Can I read Effect of sputtering parameters on Ta coatings for gun bore applications on EtoBox?

Effect of sputtering parameters on Ta coatings for gun bore applications by D.W Matson; E.D McClanahan; J.P Rice; S.L Lee; D Windover is a Engineering article available to read on EtoBox.

What is Effect of sputtering parameters on Ta coatings for gun bore applications about?

Tantalum offers a number of attractive properties for gun bore coating applications, including a high melting temperature, high ductility, and an environmentally friendly deposition method. However, vapor-deposited tantalum can appear in both the characteristic bcc phase found in the bulk material, and in a very brittle and less desirable 'beta' phase. Presence of the beta phase in bore coatings is considered undesirable because of its brittleness and resulting failure as the coating is stressed. A high-rate triode sputtering system with a cylindrical coating geometry was used to produce thick tantalum coatings on 4340 steel smooth bore cylindrical substrates. A systematic series of tests were performed to evaluate the effects of sputtering gas species Ž . Ž . Ar, Kr, Xe and substrate temperature 100᎐300ЊC during deposition on the phase and microstructure of the coatings. Heavier sputtering gases and higher substrate temperatures were found to promote the formation of bcc-phase tantalum coatings. Use of a movable target assembly was shown to promote the production of dense, single-phase tantalum coatings.

Who reads Effect of sputtering parameters on Ta coatings for gun bore applications?

Author

D.W Matson; E.D McClanahan; J.P Rice; S.L Lee; D Windover

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0257-8972)

Published

2000

Language

EN

Field

Engineering (Physical Sciences)