DuraBeryllium® X-ray Windows
Moxtek® DuraBeryllium® windows are the highest performing beryllium x-ray windows available. DuraBeryllium windows have high x-ray transmission, are corrosion resistant, and vacuum tight. DuraBeryllium windows can be attached with a high temperature metal diffusion bond or using a vacuum compatible epoxy. DuraBeryllium windows are used in a variety of applications including microanalysis, EDXRF, WDXRF, and XRD.
Features Benefits
DuraCoat®
Corrosion resistance, hermetic seal
DuraCoat® Plus
Maximum corrosion resistance
Thin Beryllium
High transmission of low energy x-rays
Uniform thickness
Constant transmission across entire window
Epoxy adhesive (optional)
Reduced cost
Metal diffusion bond (optional)
High temperature exposure
High purity
Minimal spectral contamination
Applications
• Microanalysis • EDXRF • WDXRF • XRD
Window Sizes
Standard window sizes available are shown in the following table:
Thickness (µm)
Diameter (mm)
8.0
9.2
12.5
12.0
25.0
9.2
Other common sizes available are shown in the following table:
Thickness (µm)
Diameter (mm)
8.0
4.9
8.0
5.7
8.0
7.9
8.0
12.0
12.5
16.0
25.0
16.0
Available but may require a longer lead time.
DuraCoat Coatings
DuraCoat and DuraCoat Plus are proprietary films that are added to beryllium to protect against potential vacuum leaks and exposure to various corrosive materials. DuraCoat is applied to both sides of a beryllium foil while DuraCoat Plus is only applied to one side. DuraCoat is available in both epoxy and metal diffusion bonded parts, while DuraCoat Plus is only available in metal diffusion bonded parts.
Window Composition
DuraBeryllium windows have a proprietary inorganic DuraCoat® film which provides a hermetic seal and chemical resistance. DuraCoat refractory low-Z material is resistant to atmospheric moisture and chemicals. DuraBeryllium Plus windows have an additional DuraCoat Plus polymer film that provides maximum chemical and humidity protection with minimal impact to x-ray transmission. Uncoated beryllium windows are also available from Moxtek.
Mechanical Strength
DuraBeryllium has the same mechanical strength as uncoated beryllium.
Window Bonding Temperature Performance Differences
Metal diffusion bonded windows can withstand temperatures up to 400°C in vacuum or 350°C in air. Epoxy bonded windows can be exposed to temperatures up to 110°C at a differential pressure of 1atm on approved mount designs.
Cleaning
DuraBeryllium windows can be cleaned with high purity solvents (methanol, isopropanol, or ethanol are recommended). See Guidelines for Cleaning AP3 and DuraBeryllium X-ray Windows (WIN-TECH-1003). Please contact Moxtek professionals for further cleaning instruction.