Widyastuti, Ike, Andrijono, Djoko, Jumiadi, Jumiadi and Hakim, Luqman Studi teknologi serbuk alumina silika dengan variasi blending method terhadap sifat mekanik. pp. 79-84.

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Abstract

Powder technology is often used as a way to unite two materials with the aim of obtaining new material properties. Powder technology can also be applied to the process of making ceramics. In this study, two powder materials were combined with variations of the blending method used so that it could be seen how the differences in the distribution of hardness were through the Rockwell hardness test. This study uses alumina powder (Al2O3) as the main material and silica (SiO2) as a mixed material, with a composition of 80% Al2O3 and 20% SiO2. Stirring is carried out using three different blending methods, namely vertical rotating drum, screw blade, and paddle blades. The stirring time was carried out for 10 minutes with a rotation of 100 rpm which was then followed by pressing the specimen with a load of 10 tons. The sintering process was carried out at 1300°C and held for 1 hour. Data retrieval was carried out by performing the Rockwell hardness test. The scale used is an A scale with a diamond cone and a major load of 60 kg. The screw blade stirring method is the best stirring method for the distribution of specimen hardness because it obtains the smallest average standard deviation among other stirring methods. The smaller the average standard deviation, the smaller the deviation of the hardness distribution will be.

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