Accession Number:

ADD019472

Title:

Method and Apparatus for Ablative Bonding Using a Pulsed Electron

Descriptive Note:

Patent, Filed 30 Jan 97, patented 27 Apr 99

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1999-04-27

Pagination or Media Count:

9.0

Abstract:

A method and apparatus for bonding a layer of coating or cladding material onto a substrate with minimal bulk heating of the substrate. A pulsed electron beam generator is used to produce high energy electrons at the beginning of the pulse and a larger number of lower energy electrons at the end of the pulse. A thin sacrificial or ablative layer of an easily-vaporized material such as tin is placed on top the coating. The high energy electrons penetrate through the ablative and coating layers and heat the coating-substrate interface. The ablative layer is then heated by the low energy electrons to a much higher temperature, causing it to vaporize. The ablation process generates a force on the coating layer which drives it into the substrate.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE