Diamond having multiple coatings and methods for their manufacture
First Claim
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1. A diamond element having good bonding properties, comprising:
- a. a diamond substrate;
b. a first layer bonded to said diamond substrate;
c. a second layer bonded to said first layer; and
d. a third layer bonded to said second layer, said first layer including chromium carbide, said third layer including a transition element and said second layer including an element selected from the group consisting of titanium, vanadium, zirconium, niobium, tantalum, iron/ cobalt, nickel and copper.
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Abstract
A diamond element having good bonding properties and a method for fabricating the diamond element in which a diamond substrate is coated by and bonded to a first layer of chromium carbide, a second layer containing titanium, vanadium, zirconium, niobium, tantalum, iron, cobalt, nickel or copper, is bonded to said first layer, and a third layer of tungsten, or molybdenum deposited by a CVD technique utilizing metal halides, is bonded to said second layer. The second layer functions to protect the chromium carbide layer against attack by halide containing gas during the CVD deposition of the tungsten, or molybdenum.
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Citations
9 Claims
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1. A diamond element having good bonding properties, comprising:
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a. a diamond substrate; b. a first layer bonded to said diamond substrate; c. a second layer bonded to said first layer; and d. a third layer bonded to said second layer, said first layer including chromium carbide, said third layer including a transition element and said second layer including an element selected from the group consisting of titanium, vanadium, zirconium, niobium, tantalum, iron/ cobalt, nickel and copper. - View Dependent Claims (2)
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3. An article of manufacture containing a firmly secured diamond element, said tool comprising:
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a. a diamond substrate; b. a first layer chemically bonded to said diamond substrate; c. a second layer chemically bonded to said first layer; d. a third layer chemically bonded to said second layer; and e. a body bonded to said third layer, said first layer including chromium carbide, said third layer including a transition element and said second layer including an element selected from the group consisting of titanium, vanadium, zirconium, niobium, tantalum, iron, cobalt, nickel and copper. - View Dependent Claims (4)
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5. A method for producing a diamond element capable of being securely bonded to a substrate, the method comprising the steps of:
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a. depositing a first layer on said diamond element; b. depositing a second layer on said diamond element; and c. depositing a third layer on said diamond element, said first layer including chromium carbide, said third layer including a transition element and said second layer including an element selected from the group consisting of titanium, vanadium, zirconium, niobium, tantalum, iron, cobalt, nickel and copper. - View Dependent Claims (6, 7, 8, 9)
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Specification