Impact implantation of particulate material into polymer surfaces
OwnerNoel C. Calkinsinventor
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Abstract
A method of treating the surface of a polymeric article by impact implantation with particulate material to attain hardening, abrasion resistance or other altered surface characteristics. High pressure treatment with a slurry of a liquid mixed with a ceramic particulate material in the 66 to 350 micron particle size range can be employed to implant the surface of a polymeric article to attain improved abrasion and erosion resistance. Similarly impact implantation with electrically conductive or magnetic materials can be employed to attain a conductive surface or a surface having electromagnetic radiation absorption characteristics. In addition to water jet impact implantation, there is disclosed methods of ultrasonic, sheet explosive and mechanical particle implantation.
Claims18
A method of treating a surface of a solid polymeric article, comprising driving a particulate material by a fluid carrier emitted at a pressure of between approximately 20,000 and 65,000 pounds per square inch so as to achieve impact implantation and penetration of said particulate material into the surface of said article to a depth and concentration sufficient to alter surface characteristics of the article.
A method of treating a surface of an article, comprising the steps of coating the article with a solid layer of polymeric material and subsequently driving a particulate material against said solid layer by a fluid carrier emitted at a pressure of between approximately 20,000 and 65,000 pounds per square inch so as to achieve impact implantation and penetration of said particulate material into said layer to a depth and concentration sufficient to alter surface characteristics of the polymer material.
A method of treating a surface of a solid polymeric article, comprising the steps of:
- mixing a particulate ceramic material with a carrier fluid to form a slurry;
- and
- spraying said slurry against said article at a pressure of up to approximately 65,000 pounds per square inch so as to achieve a sufficient velocity to obtain impact implantation and penetration of said particulate material into the surface of said article to a depth and concentration sufficient to alter surface characteristics of the article.
Dependencies are inferred from the claim text.