XRD
EDS
Atomic %
Weight %
Element
50.73
34.84
Nitrogen
49.27
65.16
Aluminum
RFS Series aluminum nitride powders (AlN) are sintered, high-purity particles with a spherical shape, available in D50 sizes from 30 μm to 160 μm, with a silicone-compatible surface coating applied.
Spherical particles achieve the highest thermal conductivity among AlN powder geometries by enabling superior filler loading and efficient packing in polymer matrices. The coating improves particle bonding in silicone polymer matrices and raises hydrolysis resistance compared to uncoated grades. Combined with large particle sizes, RFS Series is the preferred choice for demanding thermal interface material formulations where maximum thermal conductivity is the priority.
Key applications
RFS Series can be compounded with silicone polymers to develop highly thermally conductive products, including thermal grease, gels, films, tapes, pads, and coatings.
Features
Spherical-shaped particles for maximum thermal conductivity
Narrow particle size distribution
Available in multiple particle sizes (30–160 μm)
Silicone-functional surface coating
Improved hydrolysis resistance (24–72 hours)
RFS Series
Sintered
Particle Type
Spherical
Particle Shape
Yes
Surface Coating
Yes, basic
Water Resistance
24 ~ 72 hours
Water Resistance Rating
Repose Angle
Bulk Density
Binder Content
Aluminum Nitride
Chemical Name
AlN
Formula
Powder
Form
24304-00-5
CAS Number
Gray
Color
≥97%
Purity
>2200°c
Melting Point
3.26 g/cm3
Density
Impurities
Ca
<100 ppm
Pb
<10 ppm
Fe
<150 ppm
Si
<300 ppm
C
<100 ppm
O
<2.5 wt%
Part Number
D50
SEM Photos
Particle Size Distribution
AlN300RFS
30 μm
AlN550RFS
55 μm
AlN800RFS
80 μm
AlN13tRFS
130 μm
AlN16tRFS
160 μm
Available Sizes