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| Process for producing dielectric thin films |
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| Particles and a process for preparing the same |
| What is claimed is: 1. A process for forming a plurality of particles, comprising the steps of: (A) ... |
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| Process to improve programming of memory cells |
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| Organic electroluminescent device and encapsulation method |
| Generally, the present invention relates to organic electroluminescent devices and methods of ... |
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| Solid golf ball center with block butadiene-styrene polymers |
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| Golf ball |
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| Solid golf balls |
| What is claimed is: 1. A solid golf ball comprising a rubber component selected from the group ... |
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| Thread-wound golf ball |
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Method and apparatus for applying metal cladding on surfaces and products formed thereby
| Details |
Inventors: Bosna, Alexander A.; Riccio, Louis M.;
Assignee:
Primary Examiner: Newsome; John H.
Assistant Examiner:
Attorney, Agent or Firm: Zegeer; Jim
Small, preferably micronsized hollow glass or ceramic spheres or foaming agents for making such micronsized hollow spaces or voids are incorporated into a resin material which is formed into a layer and after curing of the resin layer, it is abraded, sand or grit blasted so as to rupture the outermost layer of spheres or voids to provide a plurality of undercuts or nooks and crannies. A thermally sprayed metal, such as copper, becomes embedded into the undercuts pores, nooks and crannies, such that the bond or adherent strength is greatly improved. This micronsized glass, ceramic spheres and/or pores greatly increases the bond strength by providing better undercuts in the surface to be sprayed by molten metal and provide the capability of depositing thicker layers without jeopardizing the bond. |
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DETAILED DESCRIPTION OF THE INVENTION As noted in our application Ser.
No.
481,412, applying metallic coatings on surfaces by thermal spraying is not, per se, new as is shown in Miller U.
S.
Pat.
No.
4,078,097.
The thermal spray processes include melting powder in an electric or oxyacetylene arc and using compressed air or inert gas to propel the molten particles toward the substrate at a high velocity.
Another form of thermal spray is the plasma arc whereby the powder or wire introduced into a high-velocity plasma arc created by the rapid expansion of gas subjected to electric arc heating in a confined volume.
Another thermal spray process that is used, is the combustion of oxygen and fuel in a confined volume and its expansion through a nozzle provide the high velocity flow into which metal powder is introduced coincidental with the projected gas stream.
The mechanism of attachment is that molten particles of copper which can be travelling at hypersonic speeds, greater than 5 times the speed of sound or estimated at 6,000 feet per second (with certain types of equipment) will flow into the undercuts, nooks and crannies and the first layer forms the basis upon which subsequent layers of metal can be deposited to build-up to a desired thickness.
The molten particles of metal forced into the nooks, crannies and undercuts and roughness of the surface produces a much stronger and more dense flexible layer of cladded metal which, in the case of copper or copper based alloys, are very useful in providing marine anti-fouling surfaces.
Piping made of concrete, steel, etc.
, can easily have the internal surfaces thereof treated according to the process of this invention to reduce and eliminate flow impeding growths.
As shown in FIG.
1, the initial step of applying a coating of copper or copper alloy to a substrate surface such as a marine hull is surface preparation, followed by applying a syntactic foam resin coating, following by a coating of sprayed copper on an abraided grit-blasted cure syntactic resin layer
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Nonmetallic Processes 
