A high-purity alumina powder with sub-micrometer grain size was doped with 500 ppm of MgO by mixture with a magnesium nitrate water solution. The grain size distribution was determined by the linear intercept method. Vickers hardness was measured at loads ranging from 9.8-200 N, while Young's modulus and fracture toughness were obtained by four-point bending tests between 273 and 1473 K.
Fracture Toughness of High Purity Alumina at Room Temperature
Sglavo, Vincenzo Maria;
1999-01-01
Abstract
A high-purity alumina powder with sub-micrometer grain size was doped with 500 ppm of MgO by mixture with a magnesium nitrate water solution. The grain size distribution was determined by the linear intercept method. Vickers hardness was measured at loads ranging from 9.8-200 N, while Young's modulus and fracture toughness were obtained by four-point bending tests between 273 and 1473 K.File in questo prodotto:
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