Microwave sintering of biogenic hydroxyapatite ceramics for reconstructive surgery

Tovstonoh, Hanna; Sych, Olena; Skorokhod, V. V.

doi:10.2298/pac1401001t

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Sintering is acute for HAp ceramic, shaping micro-structural properties. Tovstonoh, et.al [3] has researched on the sintering of bovine bone by calcination at 800 ºC for 3 h and sintering by microwave at 1000 ºC for 5 to 30 minutes. He has mentioned that the total porosity of biogenic hydroxyl apatite was not dependent on sintering time.…”

Section: Introductionmentioning

confidence: 99%

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Effect of microwave conditions on sintering of hydroxyapatite ceramics

Faeghinia

Ebadzadeh

2020

SCI SINTER

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In this work, Hydroxyapatite (HAp) was sintered by microwave and compared with the sintered samples by conventional method. The power levels of microwave were 450, 600, 900 W and the sintering temperatures were in the range from 750 to 1000 ?C without isothermal holding. It was shown that the using of higher power level at the same heating temperature increases the density of sintered samples. Samples sintered in microwave at 1000 ?C by 900 W power reached a higher density of 95 % compared to the conventional process (85 %), however in the case of using 450 W power, the densification trend was almost similar to the conventional one. HAp to TCP phase transformation was not detected at 1000 ?C; however, the preferred growth of (211) planes corresponded to circular morphology was observed. Microstructural observations showed larger grains (500 nm) and porosities (300 nm) in the traditional sintered samples compared to the samples, which were sintered by microwave (200 nm and 100 nm, respectively).

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Section: Introductionmentioning

confidence: 99%

“…Mangkonsu, et.al [4] have compared the usual furnace and microwave sintering of calcium phosphate at 1300 ºC and reached to 3.15 g/cm 3 density, but due to the α-TCP formation the expansion and cracks on the surface of their samples were reported. They also showed that both conventional and microwave sintered samples were biocompatible.…”

Section: Introductionmentioning

confidence: 99%