter, the matrix has a particle size of from about 0.5 micrometer to about 50 micrometer, and the diamond is dispersed in the matrix at from about 1 to about 30 volume percent.
Claim 5
Dependent Claim
40 words
The diamond coated article of claim 3 wherein at least one surface of the composite on which the diamond film is deposited has diamond nuclei uniformly positioned on the surface at lateral distances of from about 0.5 to 2.0 μm.
Claim 6
Dependent Claim
24 words
The coated article of claim 4 wherein the diamond film is deposited on at least one surface of the composite by chemical vapor deposition.
Claim 7
Dependent Claim
20 words
The coated article of claim 4 wherein said matrix has a refractive index of from about 2.10 to about 2.60.
Claim 8
Dependent Claim
49 words
The coated article of claim 1 wherein said matrix is selected from the group consisting of one or more of the following: zinc sulfide, zinc selenide, barium monosulfide, calcium sulfide, calcium fluoride, magnesium sulfide, cadmium telluride, gallium arsenide, thorium chloride, thorium iodide, thorium tetrafluoride, arsenic trisulfide and tin iodide.
Claim 9
Dependent Claim
12 words
The coated article of claim 7 wherein the matrix is zinc sulfide.
Claim 10
Dependent Claim
12 words
The coated article of claim 7 wherein the matrix is zinc selenide.
Claim 11
Dependent Claim
16 words
The diamond coated article of claim 7 wherein the matrix is a zinc sulfide-zinc selenide alloy.
Claim 12
Dependent Claim
25 words
The coated article of claim 1 wherein the matrix comprises compounds formed from the III and V group elements of the periodic table of elements.
Claim 13
Dependent Claim
25 words
The coated article of claim 1 wherein the matrix comprises compounds formed from the II and VI group elements of the periodic table of elements.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |