The Experts below are selected from a list of 91974 Experts worldwide ranked by ideXlab platform

Baoyan Liang - One of the best experts on this subject based on the ideXlab platform.

  • Self-propagation High-Temperature Sintering of the Ti–Al–C-diamond/BN system
    International Journal of Materials Research, 2014
    Co-Authors: Baoyan Liang, Zhiwei Wang, Le Wang, Jingxian Han, Meng Guo
    Abstract:

    Abstract A mixture of Ti, Al, C, diamond, or c-BN powder was used as the raw material for the fabrication of a titanium aluminum carbide matrix-bonded diamond/c-BN composite using self-propagation High-Temperature synthesis. The phase composition and microstructure of the reacted products were analyzed via X-ray diffraction and scanning electron microscopy. The addition of diamond did not inhibit the synthesis of titanium aluminum carbide in the sintered product. The diamond and this matrix exhibited good bonding. However, c-BN reacted with Ti and Al in the Ti–Al–C–BN system, which resulted in the formation of small amounts of titanium aluminum carbide. TiC, TiN, and Ti(C,N) matrix-bonded diamond/c-BN composites were obtained.

  • Synthesis of phase purity V2AlC via self-propagation high temperature Sintering
    International Journal of Materials Research, 2013
    Co-Authors: Baoyan Liang
    Abstract:

    Abstract V2AlC was synthesized via self-propagation High-Temperature Sintering using V/Al/C powders as raw materials. Results showed that the main phase of the product was V2AlC in the sample from ...

  • Effect of Sn and Si on the Synthesis of Ti3Al(Sn/Si)C2 by Self-Propagating High-Temperature Sintering
    Advanced Materials Research, 2012
    Co-Authors: Baoyan Liang, Ji Feng Guo
    Abstract:

    The Ti3AlC2 was synthesized by self-propagating High-Temperature Sintering (SHS) using 3Ti/Al/2C powders as raw materials. Si or Sn was added to the raw materials in order to improve the synthesis reaction of Ti3AlC2. The result showed that the majority compounds were Ti3AlC2 and TiC in the synthesized sample. The content of Ti3AlC2 in the sample was approximate 59%. Si or Sn additives improved the synthesis of Ti3AlC2 obviously and the effect of Si additive in the reaction was much better than that of Sn. For raw materials of 3Ti/Al/2C/0.3Si, the content of Ti3AlC2 in the sample reached the maximum value of 93%.

  • Synthesis of Ti2AlC by laser-induced self-propagating High-Temperature Sintering
    Journal of Alloys and Compounds, 2010
    Co-Authors: Baoyan Liang, Mingzhi Wang, Shubin Sun, Qin Zou
    Abstract:

    Abstract The Ti2AlC was synthesized by laser-induced self-propagating High-Temperature Sintering (SHS) using 2Ti/Al/C powders as raw material. Several additives were added in the raw materials including TiC, Sn and excess Al in order to improve the reaction. The results showed that the Ti2AlC was synthesized by means of laser-induced SHS. The majority compounds were Ti2AlC and TiC in the sample. The content of the Ti2AlC in the sample was approximate 83%. The TiC or excess Al additives did not improve the synthesis of Ti2AlC. However, the Sn additive improved the synthesis of Ti2AlC obviously. For the raw material of 2Ti/Al/C/0.3Sn, the content of Ti2AlC in the sample attained approximate 95%.

D. Bouvard - One of the best experts on this subject based on the ideXlab platform.

  • In-situ synchrotron x-ray transmission microscopy of the Sintering of multilayers
    Applied Physics Letters, 2013
    Co-Authors: Z.l. Yan, O. Guillon, C.l. Martin, S. Wang, C.s. Lee, D. Bouvard
    Abstract:

    This letter reports on in-situ characterization of the high temperature Sintering of multilayer ceramic capacitors by high-resolution synchrotron x-ray imaging. Microstructural evolution was obtained in real time by a continuous recording of 2-dimensional radiographs. Anisotropic strains were measured for different layers. Quantification of defects was conducted with 3-dimensional nano-computed tomography. These in-situ observations prove that electrode discontinuities occur at the early stage of Sintering and originate from initial heterogeneities linked to the particulate nature of the starting powders. (C) 2013 AIP Publishing LLC.

She Peng-cheng - One of the best experts on this subject based on the ideXlab platform.

Z.l. Yan - One of the best experts on this subject based on the ideXlab platform.

  • In-situ synchrotron x-ray transmission microscopy of the Sintering of multilayers
    Applied Physics Letters, 2013
    Co-Authors: Z.l. Yan, O. Guillon, C.l. Martin, S. Wang, C.s. Lee, D. Bouvard
    Abstract:

    This letter reports on in-situ characterization of the high temperature Sintering of multilayer ceramic capacitors by high-resolution synchrotron x-ray imaging. Microstructural evolution was obtained in real time by a continuous recording of 2-dimensional radiographs. Anisotropic strains were measured for different layers. Quantification of defects was conducted with 3-dimensional nano-computed tomography. These in-situ observations prove that electrode discontinuities occur at the early stage of Sintering and originate from initial heterogeneities linked to the particulate nature of the starting powders. (C) 2013 AIP Publishing LLC.

Ning Li - One of the best experts on this subject based on the ideXlab platform.

  • metallization of al2o3 ceramic by magnetron sputtering ti mo bilayer thin films for robust brazing to kovar alloy
    Ceramics International, 2016
    Co-Authors: Ning Li
    Abstract:

    Abstract Ti/Mo bilayer thin films were deposited onto Al2O3 ceramic by magnetron sputtering with a subsequent high temperature Sintering to ensure the robust brazing of Al2O3 ceramic to Kovar (Fe–Ni–Co) alloy. The interface reaction process between Ti film and Al2O3 ceramic as well as the joining strength between metallized Al2O3 ceramic and Kovar alloy were investigated systematically using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, transmission electron microscopy, and electronic universal testing machine. The results show that the active Ti film can react with Al2O3 ceramic to form Ti3Al and TiO during High-Temperature Sintering process, in which the amount, size and morphology of TiO crucially depend on the Sintering temperature. As the Sintering temperature reaches 1200 °C, a plenty of spherical TiO nanoparticles with ~ 150 nm in diameter and metallic nature can be created across the Ti/Al2O3 interfaces, which can effectively act as ‘bridges’ to join Ti film to Al2O3 substrate firmly. Hence, the optimal joining strength of 69.6±3.1 MPa between metallized Al2O3 ceramic and Kovar alloy can be obtained, much better than those counterparts metallized at 900 °C and 1050 °C almost without the existence of observable TiO.