Fig. 7
From: Fabrication of naturel pumice/hydroxyapatite composite for biomedical engineering
FTIR spectra of 5 wt% NP-BHA (a, c) and 10 wt% NP-BHA (b, d) composites sintered at different temperatures, in two spectral regions : 550–650 cm−1 (a, b) and 800–1200 cm−1 (c, d)