Specific Surface Free Energy of As-Grown and Polished Faces of Synthetic Quartz

• 作者: Keiko Takahashi Masayuki Kawasaki Takaomi Suzuki Toshihiko Kagami
• 来源期刊: 结晶过程及技术期刊(英文)
• 学科: 化学
• 关键词: SURFACE Free ENERGY QUARTZ CRYSTALS
• 年，卷（期）: 2014,（4）
• 页码范围: 177-184
• 页数: 8页
• 分类号: O6

摘要

Contact angles of water droplet on as-grown Z, +X, –X, and m faces of synthetic quartz crystals with growth term of 20 and 48 days, and polished Z, +X, –X, Y, and 45&#176 cut faces of synthetic quartz crystal were observed. The average of the contact angles on as-grown Z, +X, and –X faces increased with the growth term, and they were larger than that on polished Z, +X, and –X faces. On the other hand, the average of the contact angles of water on m face decreased with the growth term, and they were smaller than that on polished Y cut face. Growth rate of the faces of synthetic crystals was measured and the order of growth rate was, m < –X < +X < Z. Specific surface free energy (SSFE) was calculated using Neumann’s equation. The SSFE of polished face was in the order of, m < –X < +X < Z, which corresponds to the order of the growth rate. The SSFE was larger for the face with larger growth rate.