Articles
  • Ceramic composites derived from polysilazane with the addition of silicon carbide

  • Alfian Noviyantoa,b,*, Amirudin Wibowoc, Galuh Sukmarania, Retno Kusumaningruma, Fiqhi Fauzia,
    Alvin Muhammad Habieba, Muhamad Ikhlasul Amald and Nurul Taufiqu Rochmand

  • aNano Center Indonesia, Jl. PUSPIPTEK, South Tangerang, Banten 15314 Indonesia
    bDepartment of Mechanical Engineering, Mercu Buana University, Jl. Meruya Selatan, Kebun Jeruk, Jakarta 11650, Indonesia
    cResearch Center, Mercu Buana University, Jl. Meruya Selatan, Kebun Jeruk, Jakarta 11650, Indonesia
    dResearch Center for Metallurgy and Materials, Indonesian Institute of Sciences, PUSPIPTEK, South Tangerang, Banten 15314, Indonesia

Abstract

Ceramic composites from the polysilazane with the addition of silicon carbide (SiC) was successfully sintered by a hot pressing furnace at 1,600-1,800 ºC for 1 h under the applied pressure of 20 MPa in a nitrogen atmosphere. The addition of SiC did not influence the densification of sintered polysilazane. However, the phases generated during sintering were affected by the addition of SiC, resulting in the multi-phases of sintered polysilazane/SiC composite. The formation of SiC, Si3N4, Si2N2O, and SiO2 phases were observed in the sintered polysilazane/SiC composite. The highest hardness of sintered polysilazane was obtained with the addition of SiC sinter at 1,700 ºC, i.e., 24.3 ± 1.1 GPa, and decreased to 21.8 ± 0.7 GPa at 1,800 ºC. This is due to the sintered polysilazane/SiC composite at 1,700 ºC possess fine microstructure compared to 1,800 ºC. Meanwhile, the sintered polysilazane experienced significant grain growth at 1,700 ºC, thus the hardness of this sample was lower than sintered polysilazane/SiC composite.


Keywords: Polysilazane, Silicon carbide, Sintering, Phase, Microstructure

This Article

  • 2020; 21(3): 326-330

    Published on Jun 30, 2020

  • 10.36410/jcpr.2020.21.3.326
  • Received on Nov 25, 2019
  • Revised on Jan 21, 2020
  • Accepted on Feb 7, 2020

Correspondence to

  • Alfian Noviyanto

  • aNano Center Indonesia, Jl. PUSPIPTEK, South Tangerang, Banten 15314 Indonesia
    bDepartment of Mechanical Engineering, Mercu Buana University, Jl. Meruya Selatan, Kebun Jeruk, Jakarta 11650, Indonesia
    Tel : +62-21-75675177

  • E-mail: a.noviyanto@nano.or.id