Susceptor-Assisted Rapid Microwave Sintering of Al-Kaolin Composite in a Single-Mode Cavity

• Autorzy: Venkatesh V.S.S. , Kumar Sunil , Patnaik Lokeswar

Identyfikatory

DOI

10.24425/amm.2023.142464

• Języki publikacji: EN

Abstrakty

EN

The present research addresses the low-temperature sintering of 4% kaolin clay reinforced aluminium composite using susceptor-aided microwave sintering at 2.45 GHz frequency. Kaoline clay the naturally available mineral in the north-eastern regions of india. The study aims to convert this kaoline clay into the value added product with enhanced mechanical properties. The Al-x% Kaolin (x = 2, 4, 6, 8, 10) composite was fabricated through the powder metallurgy process by the application of 600 MPa compaction pressure. The composite corresponding to optimum ultimate tensile strength (U.T.S) was subjected to single-mode cavity microwave-assisted sintering by varying the sintering temperatures as 500°C, 550°C and 600°C. The effect of incorporating kaolin clay on the dielectric characteristics of composite powders, as well as the effect of sintering temperature on the microstructural changes and mechanical characteristics of Al-4%Kaolin composites were also examined. Results concluded that the addition of 4 wt% kaolin powder improves the dielectric characteristics of the composite powder. The maximum Hardness. Compression strength and U.T.S of 97 Hv, 202 MPa and 152 MPa respectively achieved for the Al-4% Kaolin composite sintered at 550°C. The higher fracture toughness of 9.56 Ma. m^1/2 reveals the ductile fracture for the composite sintered at 550°C.

Słowa kluczowe

EN

kaolin reinforcement; microwave sintering; mechanical properties; powder metallurgy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 2
• Strony: 799--806
• Opis fizyczny: Bibliogr. 37 poz., fot., rys., tab.

Twórcy

autor

Venkatesh V.S.S.

• G.M.R Institute of Technology, Rajam, Andhra Pradesh, India

• https://orcid.org/0000-0001-8639-8707

autor

Kumar Sunil

• Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai, India

• https://orcid.org/0000-0002-0878-1804

autor

Patnaik Lokeswar

• School of Mechanical Engineering, Sathyabama Institute of Science and Technology (Deemed to Be University), Chennai, Tamil Nadu, 600 119, India

• https://orcid.org/0000-0003-3527-0687

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