Magnetic and Elastic Properties of Nanocomposites Containing Soft (Ni) and Hard (SrFe12O19) Magnetic Particles

2013 ◽  
Vol 203-204 ◽  
pp. 310-314 ◽  
Author(s):  
Marian Kubisztal ◽  
Artur Chrobak ◽  
Julian Kubisztal ◽  
Jozef Stabik ◽  
Agnieszka Dybowska ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Elastic Properties ◽  
Elastic Deformation ◽  
Magnetic Particles ◽  
Size Reduction ◽  
Magnetic Parameters ◽  
Ni Powder ◽  
Powder Particles ◽  
Epoxy Resin Coating ◽  
Vibrating Reed

In the present paper magnetic and elastic properties of the Ni+SrFe12O19 nanocomposites were examined in detail. Samples were in two forms: i) mechanically pressed cylindrical pellets and ii) filled polymer (amine-epoxy resin) coating on aluminum substrate. The so called apparent Young’s modulus was determined by measurements of the free flexural vibrations frequency by means of vibrating reed technique. Magnetic research was carried out using VSM magnetometer. It was shown that replacement of SrFe12O19 with nano Ni powder results in an increase in material resistivity to elastic deformation. The influence of size reduction of SrFe12O19 powder particles on magnetic parameters of the studied nanocomposites were discussed in detail.

Sodium Fluoride-Assisted Hydrothermal Exfoliation of Graphite into Graphene as Filler of Epoxy Resin Coating To Protect Aluminum

2019 ◽  
Vol 123 (45) ◽  
pp. 27969-27977 ◽  
Author(s):  
Shengkai Yang ◽  
Kelei Zhuo ◽  
Zezhong Zhang ◽  
Jianming Liu ◽  
Guangyue Bai ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Sodium Fluoride ◽  
Resin Coating ◽  
Epoxy Resin Coating

Microstructure and properties of cold sprayed composite coatings

2017 ◽  
Vol 2 (81) ◽  
pp. 49-55
Author(s):  
A. Góral ◽  
W. Żórawski ◽  
M. Makrenek ◽  
S. Kowalski
Keyword(s):  
Design Methodology ◽  
Wide Spectrum ◽  
Composite Coatings ◽  
Young Modulus ◽  
Lower Surface ◽  
Al Alloy ◽  
Hard Particles ◽  
Ni Powder ◽  
Powder Particles ◽  
Alumina Addition

Purpose: The composite coatings containing incorporated ceramic achieve a wide spectrum of enhanced properties, resulting from a combination of features from a ductile matrix and hard particles. This article attempts to explain how the alumina addition to Ni powder influences the microstructure and mechanical properties of the composite Ni-Al2O3 coatings cold sprayed on the 7075 Al alloy. Design/methodology/approach: The coatings were formed during a deposition of the powder particles step by step which impacts with high velocities onto the substrate, deform, and adhere to it or to other particles. Findings: The incorporation of Al2O3 in the Ni matrix induced a larger plastic deformation of the powder particles and reduced the porosity of the coatings. The Ni-Al2O3 coatings were characterized by a lower surface roughness compared to Ni deposits. The Young modulus of the Ni-Al2O3 coatings were found to be higher than Ni coating.

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