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US 6,165,616 AGranted
Synthetic diamond coatings with intermediate bonding layers and methods of applying such coatings
OwnerJerome H. Lemelson, James G. Conleyinventors
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Abstract
A process is disclosed for making new and improved diamond, "diamond-like carbon" (a-C) and "diamond-like hydrocarbon" (a-C:H) coatings bonded to substrates by using intermediate bonding layers engineered to reduce the residual stress in the diamond coatings.
Claims21
An article of manufacture comprising:
- a. a substrate having at least one exterior surface;
- b. at least one intermediate coating covering at least part of said exterior surface;
- and
- c. an outer layer, selected from the group consisting of synthetic diamond and diamond-like carbon covering at least part of said intermediate coating,
- wherein the Young's modulus, thermal expansion coefficient and Poisson ratio of said intermediate coating are predetermined by means of geometric element analysis to be such that the residual Von Mises stress in said outer layer is minimized.
2 more elements
An article of manufacture comprising:
- a. a substrate having at least one exterior surface;
- b. at least one intermediate coating having a predetermined thickness and covering at least part of said exterior surface;
- and
- c. an outer layer, selected from the group consisting of synthetic diamond and diamond-like carbon covering at least part of said intermediate coating,
- wherein the thickness of said intermediate coating is predetermined by means of geometric element analysis to minimize the residual Von Mises stress in said outer layer.
2 more elements
Dependencies are inferred from the claim text.