Search: onr:"swepub:oai:DiVA.org:liu-159002" >
Nanomechanical and ...
Nanomechanical and microtribological properties of yttrium thin films for photocathode engineering
-
- Broitman, Esteban (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten,SKF Res and Dev Ctr, Netherlands
-
- Lorusso, Antonella (author)
- Univ Salento, Italy; Ist Nazl Fis Nucl, Italy
-
- Perrone, Alessio (author)
- Univ Salento, Italy; Ist Nazl Fis Nucl, Italy
-
show more...
-
- Karoutsos, Vagelis (author)
- Univ Patras, Greece
-
- Vainos, Nikolaos A. (author)
- Univ Patras, Greece
-
- Gontad, Francisco (author)
- Univ Salento, Italy; Ist Nazl Fis Nucl, Italy
-
show less...
-
(creator_code:org_t)
- A V S AMER INST PHYSICS, 2019
- 2019
- English.
-
In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. - : A V S AMER INST PHYSICS. - 0734-2101 .- 1520-8559. ; 37:3
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The authors study the nanomechanical and microtribological properties of yttrium (Y) thin films deposited by pulsed laser deposition on Cu polycrystalline substrates. Nanoindentation tests reveal that such films have a high hardness of H = 2.3 GPa and a reduced elastic modulus of 71.7 GPa with respect to the Cu substrates. The friction coefficient between a diamond tip and the Y film reaches a steady state value of mu similar to 0.34, lower than that for the Cu (mu similar to 0.38). Moreover, nano-scratch experiments show that Y films are more scratch-resistant than the Cu substrates, probably due to their greater hardness, higher elastic recovery, and lower friction coefficient. Their results confirm that the mechanical and tribological properties of the Y films are suitable for designing and fabricating scratch-resistant hybrid photocathodes and can reduce instabilities and unwanted discharges in the cavity of the radio-frequency gun. Furthermore, the low surface roughness and the low work function of the material are important characteristics for a photocathode based on the Y thin film for the production of high-brightness electron beams. Published by the AVS.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database