Optimizing the Synthesis of Alumina Inserts Using Hot Isostatic Pressing (HIP)

International Conference on Advances in Manufacturing and Materials Engineering 2017

机械制造;材料科学

Ariff, T.F.^1 ; Azhar, A.Z.^1 ; Sariff, M.N.^1 ; Rasid, S.N.^1 ; Zahari, S.Z.^1 ; Bahar, R.^1 ; Karim, M.^1 ; Nurul Amin, A.K.M.^1

Department of Manufacturing and Materials Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Kuala Lumpur

53100, Malaysia^1

关键词: Aluminium oxide;    Heat characteristics;    Heat retention;    Optimum parameters;    Sintering condition;    Sintering time;    Synthesis method;    Turning process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/290/1/012044/pdf
DOI  :  10.1088/1757-899X/290/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Alumina or Aluminium Oxide (Al2O3) is well known for its high strength and hardness. Its low heat retention and low specific heat characteristics make it attractive to be used widely as a cutting tool for grinding, milling and turning processes. Various synthesis methods have been used for the purpose of enhancing the properties of the alumina inserts. However, the optimization process using Hot Isostatic Pressing (HIP) has not been performed. This research aims in finding the optimum parameters in synthesizing the alumina inserts (98Al2O31.6ZrO20.4MgO, 93Al2O36.4ZrO20.6MgO and 85Al2O314.5ZrO20.5MgO) using HIP at different temperatures (1200, 1250 and 1300°C) and sintering time (10, 30 and 60 minutes). Hardness, density, shrinkage and microstructure using SEM were analysed. The optimum sintering condition for the alumina insert was found in 98Al2O31.6ZrO20.4MgO sintered at 1300°C for 60 minutes for it exhibited the highest values of hardness (1917HV), density (3.95g/cm3), shrinkage (9.6%).