最洁净的泵
超低碎屑颗粒产生Levitronix® 泵系统基于主动磁悬浮。叶轮与泵头机壳之间没有机械耦合,可以实现无磨损运行,因此几乎不会产生碎屑颗粒。
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为了满足对半导体制造污染物日益提高的敏感性,晶圆清洗已成为最关键的操作之一。尽可能地减少工艺设备的颗粒污染对于获得高良率至关重要。与Levitronix® 泵相比,气动泵会因止回阀、波纹管、隔膜和其他组件的摩擦产生磨损。磨损会导致碎屑颗粒脱落,从而导致晶圆缺陷。此外,气动泵的脉动流量会由于颗粒物的释放量增加而降低过滤器的性能。
压力和流量脉动已被证明会增加颗粒从过滤器中的释放,并限制其使用寿命。开放式泵头设计、离心泵原理和无阀门结构产生了完全无脉动流量,改善了过滤器性能并增加其使用寿命。
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