SO42-是KDP原料中一种常见的杂质离子,通过传统降温法和“点籽晶”快速生长法研究了掺杂K2SO4的KDP晶体的生长。实验表明,硫酸根低浓度掺杂时可提高溶液的稳定性,促进晶体的生长,造成柱面扩展;高浓度时溶液稳定性遭到破坏,出现杂晶,晶体生长速度变慢,晶体出现开裂,柱面发生“楔化”。 SO42- is a common impurity ion in KDP raw materials. The growth of K2SO4 doped KDP crystals was studied by the traditional cooling method and the “seed-point” rapid growth method. Experiments show that sulfate with low concentration can improve the stability of the solution and promote the growth of the crystal, resulting in cylindrical expansion; high concentration solution stability was destroyed, the emergence of hybrid crystals, crystal growth slowed down, the crystal cracking , Cylinder “wedge”.