Origin and relation of three kinds of scatter centers in KDP and DKDP crystals

Sun, Xingming; Wang, Z. P.; Wang, S. L.; Gu, Qiang; Xu, Xin­guang; Li, Y. P.; Fang, Changshui

doi:10.1002/crat.200310255

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…With additives, KDP crystals can be grown rapidly in the traditional crystallizers of simple design for conventional growth. In this present work, KDP crystals were grown from the aqueous solutions added with 5M% KCl and 0.01M% EDTA, J. Podder [9] reported that the presence of KCl in the growth medium is also found to suppress the metal ion impurities to a large extent and increases the growth rate. The increase in the quality of the KDP crystal in presence of KCl is due to the complexation of trace metal ion impurities in solution by Cl ion.…”

Section: Introductionmentioning

confidence: 98%

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Li¹,

et al. 2005

Cryst. Res. Technol.

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Potassium Chloride (KCl) and Ethylene diamine tetraacetie acid (EDTA) as new additives were added into the KDP solutions in a small amount (5M% and 0.01M% respectively). The solubility curve and metastable zone width of KDP solution with 5M%KCl was determined and we explained the mechanism of rapid growth of KDP crystal with KCl additve. The clear transparent crystal of KDP with a dimension of 54×54×42mm have been grown rapidly by cooling solution method in 2 days. The crystal grown from additives added solution was subjected to optical transmission and laser damage threshold studies as compared with the crystal grown by traditional growing method.

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Section: Introductionmentioning

confidence: 98%

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Li¹,

et al. 2005

Cryst. Res. Technol.

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“…This crystal shows application prospects in major technologies such as in controlled thermonuclear reactions of high-power laser systems, nuclear explosion simulations, etc. Therefore, research on ultra-large, high-quality KDP optical crystals has attracted much attention from researchers worldwide [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Precision Cutting Mechanism of KDP Crystal in Microplastic Region via Heating Assistance

Yang

Huang

et al. 2023

Applied Sciences

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The application range of potassium dihydrogen phosphate (KDP) crystals can be expanded by enhancing their surface quality properties. Therefore, a method for controlling the surface-temperature field of various materials was developed to expand the plastic zone to overcome the difficulty in processing KDP crystals. The ductile/brittle transition depth of the KDP crystals was determined using a 38 nm nanoindentation experiment. The nanoscratch experiment revealed the rules of how the transformation depth of the KDP crystals changes with temperatures, and the effect of temperature on the microstructure of the KDP crystals was studied. Finally, KDP crystal surfaces were processed using a UPDFC machine at elevated temperatures. According to our experiments, the surface roughness of the KDP crystal reached 5.275 nm as temperature increased, thus enhancing its surface quality. This method could be applied to other brittle materials.

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“…2,3 On the other hand, thermal annealing is an effective method to improve the crystal quality and has been widely used in KDP crystals. [4][5][6][7][8][9][10][11][12] The higher the annealing temperature, the better the improvement. The annealing temperature of KDP crystals is about 423 K. However for DKDP crystals, the annealing temperature is usually below 363 K. The reason for the low annealing temperature is also attributed to high temperature behaviors such as thermal decomposition or HTPT.…”

Section: Introductionmentioning

confidence: 99%

New annealing method to improve KD₂PO₄ crystal quality: learning from high temperature phase transition

Zhang

Liu

et al. 2015

CrystEngComm

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The existence of a high temperature phase transition in KD 2 PO 4 was confirmed by thermal analysis, dielectric analysis and Raman spectroscopy. The results showed that KD 2 PO 4 presented only one high temperature phase transition at about T tr = 430 K, which is much lower than the thermal decomposition temperature. The absence of Raman shift attributable to the dehydration product indicated that the HTPT had nothing to do with thermal decomposition. The structural change during the HTPT was discussed. The strong similarity between the HT-phase and tetragonal phase decreases the temperature of the HTPT in the KD 2 PO 4 crystal. The hydrogen-deuterium exchange can be suppressed under a protective ambient environment, which helps improve the annealing temperature. A new annealing method was developed by using silicone oil as a protective ambient environment under higher temperature up to 403 K, thus improving the quality of KD 2 PO 4 crystals.

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Origin and relation of three kinds of scatter centers in KDP and DKDP crystals

Cited by 7 publications

References 9 publications

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Ultra-Precision Cutting Mechanism of KDP Crystal in Microplastic Region via Heating Assistance

New annealing method to improve KD₂PO₄ crystal quality: learning from high temperature phase transition

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Origin and relation of three kinds of scatter centers in KDP and DKDP crystals

Cited by 7 publications

References 9 publications

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Rapid growth of KDP crystal from aqueous solutions with additives and its optical studies

Ultra-Precision Cutting Mechanism of KDP Crystal in Microplastic Region via Heating Assistance

New annealing method to improve KD2PO4 crystal quality: learning from high temperature phase transition

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New annealing method to improve KD₂PO₄ crystal quality: learning from high temperature phase transition