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Ahmad, Zainal Arifin
in Cooperation with on an Cooperation-Score of 37%
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Publications (5/5 displayed)
- 2021Effect of alkaline activator ratio on the compressive strength response of POFA-EACC mortar subjected to elevated temperaturecitations
- 2017POFA-engineered alkali-activated cementitious composite performance in acid environmentcitations
- 2016The Hardness Properties of Porcelain with Substitution of Quartz by Rice Husk Ash at Different Soaking Timecitations
- 2015In-process detection of chipping in ceramic cutting tools during turning of difficult-to-cut material using vision-based approachcitations
- 2007CORRELATION BETWEEN THE BENDING STRENGTH AND THE THICKNESS INTERLAYER OF ALUMINA-MILD STEEL FRICTION WELDED AT LOWER ROTATIONAL SPEED
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article
The Hardness Properties of Porcelain with Substitution of Quartz by Rice Husk Ash at Different Soaking Time
Abstract
An extensive studied has been done with rice husk ash (RHA) as a substitute element for quartz to produce porcelain. Rice husk (RH) was treated with HCL. The treated RH was subjected to calcinations at 700°C for six hours, then subjected to the XRF analysis. The composition of RHA and porcelain powder were mixed using a ball mill for 1.5 hours, then was pressed into pellets at a pressure of 91 MPa. The pellets were sintered at a temperature of 1200°C for 1 hour, 2 hours and 3 hours soaking time, at a heating rate of 5°C per minute. The bulk density and Vickers hardness were measured. At the soaking time of 2 hours, the maximum density and hardness were achieved at 2.45 g/cm3 and 1052 HV respectively. SEM analysis reveals a typical sequence of densification enhancement with the increasing of soaking time.