PRODUCTION OF LUMINESCENT FINE PARTICLES USING A LOW-PRESSURE SPRAY PYROLYSIS

在过去几年中，亚微发光/磷酸细颗粒（多组分氧化物）生产过程的发展，并在尺寸和化学中得到控制，这将成为重要的因素。粒子被用于各种应用程序，用于实例，在等离子体显示面板（PDP）中。在一般的、明亮的粒子中，使用必要的长时间合成过程、高温度、铣削等固态方法来准备，这些后处理允许不纯净的混合物，而这将失去准备的粒子的明亮功能。我们研究的对象是对粒子的制备进行调查和应用喷雾幽门螺杆菌过程，并采用低压系统。使用原子器有一个潜在的产生滴液的大小，在相对较高的生产率以下。本研究已准备了一种使用喷雾幽门螺杆菌方法的发光材料，即多组分氧化物粒子。我曾在实验中被调查过。 ... More 过程参数如滴液产生条件、滴液的大小、初始浓度和喷雾解决方案的其他性质、加热速率、形态学、化学和生产场的最终粒子的预测器。氧化物的多成分包括掺杂剂作为喷雾解决方案的准备剂。该解决方案被转换成离散的水滴，并引入到一个由温度梯度控制的管状电气家具中，然后最终颗粒被收集到的出口中。The application of spray？rolysis process has been investigated on the preparation of a various luminescent particles such as Y_Eu，CeイD21-xイエD2TbイD2xイエD2MgAlイイD211イエD2OイイD219イエD2。Y型D22型D2型D25型D2 ： Tb，Gd型D22型D2 O型D23型D2 ： Eu。作为有意义的，通过使用传统的方法， i e。固体状态合成，这是必要的，为了操作长时间和一个非常高温的过程，以准备材料具有高亮度强度和晶体管，这是一个一步过程，是的。喷雾器可以在几秒钟内准备非饱和度和高纯度发光粒子，在相对较低的温度条件下。随着规模的扩大，这在未来的近一个领域是可以预期的，以应用于工业中拟议的过程。Less（低）

In recent years, the development of the production process of submicron luminescent/phosphors fine particles (multicomponent oxide) with controlled in size and chemistry is become important. The particles is used in a various applications, for instance, at the plasma display panel (PDP). In general, luminescent particles are prepared using a solid-state method which necessary long-time synthesis process, a quite high temperature, milling, etc. These post-processing allow mixture of impurities, and this will lose the luminescent function of the particles prepared. The objective of our research is to investigate and apply a spray pyrolysis process with low-pressure system for preparation of particles. The atomizer used has a potential to generate droplet having size below I micrometer at a relatively high production rate. This research have been prepared the luminescent materials as multicomponent oxides particles using spray pyrolysis method. We have been investigated experimentally the … More influence of process parameters such as the droplet generation condition, size of the droplets, initial concentration and the other properties of the spraying solution, and heating rate, on morphology, chemistry and production yield of the final particles.The precursor of the multicomponent of the oxides included the dopants are prepared as spraying solutions. The solutions were converted into discrete droplets and introduced into a tubular electrical furnace with temperature gradient-controlled, then the final particles were collected at the outlet of the furnace. The application of spray pyrolysis process has been investigated on the preparation of a various luminescent particles such as YィイD22ィエD2SiOィイD25ィエD2 : Ce、YィイD23ィエD2AlィイD25ィエD2OィイD212ィエD2 : Tb、BaOィイD26ィエD2AlィイD22ィエD2OィイD23ィエD2 : Mn、YィイD22ィエD2OィイD23ィエD2 : Eu、CeィイD21-xィエD2TbィイD2xィエD2MgAlィイD211ィエD2OィイD219ィエD2. YィイD22ィエD2SiOィイD25ィエD2 : Tb、GdィイD22ィエD2OィイD23ィエD2 : Eu. As mentioned above, by using the traditional method, i e., solid-state synthesis, it is necessary, to operate long-time and a very high-temperature process to prepare materials having high luminescent intensity and crystallinity However a one-step process, i.e., spray pyrolysis could prepare non-agglomerate and high purity luminescent particles at a few seconds and at a relatively low temperature condition. By scaling-up, it is expectable in the near future to apply the proposed process in the industries. Less