Physical and surface characteristics of the mechanically alloyed SiBCN powder

Physical and surface characteristics of the mechanically alloyed SiBCN powder
复制标题

机械合金化 SiBCN 粉末的物理和表面特性

DOI:
10.1016/j.ceramint.2012.05.012
复制
发表时间:
2012-12
影响因子:
5.2
通讯作者:
Zhou, Yu
Zhou, Yu
中科院分区:
材料科学1区
文献类型:
--
作者:
Zhang, Pengfei;Jia, Dechang;Yang, Zhihua;Duan, Xiaoming;Zhou, Yu

文献摘要

参考文献

被引文献

相似文献

以立方硅、六方氮化硼和石墨为原料,以Si:BN:C=2:1:3的摩尔比,在Ar气氛下高能球磨40h。利用扫描电子显微镜、氮气吸附-脱附等温线、XPS、FT-IR、X射线衍射仪、X射线衍射仪、透射电子显微镜和热重-差热分析-质谱-红外光谱(TG-DTA-MS-IR)对SiBCN粉末的物理和表面特征、微观结构和加热行为进行了研究。结果表明,球磨后的粉末为非晶态,主要由纳米一次粒子的硬团聚形成的尺寸为6.6±5.3μm的近球形团聚体组成。粉末的比表面积为24.5m2/g,比孔容为0.136207 cm³/g,平均孔径为20.3 nm。球磨后的粉末吸附水蒸气、CO和CO2,极易氧化。当在氦气氛中加热时,粉末在较低温度下解吸水蒸气、CO和CO2,并在大约1350°C到1500°C之间的温度下快速脱气CO和CO2。
A powder mixture of cubic silicon, hexagonal boron nitride and graphite, with the molar ratio of Si:BN:C=2:1:3, was high-energy ball milled for 40h, under argon atmosphere. The physical and surface characteristics, the microstructures and the behavior on heating of the as-milled SiBCN powder were carefully studied by SEM, nitrogen adsorption–desorption isotherms, XPS, FT-IR, XRD, TEM and thermogravimetry-differential thermal analysis-mass spectrometry-infrared spectroscopy (TG–DTA-MS-IR). Results show that the as-milled powder is amorphous and mainly consists of near-spherical agglomerates, 6.6±5.3μm in size deriving from the hard agglomeration of nano-primary particles. The specific surface area, the specific pore volume and the average pore diameter of the powder are 24.5m2/g, 0.136207cm³/g and 20.3nm, respectively. The as-milled powder adsorbs water vapor, CO and CO2, and it is easy to oxidize. When heated in helium atmosphere, the powder desorbs water vapor, CO and CO2at lower temperature, and rapidly degasifies CO and CO2at temperatures approximately between 1350°C and 1500°C.
DOI: 10.1016/j.msea.2007.12.010
发表时间: 2008-08
影响因子: 6.4
作者:
Zhihua Yang;Yu Zhou;D. Jia;Q. Meng
通讯作者: Zhihua Yang;Yu Zhou;D. Jia;Q. Meng
DOI: 10.1007/s10853-006-0934-6
发表时间: 2006-11-01
影响因子: 4.5
作者:
Kumar, Ravi;Cai, Y.;Aldinger, F.
通讯作者: Aldinger, F.
聚合物衍生的 SiBNC 陶瓷的热稳定性
DOI: 10.1016/j.ceramint.2009.03.043
发表时间: 2009-09-01
影响因子: 5.2
作者:
Tang, Yun;Wang, Jun;Wang, Xiaozhou
通讯作者: Wang, Xiaozhou
DOI: 10.1021/cm001031w
发表时间: 2000-08-01
影响因子: 8.6
作者:
Weinmann, M;Kamphowe, TW;Aldinger, F
通讯作者: Aldinger, F
DOI: 10.1111/j.1151-2916.2002.tb00444.x
发表时间: 2002-09
影响因子: 3.9
作者:
Guo‐Jun Zhang;Jianfeng Yang;T. Ohji
通讯作者: Guo‐Jun Zhang;Jianfeng Yang;T. Ohji