NOTICE: The workshop that is the subject of this summary was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine.

The workshop was conducted by the National Materials Advisory Board under Grant No. DASC02-01-P-0038 from the U.S. Army National Ground Intelligence Center. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the organizations or agencies that provided support for the project.

Available in limited supply from National Materials Advisory Board, 2101 Constitution Avenue NW, Washington, DC 20418; 202–334–3505; nmab@nas.edu; http://www.nas.edu/nmab

Cover: Illustration of a thermal spray gun courtesy of Stephen Ridder, National Institute of Standards and Technology.