The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1997
Filed:
Aug. 25, 1995
Zelina A Iskanderova, Downsview, Ontario, CA;
Jasha I Kleiman, Thornhill, Ontario, CA;
Yuri Gudimenko, North York, Ontario, CA;
Grant Rheal Cool, Willowdale, Ontario, CA;
Roderick C Tennyson, King City, Ontario, CA;
Other;
Abstract
This invention provides an improved process for surface modification of polymers, graphites and carbon-based composite materials, and improved surface-modified materials produced by the process. The preferred surface modification process of the present invention comprises the steps of: high dose single or multiple implantation of the substrate with energetic ions, including ions of at least one metal or semi-metal element able to form a stable, non-volatile oxide; and oxidative full or partial conversion of an upper portion of the implanted layer to a continuous, resistant oxide-enriched surface layer. The process may also comprise the additional implantation of a hardening non-metal element to participate in the formation of a glass-like surface layer or to form a carbonized, hardened sub-layer. Surface modified materials of the present invention have substantially improved resistance to erosion by atomic oxygen and to thermal cycling, as well as improved resistance to UV/air, improved surface hardness and wear resistance, tailored optical properties and altered surface energy, making them potentially useful in aerospace as well as other industries.