Mechanical and Microstructural Features of Ceramic Hollow Spheres

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In this study two different types of hollow sphere were examined by mechanical, geometrical and microstructural measurements, and the fracture force, geometrical properties and chemical composition were determined. The diameter of the „01 globocer” type specimens was 2.37 mm on average, while the value for the „03 globocer” type specimens was 6.88 mm, both were smaller than the nominal diameter. The average deviation from the circularity of the 01 globocer specimens was 8 %, the value for the 03 globocer specimens was 6 %, while the average wall porosity was 53±3 % and 56±3 % respectively. The surface of the hollow spheres was uneven, which has an impact on the contact surfaces during pressure tests, which affects the fracture force values. The average value of the fracture force of 01 globocer spheres was 42 N, and of 03 globocer hollow spheres was 288 N. The diameter had a bigger impact on the fracture force values of the type 01 specimens than in the case of 03.

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  • [1] Gupta N. Rohatgi P. K.: 4.15 Metal Matrix Syntactic Foams. In: Comprehensive Composite Materials II. Elsevier Oxford 2018. 364–385.

  • [2] Szlancsik A. Katona B. Károly D. Orbulov I. N.: Notch (In)Sensitivity of Aluminum Matrix Syntactic Foams. Materials 12/574. (2019) 15.

  • [3] Zhang Q. Lee P. D. Singh R. Wu G. Lindley T. C.: Micro-CT characterization of structural features and deformation behavior of fly ash/aluminum syntactic foam. Acta Materialia 57. (2009) 3003–3011.

  • [4] Ferguson J. B. Santa Maria J. A. Schultz B. F. Rohatgi P. K.: Al–Al2O3 syntactic foams–Part II: Predicting mechanical properties of metal matrix syntactic foams reinforced with ceramic spheres. Materials Science and Engineering A 582. (2013) 423–432.

  • [5] Omar M. Y. Xiang C. Gupta N. Strbik O. M. Cho K.: Data characterizing flexural properties of Al/Al2O3 syntactic foam core metal matrix sandwich. Data Br 5. (2015) 564–571.

  • [6] Katona B. Szlancsik A. Tábi T. Orbulov I. N.: Compressive characteristics and low frequency damping of aluminium matrix syntactic foams. Materials Science and Engineering 739. (2019) 140–148.

  • [7] Cox J. Luong D. D. Shunmugasamy V. C. Gupta N. Strbik O. M. Cho K.: Dynamic and Thermal Properties of Aluminum Alloy A356/Silicon Carbide Hollow Particle Syntactic Foams. Metals 4. (2014) 530–548.

  • [8] Pérez L. Villalobos M. Órdenes C. Drew R. A. L. Ruiz-Aguilar C. Alfonso I.: Elastic Modulus Estimation for Copper Syntactic Foams Reinforced with Iron Hollow Spheres of Different Wall Thicknesses. Journal of Materials Engineering and Performance 28/1. (2019) 100–106.

  • [9] Taherishargh M. Belova I. V. Murch G. E. Fiedler T.: The effect of particle shape on mechanical properties of perlite/metal syntactic foam. Journal of Alloys and Comppunds 693. (2017) 55–60.

  • [10] Fiedler T. Taherishargh M. Krstulovic-Opara L. Vesenjak M.: Dynamic compressive loading of expanded perlite/aluminum syntactic foam. Materials Science and Engineering A 626. (2015) 296–304.

  • [11] Szlancsik A. Katona B. Orbulov I. N. Taherishargh M. Fiedler T.: Fatigue properties of EP/A356 aluminium matrix syntactic foams with different densities. IOP Conference Series: Materials Science and Engineering 426. (2018) 8p.

  • [12] Dong X.L. Gao Z.Y. Yu T.X.: Dynamic crushing of thin-walled spheres: An experimental study. International Journal of Impact Engineering 35/8. (2008) 717–726.

  • [13] Ruan H. H. Gao Z. Y. Yu T. X.: Crushing of thinwalled spheres and sphere arrays. International Journal of Mechanical Science 48/2. (2006) 117–133.

  • [14] Song J. Sun Q. Luo S. Arwade S. R. Gerasimidis S. Guo Y. Zhang G.: Compression behavior of individual thin-walled metallic hollow spheres with patterned distributions of microporosity. Materials Science and Engineering A 734. (2018) 453–475

  • [15] Finney J. L.: Random packings and the structure of simple liquids I. The geometry of random close packing. Royal Society of London A 319/1539. (1970) 479–493.

  • [16] Gupta N. Woldesenbet E. Mensah P.: Compression properties of syntactic foams: effect of cenosphere radius ratio and specimen aspect ratio. Composites Part A: Applied Science and Manufacturing 35/1. (2004) 103–111.

  • [17] Kiser M. He M. Y. Zok F. W.: The mechanical response of ceramic microballoon reinforced aluminum matrix composites under compressive loading. Acta Materialia 47/9. (1999) 2685–2694.

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