ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Cavitation erosion is predominant in pipelines for liquid transportation, causingdamage to pipe wall, impeller and their accessories. The present study is focused ondevelopment of cavitation -wear resistant nano-ceramic particle-reinforced polymermatrix material; and on study of its feasibility to be used as lining material in hydraulictransportation. The polymer/nano composite is fabricated using power ultrasound in allthree process steps: synthesis of nano-dimensional particles of white fused alumina(WFA) from micron size particles, optimized blending and finally reinforcement intopoly methyl methacrylate (PMMA) matrix. The effect of ultrasonic parameters on nanocomposite/virgin polymers (like polyethylene and polypropylene) is studied bymeasuring mass loss of the materials and suspension turbidity during exposure time. Atlow frequency (20-60 kHz), cavitation intensity is predominant; this effect is utilized forfabricating sub-micron particles, and for performing accelerated cavitation erosion tests.At high frequency, acoustic streaming is predominant; this effect is utilized for blendingand reinforcing of the nano ceramic particles into polymer matrix. The size and quantityof the particles generated by cavitation erosion was analyzed by Laser Particle SizeAnalyzer (20 nm-1400 micron range). The nano-composite coupons were analyzedbefore and after the ultrasonic erosion test using SEM. It is concluded that lowfrequencysonication is a viable option for cavitaton erosion testing of ceramic/polymercomposites
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.136.191.pdf
