吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (2): 552-556.doi: 10.13229/j.cnki.jdxbgxb201702029

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Microstructure and properties of sintered Ti-B-C-N power

YANG Yue1, 2, LI Xue1, 2, XU Xiao-dan1, 2   

  1. 1.School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China;
    2.Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China
  • Received:2015-09-16 Online:2017-03-20 Published:2017-03-20

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Abstract: Ti-B-C-N power was sintered by hot pressing sintering and spark plasma sintering methods. The sintering temperatures were 1900 ℃ and 1450 ℃, the sintering pressing pressures were 20 MPa and 40 MPa, and the sintering times were 1 h and 3 min, respectively. The phase composition wa analyzed using X-ray Diffraction (XRD). The surface morphology and fracture morphology of the sintered samples were observed with Scanning Electron Microscope (SEM). The hardness and transverse rupture strength of the sintered samples were investigated. The results show that the sintered samples were mainly composed of phases TiB2 and TiCN, the relative densities were 97.40% and 93.06%. The density of hot pressing sample was higher and particle size was significantly grown up. The transverse rupture strengths were 259.98 MPa and 335.17 MPa, the hardness (HRA) were 78.8 and 84.9, the elastic moduli were 89.11 GPa and 162.92 GPa, respectively. The spark plasma sintered samples show better mechanical properties.

Key words: composite material, Ti-B-C-N powder, hot pressing sintering, spark plasma sintering

CLC Number: 

  • TB33
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