The effect of surface charge and KNO3 additive on the crystallization of potassium chloride
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, crystal growth and dissolution rates of potassium chloride crystals in pure solution and in the presence of potassium nitrate were investigated in a stagnant type single crystal cell using an image analyzer system. Closely sized seed crystals were separated with respect to their surface potentials using an electrostatic separator and then growth and dissolution behavior of potassium chloride crystals having different surface charges were systematically measured in pure solution and at 10, 100 and 1000 ppm additive concentrations at around 20 degrees C. In high supersaturation levels, very thin but very long rod-like growth, growing perpendicular to the surface, were observed. This is considered to result from surface nucleation. A dead zone was detected and its width was a function of surface potential of seed crystals. It was determined that, potassium nitrate additive, which has a common ion with KCl leads to increase the surface potential but not to affect the growth behavior, significantly. (C) 2011 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Additive, Dendrites, Surface structure, Growth from solutions, Single crystal growth, Potassium compounds
Kaynak
JOURNAL OF CRYSTAL GROWTH
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
327
Sayı
1
