Effects of Prilling Process on the Microstructures and Electrical Properties of Lanthanum Chromite Ceramics

Abstract:

Lanthanum chromite(LaCrO₃) with different amounts of PVB solution were synthesized by classical solid state reaction. We have studied the effects of different amounts of PVB solution( 0 mL, 1 mL, 2 mL, 3 mL) during prilling process on the microstructures and electrical properties of LaCrO₃. The scanning electron microscopes, relative densities and resistivities of samples suggest: (1) the sinterability of LaCrO₃ is optimal among samples when adding 1 mL PVB solution to LaCrO₃ powder during prilling process. (2) sample with 1 mL PVB solution has the highest resistivity, while other counterparts’ resistivities have no distinct correspondence with the amount of PVB solution.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 782-787
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.782
• Online since: August 2018
• Authors: Xing Lian Yin, Qing Zhao*, Dong Lin He, Ai Min Chang
• Keywords: Electrical Properties, Lanthanum Chromite, Microscopic Morphology, Prilling Process

References

[1] L. Groupp H.U. Anderson, Densification of La1-xSixCrO3, J. Am. Ceram. Soc.59(1976) 449-450.

DOI: 10.1111/j.1151-2916.1976.tb09517.x

[2] J.W. Fergus, Lanthanum chromite-based materials for solid oxide fuel cell interconnects,Solid State Ion.171(2004) 1-15.

DOI: 10.1016/j.ssi.2004.04.010

[3] British MHD Collaborative Committee, HeywoodJB. Open-cycle MHD power generator: results of research, Pergamon Press,(1969).

[4] M.A. Andrianov, V.L. Balkevich,V.ESotnikov, Use of lanthanum chromite for making electric heaters, Refract. Ind. Ceram. 21 (1980) 592-596.

DOI: 10.1007/bf01398327

[5] A. Feteira, Negative temperature coefficient resistance (NTCR) ceramic thermistors: an industrial perspective, J. Am. Ceram. Soc. 92 (2009) 967-983.

DOI: 10.1111/j.1551-2916.2009.02990.x

[6] H. Yokokawa,S. Natsuko, K. Tatsuya,et al.,Chemicalthermodynamic considerations in sintering of LaCrO3-based perovskites, J. Electroceram.Soc. 138(1991) 1018-1027.

DOI: 10.1149/1.2085708

[7] D.H. Peck, M. Miller, D. Kobertz,Vaporization of LaCrO3: partial and integral thermodynamic properties,J. Am. Ceram. Soc.79(1996) 3266-3272.

DOI: 10.1111/j.1151-2916.1996.tb08104.x

[8] T. Takeuchi,R. Funahashi, T. Aihara, et al.,Rapid preparation of dense (La0.9Sr0.1)CrO3 ceramics by spark-plasma sintering,J. Electroceram.Soc.147 (2000) 3979-3982.

DOI: 10.1149/1.1394006

[9] SMukherjee, R Gonal, MKPatel, et al.,Microstructure characterization and electrical conductivity measurement of La1-xCaxCrO3 (x =0.25, 0.4, 0.5) prepared by aspartic acid-assisted solution combustion,J. Am. Ceram. Soc. 95 (2012) 290–295.

DOI: 10.1111/j.1551-2916.2011.04776.x

[10] H.D. Jiao, J.X. Wang, J.B. Ge, et al.,Fabrication,characterization and electrical conductivityof Ru-doped LaCrO3denseperovskites, SolidStateCommun.231 (2016) 53-56.

[11] A.L. Wagner, A.J. Jacobson, J.T. Richardson, et al.,Reaction characteristics of La0.84Sr0.16CrO3 formation, J. Mater. Sci.34 (1999) 3035-3041.

[12] Z.M. Zhong, Stoichiometric lanthanum chromite based ceramic interconnects with low sintering temperature, Solid State Ion. 177 (2006) 757-764.

DOI: 10.1016/j.ssi.2006.01.023

[13] M. Panneerselvam, K.J. Rao, Microwave preparation and sintering of industrially important perovskiteoxides:LaMO3(M=Cr,Co,Ni),J. Mater.Chem.13 (2003) 596– 601.

DOI: 10.1039/b211602b

[14] S.A. Suvorov, A.P. Shevchik, Sintering capacity of refractory composites based on lanthanum chromite,Refract. Ind. Ceram. 49 (2008) 304-306.

DOI: 10.1007/s11148-008-9086-3

[15] T. Tomonari, T. Yasuo, F. Ryoji, et al.,Rapid preparation of dense (La0.9Sr0.1)CrO3 ceramics by spark-plasma sintering,J. Electrochem. Soc. 147 (2000) 3979-3982.

[16] H.Watanabe, Ferrites: Proceedings of the ICF3,D Reidel Pub Co.(1982).

[17] A.C. Momin, E.B. Mirza, M.D. Mathews, High-temperature X-ray diffractometric studies of LaCrO3, J. Mater. Sci. Lett.10(1991) 1246-1248.

DOI: 10.1007/bf00720935