Crystal size transitionCoalescencePore sizeSwine hydroxyapatiteHydroxyapatite was obtained from swine bones (P-HAp) and then, in situ, analyzed using differential scanning calorimetry (DSC) and high-temperature X-ray diffraction (HT-XRD). In situ X-ray patterns were obtained every 20 degrees C from...
SEM电镜照片显示SAPO-34尺寸在0.5-2微米之间，审稿人让用XRD算crystal size， 请问这个crystal size ...
晶体尺寸，不是颗粒尺寸
aIn general, the full width at half maximum of XRD peak is related to the particle size of crystal materials. The larger the width, the smaller the size crystallites have. The mean crystallite size can becalculated from full-width at half-maxima of XRD peak by using Debye–Scherrer formula...
In reality, inputs like these will have to be experimentally calibrated for any given scanner, although the functional form of our equations should remain valid. The resolution of our reconstructed XRD patterns is primarily limited by the energy sensitivity of available X-ray detectors, see Eq. ...
Wilson, “Scherrer after Sixty Years: A Survey and Some New Results in the Determination of Crystallite Size,” J. Appl. Cryst. 11 (1978) pp 102-113. The Laue Equations describe the intensity of a diffracted peak from a single parallelopipeden crystal N1, N2, and N3 are the number of...
(15)ε′=-2aC=-12aAnd the Williamson-Hall to Scherrer parameter, αW-H-S, and the threshold particle size, (DW-H)0 are found by solving the equations for b and d simultaneously and the simplification lead to:(16)αW-H-S=2bd+2b+1Kλand(17)(DW-H)0=Kλd+2bThe main task in...
However, in the water environment, Ca(OH)2 in the hardened cement slurry will interact with CO2 in the air to form CaCO3, as shown in the following equations: (3) (4) (5) In addition, after the hydration reaction of cement, the relative concentration of hydration product reaches a ce...
Structural parameters (La, Lc, and d002) were calculated according to Scherrer equations (1)–(3), respectively: crystalline lateral size: La 1.84λ B100cos φ100 , (1) stacking height: Lc 0.89λ B002cos φ002 , (2) Journal of Spectroscopy 5 interlayer spacing: d002 λ 2 sin θ002 ...
Following the study by Moore et al.23 leads to kinetic equations: lnðtx2 À tx1Þ ¼ Ea RT À ln k0 þ lnðbx2 À bx1Þ xðtÞ ¼ 1 À exp À k0 exp À Ea n t RT ð1Þ ð2Þ where tx1 and tx2 are the time at which the ...