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논문 기본 정보

자료유형
학술저널
저자정보
K. Raja (Anna University Regional Campus Coimbatore) M. Dhanabal (V.S.B. Engineering College) Bipin Kumar Singh (Sri Eshwar College of Engineering) P. Ganeshan (Sri Eshwar College of Engineering)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research Vol.25 No.1
발행연도
2024.2
수록면
79 - 84 (6page)

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초록· 키워드

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Self-lubricating composite, comprises of CuO/ZTA is developed for its application as cutting inserts. The powders of zirconiatoughened alumina (ZTA) is prepared through co-precipitation process, further mixed with MgO particles (act as sinteringaid) and CuO (provide self-lubrication) using mechanical assistance. After mixing the homogeneous composites are usedto fabricate the Inserts obeying powder metallurgy process sintered through Hot isostatic pressing (HIP) and cold presstechnique. The sintered samples are cut to size using diamond wheel on tool grinder machine. The geometry of inserts aremaintained according the international (ISO) standard SNUN 120408. The mechanical characterizations of developedinserts are carried out on mirror polished samples. Crack bridging and crack deflection are the influential phenomenonon the fracture toughness, whereas impurity phases of CuO at grain boundary result in little decrement in hardness. Aftermechanical characterization the inserts are used to machine AISI 4340 steel on conventional N-26 lathe. Flank wear after 5min of machining for all inserts are calculated at fixed set of machining parameters to explore the performance of indigenouslydeveloped inserts. The self-lubrication phenomenon showed its effect on tool life i.e. thin layer (Patchy layer) formationincreases the life of novel inserts.

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