Abstract
Effect of β-calcium orthophosphate (β-TCP) addition (1 ∼ 10 mass%) on the high-temperature plastic deformation of hydroxyapatite (Ca10(PO4)6(OH)2: HAp) ceramics was examined. Relative densities of the HAp ceramics with 1 ∼ 10 mass% β-TCP addition obtained by the pulse-current pressure sintering at a temperature between 950 and 1000°C for 10 min always exceeded 99%, whereas the mean grain sizes were as small as around 0.2 μm. The tensile elongation of the specimen with 1 ∼ 10 mass% β-TCP addition fabricated by the pulse-current pressure sintering at 1000°C for 10 min attained 260% when the tensile test was conducted at 1000°C under the strain rate of 1.48×10-4 s-1.
