Evaluation of Densification and Shape Distortion during Supersolidus Liquid Phase Sintering of Brass Cu-28Zn Prealloyed Powder

This paper studies the effect of sintering variables such as sintering temperature and time on densification and shape distortion of Cu-28Zn prealloyed powder using response surface methodology. Sintered density and dimensional change was measured to calculate densification parameter, porosity percentage, and volumetric shrinkage and develop mathematical models, consequently. Adequacy of models was evaluated by analysis of variance, which corresponding to a 95% confidence interval. Obtained mathematical models are useful not only for high accuracy predicting of densification and shape distortion but also for selecting optimum sintering variables to achieve the desired properties.