Tailored pore structures and mechanical properties of porous alumina ceramics prepared with corn cob pore-forming agent

被引:14
作者
Dele-Afolabi, T. T. [1 ]
Hanim, M. A. Azmah [1 ,2 ]
Ojo-Kupoluyi, O. J. [1 ]
Calin, R. [3 ]
Zuhri, M. Y. M. [1 ]
机构
[1] Univ Putra Malaysia, Fac Engn, Dept Mech & Mfg Engn, Serdang 43400, Selangor, Malaysia
[2] Univ Putra Malaysia, Adv Engn Mat & Composites Res Ctr, Fac Engn, AEMC, Serdang 43400, Malaysia
[3] Kirikkale Univ, Fac Engn, Dept Met & Mat Sci Engn, Kirikkale, Turkey
关键词
corn cob; hardness; microstructure; diametral tensile strength; pore size; porosity; porous alumina; THERMAL-CONDUCTIVITY; STARCH; POROSITY; MICROSTRUCTURE; SIZE; FABRICATION; PYROLYSIS; STRENGTH;
D O I
10.1111/ijac.13621
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, the effects of porosity and different particle sizes of pore-forming agent on the mechanical properties of porous alumina ceramics have been reported. Different grades of porous alumina ceramics were developed using corn cob (CC) of different weight contents (5, 10, 15, and 20 wt%) and particle sizes (<63 mu m, 63-125 mu m and 125-250 mu m) as the pore-forming agent. Experimental results showed that total porosity and pore cavity size of the porous alumina ceramics increased with rising addition of CC pore former. Total porosity increased with increasing particle size of CC with the Al2O3-(<63)CC(5)sample exhibiting the lowest total porosity of 41.3 vol% while the highest total porosity of 68.1 vol% was exhibited by the Al2O3-125-250CC20. The particle size effect of CC on the mechanical properties revealed that diametral tensile strength and hardness of the porous alumina ceramics deteriorated with increasing particle size of CC pore former. The Al2O3-(<63)CC(5)sample exhibited the highest diametral tensile strength and hardness of 25.1 MPa and 768.2 HV, respectively, while Al2O3-(125-250)CC(20)exhibited the lowest values of 1.1 MPa and 35.9 HV. Overall, porous alumina ceramics with the smallest pore sizes under each particle size category exhibited superior mechanical properties in their respective categories.
引用
收藏
页码:244 / 252
页数:9
相关论文
共 39 条
[1]   Mechanical properties of natural fibre-reinforced composites [J].
Bhowmick, Manik ;
Mukhopadhyay, Samrat ;
Alagirusamy, Ramasamy .
TEXTILE PROGRESS, 2012, 44 (02) :85-140
[2]   Preparation of porous Al2O3 ceramics by starch consolidation casting method [J].
Chen, Zhiwei ;
Xu, Guogang ;
Cui, Hongzhi ;
Zhang, Xueying ;
Zhan, Xiaoyuan .
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2018, 15 (06) :1550-1558
[3]   Investigating the effect of porosity level and pore former type on the mechanical and corrosion resistance properties of agro-waste shaped porous alumina ceramics [J].
Dele-Afolabi, T. T. ;
Hanim, M. A. Azmah ;
Norkhairunnisa, M. ;
Sobri, S. ;
Calin, R. .
CERAMICS INTERNATIONAL, 2017, 43 (12) :8743-8754
[4]   Research trend in the development of macroporous ceramic components by pore forming additives from natural organic matters: A short review [J].
Dele-Afolabi, T. T. ;
Hanim, M. A. Azmah ;
Norkhairunnisa, M. ;
Sobri, S. ;
Calin, R. .
CERAMICS INTERNATIONAL, 2017, 43 (02) :1633-1649
[5]   Effect of agro-waste pore formers on the microstructure, hardness, and tensile properties of porous alumina ceramics [J].
Dele-Afolabi, Temitope ;
Ariff, Azmah Hanim Mohamed ;
Mazlan, Norkhairunnisa ;
Sobri, Shafreeza ;
Calin, Recep ;
Nur, Ismarrubie Zahari .
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2018, 15 (04) :1060-1071
[6]  
Du Y., 2016, J MAT SCI ENG, V5, P1
[7]   Pyrolysis characteristics and kinetic parameters determination of biomass fuel powders by differential thermal gravimetric analysis (TGA/DTG) [J].
El-Sayed, Saad A. ;
Mostafa, M. E. .
ENERGY CONVERSION AND MANAGEMENT, 2014, 85 :165-172
[8]   Effect of template size on microstructure and strength of porous silicon carbide ceramics [J].
Eom, Jung-Hye ;
Kim, Young-Wook .
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2008, 116 (1358) :1159-1163
[9]   Stresses and failure in the diametral compression test [J].
Fahad, MK .
JOURNAL OF MATERIALS SCIENCE, 1996, 31 (14) :3723-3729
[10]   Characterization of different starch types for their application in ceramic processing [J].
Gregorová, E ;
Pabst, W ;
Bohacenko, I .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (08) :1301-1309