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Abstrakt

The paper presents the application of the casting method for the production of porous composites, called syntactic foams, of the casting alloy - solid particles type. This method was used to produce composites based on Al alloys reinforced with particles of clinoptilolite, a natural mineral from the zeolite group. Before the casting process, tests were carried out on the morphology, physicochemical properties and chemical composition of the zeolite, which was obtained from a rock called zeolite tuff, mined in a quarry in Kucin, (VSK PRO-ZEO s.r.o., Slovakia). Observations of the microstructure of the produced composites were also carried out using a scanning electron microscope. Diffractometric tests of zeolite rock as delivered for research and of the produced samples reinforced with zeolite particles were also carried out. Initial studies of the density and porosity of the produced composites were performed. The usefulness of the presented method of composite production was assessed on the basis of the conducted structural tests, with particular emphasis on the particle distribution in the alloy matrix.
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Bibliografia

[1] Dyga, R. (2017). Metal foams as structural packing in the construction of process equipment. Technical Transactions Mechanics. 4, 165-178. DOI: 10.4467/2353737XCT.17.057.6368.
[2] Gupta, N. (2007). A functionally graded syntactic foam material for high energy absorption under compression. Materials Letters. 61(4-5), 979-982. https://doi.org/10.1016/j.matlet.2006.06.033.
[3] Taherishargh, M., Sulong, M.A., Belova, I.V. & Murch, G.E. (2015). On the particle size effect in expanded perlite aluminum syntactic foam. Materials and Design. 66(A), 294-303. https://doi.org/10.1016/j.matdes.2014.10.073.
[4] Borowiecka- Jamrozek, J., Depczyński, W. (2017). The effect of the addition of zeolite on the properties of a sintered copper-matrix composite. Metal 2017: 26rd international conference on metallurgy and materials (pp. 1652-1657).
[5] Gottardi, G. & Galli, E. (1985). Natural zeolites, mineral and rocks. Minerals. 18, 256-284. ISBN 3 540 13939 7.
[6] Nanbin, H., Dianyue, G., Bekkum, H. (2001). Introduction to zeolite science and practice. 2nd Completely revised and expanded edition, 137, (pp. 54-59).
[7] Gil, A. (1998). Analysis of the micropore structure of various microporous materials from nitrogen adsorption at 77 K. Adsorption, 4, 197-206.
[8] Jaroniec, M. & Choma, J. (1987). Characterization of activated carbons by distribution function of adsorption potential and micropore dimension. Materials Chemistry and Physics. 18(1-20, 103-117. https://doi.org/10.1016/0254-0584(87)90115-5.
[9] Brunauer, S., Emmett, P.H. & Teller, E. (1938). Adsorption of gases in multimolecular layers. Journal of the American Chemical Society. 60(2), 309-319. https://doi.org/10.1021/ ja01269a023.
[10] Gregg, S.J., Sing, K.S.W. (1982). Adsorption, Surface Area and Porosity. 2 Auglage. London: Academic Press.
[11] Kruk, M., Jaroniec, M. & Gadkaree, K.P. (1997). Nitrogen adsorption studies of novel synthetic active carbons. Journal of Colloid and Interface Science. 192(1), 250-256. DOI: 10.1006/jcis.1997.5009.
[12] Kruk, M., Jaroniec, M. & Sayari, A. (1997). Application of large pore MCM-41 molecular sieves to improve pore size analysis using nitrogen adsorption measurements. Langmuir. 13(23), 6267-6273. https://doi.org/10.1021/la970776m.
[13] Barrett, E.P., Joyner, L.G. & Halenda, P.P. (1951) The determination of pore volume and area distribution in porous substances. I. Computations from nitrogen isotherms. Journal of the American Chemical Society. 73(1), 373-380. https://doi.org/10.1021/ja01145a126
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Autorzy i Afiliacje

J.M. Borowiecka-Jamrozek
1
ORCID: ORCID
M. Kargul
1
ORCID: ORCID

  1. The Kielce University of Technology, Poland

Abstrakt

Recently, aluminum matrix syntactic foams (AMSFs) have become notably attractive for many different industrial areas like automotive, aerospace, construction and defense. Owing to their low density, good compression response and perfect energy absorption capacity, these advanced composite materials are also considered as strong alternatives to traditional particle reinforced composites and metal foams. This paper presents a promising probability of AMSF fabrication by means of industrial cold chamber die casting method. In this investigation, contrary to other literature studies restricted in laboratory scale, fully equipped custom-build cold chamber die casting machine was used first time and all fabrication steps were designed just as carried out in the real industrial high pressure casting applications. Main casting parameters (casting temperature, injection pressure, piston speed, filler pre-temperature and piston waiting time) were optimized in order to obtain flawless AMSF samples. The density alterations of the syntactic foams were analyzed depending upon increasing process values of injection pressure, piston speed and piston waiting time. In addition, macroscopic and microscopic investigations were performed to comprehend physical properties of fabricated foams. All these efforts showed almost perfect infiltration between filler particles at the optimized injection parameters.

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Autorzy i Afiliacje

C. Bolat
A. Goksenli

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