Effect of Diluent Amount on Properties of Porous NiAl

Anahtar Kelimeler:

Volume Combustion Synthesis, NiAl, Space Holder Method, Porous Intermetallic

Effect of Diluent Amount on Properties of Porous NiAl

Porous NiAl parts were formed by using Ni and Al elemental powders, preformed NiAl as diluent and NaCl particles as space holder (SH). The aim of utilizing preformed NiAl (30%-40%) as a diluent was to preserve the shape of the products. The amounts of the SH NaCl particles in NiAl were 25-50-75 vol.% and their sizes were in 300-500 µm range. Porous NiAl samples were prepared by volume combustion synthesis (VCS). The adiabatic temperatures of the Ni+Al mixtures having 30 and 40% diluent NiAl were calculated as 1638.9 and 1460.8°C, respectively. Formation of NiAl phase was verified by XRD analyses. In the green pellets, the total porosity amount was higher than the added NaCl amount. Also it was slightly higher in the product pellets than in the green pellets before VCS. Compressive strength and microhardness values of the samples which contained 30% diluent NiAl were higher than the samples which contained 40% diluent. Average compressive strength values of the products that were obtained by 25% NaCl and 30 and 40% diluent NiAl additions were 112.0±29.5 and 66.0±20.5 MPa, respectively.

Keywords:

Volume Combustion Synthesis, NiAl, Space Holder Method, Porous Intermetallic,

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Arifvianto, B., & Zhou, J. (2014). Fabrication of metallic biomedical scaffolds with the space holder method: a review. Materials, 7(5), 3588-3622. doi:10.3390/ma7053588
Banhart, J. (2001). Manufacture, characterisation and application of cellular metals and metal foams. Progress in Materials Science, 46(6), 559-632. doi:10.1016/S0079-6425(00)00002-5
Cai, X., Li, Z., Jiao, X., Wang, J., Kang, X., Feng, P., Akhtar, F., & Wang, X. (2021). Preparation of porous NiAl intermetallic with controllable shape and pore structure by rapid thermal explosion with space holder. Metals and Materials International, 27(10), 4216-4224. doi:10.1007/s12540-020-00904-5
Camurlu, H. E., & Maglia, F. (2009). Self-propagating high-temperature synthesis of ZrB2 or TiB2 reinforced Ni–Al composite powder. Journal of Alloys and Compounds, 478(1-2), 721-725. doi:10.1016/j.jallcom.2008.11.139
Jiang, Y., He, Y., & Gao, H. (2021). Recent progress in porous intermetallics: Synthesis mechanism, pore structure, and material properties. Journal of Materials Science & Technology, 74, 89-104. doi:10.1016/j.jmst.2020.10.007
Li, Z., Cai, X., Ren, X., Kang, X., Wang, X., Jiao, X., & Feng, P. (2019). Rapid preparation of porous Ni–Al intermetallics by thermal explosion. Combustion Science and Technology, 192(3), 486-492 doi:10.1080/00102202.2019.1576652
Moore, J. J., & Feng, H. J. (1995). Combustion synthesis of advanced materials: Part I. Reaction parameters. Progress in Materials Science, 39(4-5), 243-273. doi:10.1016/0079-6425(94)00011-5
Roine, A. (2002). Outokumpu HSC chemistry for windows. Chemical Reaction and Equilibrium Software with Extensive Ther-Mochemical Database. PDF
Shu, Y., Suziki, A., Takata, N., & Kobashi, M. (2019). Microstructure and mechanical property of porous nickel aluminides Fabricated by Reactive Synthesis with Space Holder Powder. MRS Advances, 4, 1515-1521. doi:10.1557/adv.2019.153
Su, X., Fu, F., Yan, Y., Zheng, G., Liang, T., Zhang, Q., Cheng, X., Yang, D., Chi, H., Tang, X., Zhang, Q., & Uher, C. (2014). Self-propagating high-temperature synthesis for compound thermoelectrics and new criterion for combustion processing. Nature Communications, 5, 4908. doi:10.1038/ncomms5908
Varma, A., Rogachev, A. S., Mukasyan, A. S., & Hwang, S. (1998). Combustion synthesis of advanced materials: principles and applications. Advances in Chemical Engineering, 24, 79-226. doi:10.1016/S0065-2377(08)60093-9
Wang, Z., Jiao, X., Feng, P., Wang, X., Liu, Z., & Akhtar, F. (2016). Highly porous open cellular TiAl-based intermetallics fabricated by thermal explosion with space holder process. Intermetallics, 68, 95-100. doi:10.1016/j.intermet.2015.09.010
Yang, X., Hu, Q., Du, J., Song, H., Zou, T., Sha, J., He, C. & Zhao, N. (2019). Compression fatigue properties of open-cell aluminum foams fabricated by space-holder method. International Journal of Fatigue, 121, 272-280. doi:10.1016/j.ijfatigue.2018.11.008