TY - JOUR
T1 - Wetting of Thermally Grown Oxide Layer on the C36000 Copper Alloy Surfaces
AU - Nyong, Aniedi AU - Rohatgi, Pradeep
JO - Journal of Engineering and Applied Sciences
VL - 9
IS - 1
SP - 6
EP - 11
PY - 2014
DA - 2001/08/19
SN - 1816-949x
DO - jeasci.2014.6.11
UR - https://makhillpublications.co/view-article.php?doi=jeasci.2014.6.11
KW - Oxide
KW -nanowires
KW -wenzel
KW -cassie-baxter
KW -wetting
KW -copper alloy
AB - Thermal oxidation of C36000 copper alloy in N2-5
wt. % O2 and N2-12 wt. % O2 was used to grow
nanowires on the surfaces of the substrate. Energy dispersive X-ray analysis
of the nanowires confirmed their composition as ZnO. The dimensions of the ZnO
nanowires, as well as the thickness of the oxide layer varied with the thermal
oxidation parameters of time and weight percentage of oxygen. The measured contact
angles of water drops on the surfaces of these samples showed a dependency on
the values of the fractional surface area of the ZnO nanowires as well as on
the oxide layer thickness. An anti-wetting surface with water contact angle
of 142° was obtained after 2 h of thermal oxidation of the C36000 copper
alloy in N2-12 wt. % O2, corresponding to a Cassie-Baxter
wetting state with growth of ZnO nanowires on convoluted oxide layer.
ER -