布鲁克斯仪器博客

你有没有看昂贵的大玻璃覆盖的建筑? 通常涂上一些特殊材料，玻璃，以反映在两个方向上的热量. 一些玻璃制造商甚至推出 自清洁玻璃. 如果你看硬, 那些大型的玻璃面板对他们的条纹. 建设者和建筑师恨; 所以我.

造成光，以反映非均匀的角度对涂层材料的厚度变化的条纹通常是由. 玻璃涂料公司，笔者近日走访涂层样件和挣扎，同样的问题. 这种玻璃公司被蒸发镀膜玻璃的超级秘密液体易制毒化学. 在这个过程中，蒸汽穿过一个非常炎热的插槽 (一样宽的玻璃) 过热的移动玻璃表面发生反应，从而导致玻璃债券.

The natural thought is that the glass is speeding up or slowing down when passing under the slot causing variations in the coating thickness. A lot of money was spent trying to correct this to no avail. The actual problem turned out to be incomplete vaporization of the liquid. When a vapor containing large droplets of liquid hits a hot surface it rapidly expands causing a sudden increase in pressure. These pressure spikes basically blow the vapor away causing thin areas in the coating as wide as the slot. These pressure spikes were happening at surprisingly regular intervals causing beautifully striped glass, (if you like that sort or thing).

所以, we did the math on flow rates, vapor pressure, temperature and partial pressure and built a new Brooks direct liquid injection vaporizer that wouldn’t spit liquid. We installed the new vaporizer and coated some glass. Yikes no more stripes! High fives all around! I love seeing happy customers.