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Tổng hợp bột phosphate canxi từ lactate canxi và photphat hydroammonium để chế tạo sinh học gốm sứ
Tóm tắt
Một bột phosphate canxi đã được tổng hợp từ dung dịch lactate canxi 0,25, 0,5 và 1,0 M và photphat hydroammonium trong môi trường nước với tỷ lệ Ca/P = 1, mà không có điều chỉnh pH. Theo dữ liệu nhiễu xạ tia X, bột được tổng hợp gồm brushite (CaHPO4 · 2H2O) và octacalcium phosphate (Ca8(HPO4)2(PO4)4 · 5H2O). Sau khi xử lý nhiệt trong khoảng 500–700°C, các bột này có màu xám do sự phân hủy của sản phẩm phản ứng. Các bột đã xử lý nhiệt trong khoảng 500–700°C chủ yếu gồm γ-Ca2P2O7. Các gốm sứ được chế tạo từ các bột tổng hợp bằng cách nung ở 1100°C gồm β-Ca2P2O7 và β-Ca3(PO4)2.
Từ khóa
#phosphate canxi #lactate canxi #photphat hydroammonium #gốm sinh học #xử lý nhiệtTài liệu tham khảo
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