Microstructure and Mechanical Properties of Thermally sprayed silica/nylon nanocomposites

Autor: Linda S. Schadler, Ronald W. Smith, K. O. Laut, E. Petrovicova
Rok vydání: 1997
Předmět:
Zdroj: Journal of Thermal Spray Technology. 6:475-485
ISSN: 1544-1016
1059-9630
DOI: 10.1007/s11666-997-0034-4
Popis: High-velocity oxyfuel thermal spray processing was used to produce ceramic/polymer (silica/nylon) nanocomposite coatings. By optimizing spray parameters such as nozzle design, spray distance, oxygen-to-fuel ratio, powder feed position, and substrate cooling, dense coatings with relatively uniform particulate distribution could be achieved. Compared to pure nylon coatings, scratch resistance improved by 30 % and wear resistance by 50 %. The surface chemistry of the silica filler affected the final coating properties. Silica particles with a hydrophobic (methylated) surface resulted in better mechanical properties than those with a hydrophilic (hydroxylated) surface.
Databáze: OpenAIRE