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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12679
Title: Development of input output relationships for self-healing Al 2O3/SiC ceramic composites with Y2O3 additive using design of experiments
Authors: Mohanty D.
Sil A.
Maiti K.
Published in: Ceramics International
Abstract: Al2O3/SiC ceramic composites with Y2O 3 as an additive, was synthesized using the Taguchi method of design of experiments, so as to develop statistically sound input output relationships. The proportion of SiC was varied from 12 to 21 vol.% whereas that of Y 2O3 was varied from 2.5 to 4 vol.%. The composites were sintered at 1500 °C for a soaking time period of 12 h in an air atmosphere. Cracks were induced on the composite surface using a Vickers indenter with a load varying between 20 and 40 kg. Fractographical analyses have been carried out using optical and/or scanning electron microscopy to investigate the surface crack propagation behavior. Thermal aging at 1300 °C in the time range of 0.5-12.5 h was applied to find optimal conditions for healing of the pre-cracked samples. The output parameters such as crack length, healed crack length, hardness and fracture toughness of the samples were correlated with appropriate inputs such as contents of SiC and Y2O3, crack-healing temperature, healing time, compaction pressure, indentation load using statistical analysis. Further, the extent of influence, exerted by pertinent input parameters on output parameters, was also identified. © 2011 Elsevier Ltd and Techna Group S.r.l.
Citation: Ceramics International (2011), 37(6): 1985-1992
URI: https://doi.org/10.1016/j.ceramint.2011.03.046
http://repository.iitr.ac.in/handle/123456789/12679
Issue Date: 2011
Keywords: B. Composites
Crack healing
D. Al2O3
Fracture toughness
ISSN: 2728842
Author Scopus IDs: 57196538024
7003754102
55512699800
Author Affiliations: Mohanty, D., Department of Ceramic Engineering, National Institute of Technology Rourkela, Rourkela 769008, India
Sil, A., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Maiti, K., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Corresponding Author: Sil, A.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India; email: anj_sil@yahoo.co.uk
Appears in Collections:Journal Publications [MT]

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