Vacuum Design Constraints and Considerations - Owens Design
Vacuum Design Constraints and Considerations - Owens Design
Vacuum Design Constraints and Considerations - Owens Design
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Common Materials<br />
• Stainless Steal<br />
– Strength<br />
– Corrosion Resistance<br />
– Available in Magnetic <strong>and</strong> Non-Magnetic Forms<br />
– Common Alloys Include<br />
• Xxx Mag<br />
• XXx non Mag<br />
• Aluminum<br />
– Good Stiffness To Weight Ration<br />
– Easily machined<br />
– Non Magnetic<br />
• Common Alloys Include<br />
• Ceramics<br />
– Chemical Resistance<br />
– Temperature Resistance<br />
– Thermal <strong>and</strong> Electrical Insulation<br />
– Alumina<br />
– Quarts<br />
– Beryllium Oxide?<br />
• Plastics<br />
– PolyBenzImidazole (Celazole) High Temp, Brittle, Hard to Machine. Bushings, Bearings, Rollers<br />
– Polyimide<br />
• Vespel High Temp, Expensive<br />
• Duration, Lower Cost than Vespel, similar Properties<br />
– PolyAmide-Imide (Torlon) Low Thermal Expansion, typically used for Insulators, spaces. Can be glass filled.<br />
– PTFE
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