Calcium hydrogen orthophosphate [ containing not less than 0.2% by weight of fluorine] 正磷酸氢钙[含氟重量不少于0.2%]
The lattice constants of crystalline calcium potassium sodium orthophosphate [ Ca2KNa ( PO4) 2] were investigated with wide angle powder X ray diffraction ( XRD) method. 通过大角度的粉末X射线衍射测定了正磷酸钠钾钙犤(Ca2KNa(PO4)2)犦晶体陶瓷的晶格参数。
Calcium nitrate 4 hydrate and diammonium hydrogen orthophosphate are selected as initial materials; needle like carbonate containing hydroxyapatite crystals are synthesized by homogeneous precipitation method with urea is used as additive. 选用可溶性的硝酸钙和磷酸氢二铵,在尿素用作添加剂的条件下用均相沉淀法合成了含部分碳酸根的针状羟基磷灰石晶体。