Laser melting techniques have been used in the preparation of unconventional glass compositions with high melting temperatures. Thus, we wanted to test the feasibility of using a CO₂ laser in the preparation of nitrogen‐rich oxynitride glasses and nitride silicate glasses. Melting from oxides and metallic raw materials, we wanted to study first glass formation and possible evaporation losses of the glass components. Two glass series were prepared and studied for their structure and thermal properties, one with Ca²⁺‐ and a higher melting La³⁺‐doped soda‐lime‐silicate (SLS) series. In less than 3 minutes of laser melting, spheres of up to 6 mm diameter were successfully fabricated. The obtained glass samples were homogeneous and transparent in the visible region. X‐ray diffraction and Raman spectroscopic analysis confirmed the amorphous nature of the synthesized samples. Sodium losses increase as calcium is added to the soda‐lime‐silicate glass. As expected, increasing Ca²⁺ or La³⁺ addition lead to increased depolymerization of the silicate network. Moreover, the increases in T_g with the addition of Ca²⁺ or La³⁺ ions indicating strengthening of the soda‐lime‐silicate glass by increasing strength of the M‐O bonds of divalent and trivalent ions over monovalent sodium ions, weak Na‐O bonds also resulting in significant evaporation loss during the short laser melting times. The thermal stability decreases upon addition of Ca²⁺ or La³⁺ ions to the soda‐lime‐silicate glasses.

中文翻译：

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钙和镧掺杂钠钙玻璃的合成，结构表征和热学性质

激光熔融技术已用于制备具有高熔融温度的非常规玻璃组合物。因此，我们想测试在制备富氮氮氧化物玻璃和氮化硅酸盐玻璃中使用CO ₂激光器的可行性。我们想从氧化物和金属原料中融化，首先研究玻璃的形成和玻璃组件可能的蒸发损失。制备了两种玻璃，并研究了它们的结构和热性能，其中一种玻璃具有Ca 2 ⁺ -和高熔点的La ³⁺掺杂钠钙硅酸盐（SLS）系列。在不到3分钟的激光熔化过程中，成功制造了直径达6毫米的球体。所获得的玻璃样品在可见光区域内均匀且透明。X射线衍射和拉曼光谱分析证实了合成样品的无定形性质。当将钙添加到钠钙硅酸盐玻璃中时，钠损失增加。如所预期的，增加的Ca ²⁺或La ^3+的添加导致硅酸盐网络的解聚增加。此外，添加Ca ²⁺或La ³⁺会使T _g增加表示通过增加二价和三价离子与单价钠离子的M-O键的强度来增强钠钙硅酸盐玻璃的离子，较弱的Na-O键还会在短时间的激光熔化时间内导致明显的蒸发损失。在钠钙硅酸盐玻璃中添加Ca ²⁺或La ³⁺离子后，热稳定性会降低。