Patents by Inventor Ronald G. Vardiman

Ronald G. Vardiman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wear improvement in titanium alloys by ion implantation
    Patent number: 4568396
    Abstract: A method of making titanium alloy more resistant to sliding wear and fretting fatigue comprising the steps of:implanting carbon ions with at least one energy onto titanium alloy until at least 1.times.10.sup.17 carbon ions/cm.sup.2 have fallen onto the titanium alloy, said energy level of carbon ions being implanted being greater than 10 KeV. A second method comprises an additional step of heating the implanted titanium alloy to between 300.degree. C. and 500.degree. C. for 0.5 hours to 2 hours. The second method has a lower number of carbon ions/cm.sup.2 implanted onto the titanium.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: February 4, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Ronald G. Vardiman