Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications
Ceramics are known for their high temperature stability, hardness, wear resistance and chemical inertness which make them an ideal choice in designing devices for extreme conditions. Machining of ceramics using conventional methods are ruled out owing to their extreme hardness and brittleness. Non-t...
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University of Novi Sad
2025-06-01
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| Series: | Processing and Application of Ceramics |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1820-6131/2025/1820-61312502190S.pdf |
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| author | Sachidananda T.G. Chandrashekar Adake |
| author_facet | Sachidananda T.G. Chandrashekar Adake |
| author_sort | Sachidananda T.G. |
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| description | Ceramics are known for their high temperature stability, hardness, wear resistance and chemical inertness which make them an ideal choice in designing devices for extreme conditions. Machining of ceramics using conventional methods are ruled out owing to their extreme hardness and brittleness. Non-traditional machining techniques, such as electrical discharge machining (EDM), can precisely shape these ceramics with exceptional resolution without direct contact, provided the ceramics possesses a minimum electrical conductivity of 1 S/m. A common approach to machine ceramics is to prepare ceramic composites by reinforcing conducting elements in a ceramic matrix followed by thermal treatment such as spark plasma sintering or hot pressing. In this research work, electrically conductive alumina composites were prepared by reinforcing multi-walled carbon nanotubes (MWCNT) using an aqueous slip casting route followed by pressure-less sintering. Significant changes were observed in rheological, electrical and mechanical properties of the sintered alumina composites upon reinforcement of MWCNT. Thus, alumina with 2 wt.% of MWCNT has an electrical conductivity of 1.9549 S/m which is sufficient to process the composites in EDM. The successful machining of alumina-MWCNT composites in EDM also confirmed sustainable slip casting route for MWCNT in alumina matrix along with adequate electrical conductivity for EDM. |
| format | Article |
| id | doaj-art-2b7de455a6e744ec809068f3f3b635c7 |
| institution | Kabale University |
| issn | 1820-6131 2406-1034 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | University of Novi Sad |
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| series | Processing and Application of Ceramics |
| spelling | doaj-art-2b7de455a6e744ec809068f3f3b635c72025-08-20T03:55:53ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342025-06-0119219020010.2298/PAC2502190SInfluence of MWCNT distribution in alumina prepared by colloidal processing for EDM applicationsSachidananda T.G.0https://orcid.org/0000-0002-5650-7471Chandrashekar Adake1https://orcid.org/0000-0003-3835-0041Department of Mechanical Engineering, KLE Dr MS Sheshgiri College of Engineering and Technology, Belagavi, Karnataka, IndiaDepartment of Mechanical Engineering, KLE Dr MS Sheshgiri College of Engineering and Technology, Belagavi, Karnataka, IndiaCeramics are known for their high temperature stability, hardness, wear resistance and chemical inertness which make them an ideal choice in designing devices for extreme conditions. Machining of ceramics using conventional methods are ruled out owing to their extreme hardness and brittleness. Non-traditional machining techniques, such as electrical discharge machining (EDM), can precisely shape these ceramics with exceptional resolution without direct contact, provided the ceramics possesses a minimum electrical conductivity of 1 S/m. A common approach to machine ceramics is to prepare ceramic composites by reinforcing conducting elements in a ceramic matrix followed by thermal treatment such as spark plasma sintering or hot pressing. In this research work, electrically conductive alumina composites were prepared by reinforcing multi-walled carbon nanotubes (MWCNT) using an aqueous slip casting route followed by pressure-less sintering. Significant changes were observed in rheological, electrical and mechanical properties of the sintered alumina composites upon reinforcement of MWCNT. Thus, alumina with 2 wt.% of MWCNT has an electrical conductivity of 1.9549 S/m which is sufficient to process the composites in EDM. The successful machining of alumina-MWCNT composites in EDM also confirmed sustainable slip casting route for MWCNT in alumina matrix along with adequate electrical conductivity for EDM.https://doiserbia.nb.rs/img/doi/1820-6131/2025/1820-61312502190S.pdfaluminamwcntslip castingelectrical and mechanical propertiesedm application |
| spellingShingle | Sachidananda T.G. Chandrashekar Adake Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications Processing and Application of Ceramics alumina mwcnt slip casting electrical and mechanical properties edm application |
| title | Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications |
| title_full | Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications |
| title_fullStr | Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications |
| title_full_unstemmed | Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications |
| title_short | Influence of MWCNT distribution in alumina prepared by colloidal processing for EDM applications |
| title_sort | influence of mwcnt distribution in alumina prepared by colloidal processing for edm applications |
| topic | alumina mwcnt slip casting electrical and mechanical properties edm application |
| url | https://doiserbia.nb.rs/img/doi/1820-6131/2025/1820-61312502190S.pdf |
| work_keys_str_mv | AT sachidanandatg influenceofmwcntdistributioninaluminapreparedbycolloidalprocessingforedmapplications AT chandrashekaradake influenceofmwcntdistributioninaluminapreparedbycolloidalprocessingforedmapplications |