DuraBeryllium® X-ray Windows0 pages

DuraBeryllium® X-ray Windows
X-ray
Windows
Datasheet
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
Mounted DuraBeryllium X-ray Windows
Applications
■■ Microanalysis
■■ EDXRF
■■ WDXRF
■■ XRD
Standard Window Sizes
Standard window 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
9.2
8.0
12.0
12.5
12.0
12.5
16.0
25.0
9.2
25.0
16.0
Other window sizes are available but may require
a longer lead time. Refer to Table 2 for more
options.
Benefits
DuraCoat®
DuraCoat® Plus
Thin Beryllium
Uniform thickness
Epoxy adhesive (optional)
Metal diffusion bond (optional)
High purity
Corrosion resistance, hermetic seal
Maximum corrosion resistance
High transmission of low energy x-rays
Constant transmission across entire window
Reduced cost
High temperature exposure
Minimal spectral contamination
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 1 atm on approved mount designs.
Cleanability
MOXTEK
®
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.
WIN-DATA-1003, REV C
Subject to technical change without notice
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