eprintid: 1403
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/14/03
datestamp: 2023-11-09 15:49:33
lastmod: 2023-11-09 15:49:33
status_changed: 2023-11-09 15:40:08
type: article
metadata_visibility: show
creators_name: Ku Shaari, K.Z.
creators_name: Turton, R.
title: The study of droplet impact behavior on flat surface with different surface properties
ispublished: pub
keywords: Coatings; High speed cameras; Porosity; Surface properties; Surface roughness; Diffusion in solids; Heat transfer; Liquids, Coating uniformity; Droplet impact; Industrial processs; Pharmaceutical industry; Pharmaceutical tablets; Silicon surfaces; Spreading diameters; Spreading factor, Drops
note: cited By 0
abstract: The impact behavior of a liquid droplet on solid surface is a complex phenomenon and yet is a basic component of various industrial processes particularly in the pharmaceutical industry. In this industry, film coating technique is used in tablet coating, in which coating uniformity is important especially if the coating is for functional purposes. Coating uniformity on a tablet could be affected by several factors, one of which is the impingements of droplets on its surface. In this work, the maximum spreading diameter and the initial impact behavior of a single droplet on pharmaceutical tablet surfaces and metal surfaces having different surface properties are investigated. A Charged-Coupled-Device (CCD) high-speed camera with framing rate of 2, 000, attached to a 10X microscope, was used to capture the phenomena. The results show that the initial impact behavior of a droplet is not affected by the porosity of a surface. The results on the pharmaceutical tablets, stainless steel and etched silicon surfaces show that the rougher the surface the lower the spreading factor. The droplets on all surfaces demonstrate that a droplet that produces higher spreading factor gives a lower bouncing factor. © (2010) Trans Tech Publications.
date: 2010
publisher: Trans Tech Publications Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952244591&doi=10.4028%2fwww.scientific.net%2fDDF.297-301.19&partnerID=40&md5=7f32408dbe0609f38a098406d3717a0b
id_number: 10.4028/www.scientific.net/DDF.297-301.19
full_text_status: none
publication: Defect and Diffusion Forum
volume: 297-30
pagerange: 19-24
refereed: TRUE
isbn: 3908451809; 9783908451808
issn: 10120386
citation:   Ku Shaari, K.Z. and Turton, R.  (2010) The study of droplet impact behavior on flat surface with different surface properties.  Defect and Diffusion Forum, 297-30.  pp. 19-24.  ISSN 10120386