不同铁源对制备堇青石蜂窝陶瓷的影响
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摘要
以SiO_2粉、Al_2O_3粉、MgO粉为原料,Fe_2O_3、FeCl_3和Fe_2(NO_3)_3为外加剂,在空气气氛下经1400℃3 h烧成制备堇青石蜂窝陶瓷,研究以不同铁源做外加剂对堇青石蜂窝陶瓷的物相组成、显微结构和孔径分布的影响。采用XRD和SEM对烧成后试样进行物相组成分析和显微结构检测。结果表明:Fe_2O_3作为外加剂时,堇青石晶粒呈短柱状且排布方向一致,并且显微结构中有少量的微裂纹,孔径在5μm处出现分布峰值;而FeCl_3和Fe_2(NO_3)_3为外加剂时,显微结构中熔融相较多,堇青石颗粒部分呈短柱状,且部分晶粒排布方向不一致。
Cordierite honeycomb ceramics were prepared by using SiO_2,Al_2O_3 and MgO powder as raw materials,and Fe_2O_3,FeCl_3 and Fe_2(NO_3)_3 were used as additives. The cordierite honeycomb ceramics were fired at 1400 ℃ for 3 h,and the effects of different iron sources as additives on the phase composition,microstructure and pore size distribution of cordierite honeycomb ceramics were studied.The results show that cordierite grains are short columnar shape and arranged in the same direction with Fe_2O_3 additive,and a few microcracks are observed in the microstructure,the pore size distribution is concentrated in the vicinity of 5 μm. The cordierite grains are wrapped by molten phase and arranged in the different direction with FeCl_3 and Fe_2(NO_3)_3.
Cordierite honeycomb ceramics were prepared by using SiO_2,Al_2O_3 and MgO powder as raw materials,and Fe_2O_3,FeCl_3 and Fe_2(NO_3)_3 were used as additives. The cordierite honeycomb ceramics were fired at 1400 ℃ for 3 h,and the effects of different iron sources as additives on the phase composition,microstructure and pore size distribution of cordierite honeycomb ceramics were studied.The results show that cordierite grains are short columnar shape and arranged in the same direction with Fe_2O_3 additive,and a few microcracks are observed in the microstructure,the pore size distribution is concentrated in the vicinity of 5 μm. The cordierite grains are wrapped by molten phase and arranged in the different direction with FeCl_3 and Fe_2(NO_3)_3.
引文
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[2]李俊,石旭海,肖卓豪,等.氧化镁含量及原料煅烧对堇青石陶瓷热膨胀性能的影响[J].中国陶瓷工业,2016,23(4):6-10.
[3]Banjuraizah J,Mohamad H,Ahmad Z A.Thermal expansion coefficient and dielectric properties of non-stoichiometric cordierite compositions with excess Mg O mole ratio synthesized from mainly kaolin and talc by the glass crystallization method[J].Journal of Alloys and Compounds,2010,494(1-2):256-260.
[4]Kuscer D,Bantan I,Hrovat M,et al.The microstructure,coefficient of thermal expansion and flexural strength of cordierite ceramics prepared from alumina with different particle sizes[J].Journal of the European Ceramic Society,2017,37(2):739-746.
[5]张会,薛群虎,马立建.烧成温度对溶胶-凝胶法制备堇青石陶瓷性能的影响[J].耐火材料,2017,51(1):1-4.
[6]曹玉菲.车用堇青石蜂窝陶瓷催化剂载体的制备与性能研究[D].大连:大连海事大学,2013.
[7]曾令可.多孔功能陶瓷制备与应用[M].北京:化学工业出版社,2006.
[8]纪士东,郭露村.堇青石蜂窝陶瓷热膨胀特性的研究[J].陶瓷学报,2001(1):27-31.
[9]方红,侯来广,刘艳春,等.堇青石蜂窝陶瓷板的热膨胀性能优化[J].山东陶瓷,2017,40(3):7-11.
[10]王树明,梁开明.Fe2O3-Ti O2掺杂对Mg O-Al2O3-SiO2系玻璃晶化行为的影响[J].稀有金属材料与工程,2007,36(A02):319-321.
[11]Satapathy L N.Effect of water soluble binders on the green properties of alumina ceramics[J].Interceram,2000,49(6):448-453.
[12]任强,武秀兰.合成堇青石陶瓷材料的研究进展[J].中国陶瓷,2004,40(5):23-25.
[13]Shieh Y N,Rawlings R D,West D R F.Constitution of laser melted Al2O3-Mg O-SiO2ceramics[J].Materials science and technology,1995,11(9):863-869.
[14]张礼华,张云升,刘来宝,等.原料组成对利用碳铬渣制备多孔堇青石陶瓷性能的影响[J].人工晶体学报,2015,44(12):3822-3827.
[15]闫国进,王春华.煤矸石制备堇青石质多孔玻璃陶瓷的研究[J].矿业安全与环保,2009,36(6):31-33.
[16]罗凌虹,余永志,王乐莹,等.超低膨胀系数堇青石蜂窝陶瓷材料的制备[J].陶瓷学报,2013,34(2):181-185.
[17]余超,祝洪喜,邓承继,等.镁橄榄石,矾土,石英砂合成堇青石的工艺研究[J].耐火材料,2015,49(6):432-434.
[18]杨粉荣,谢笑虎,罗志勇.堇青石原料粒径对堇青石陶瓷烧结性能的影响[J].耐火材料,2017,51(1):65-67.