Abstract
Glass powder of composition 70TeO2-20WO3-10La2O3 (mol%) was sintered to high density within a hot-press using a sacrificial powder as a pressure-transmitting medium. The potassium chloride (KCl) sacrificial power was found to minimize sample friction and adhesion to the die during pressing, facilitated the extraction of the densified sample from the die and was easily removable due to its water solubility. This fabrication process maximizes pressure transference to the green-body and enables sintered parts with optical quality comparable to those obtained by the melt-quench technique.
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