Surmet Optical Ceramics Brochure

ALON® and Spinel Optical Ceramics
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
About Us
Surmet Corp. was founded in 1982 with a goal to become a commercial
producer and supplier of differentiating products based on advanced
metallic and ceramic materials technologies. Surmet became a leader in
developing and manufacturing critical components such as the
electrostatic clamp, for semiconductor processing equipment. These
Surmet products have been inserted in IC Fabrication production lines
used by all major companies worldwide.
For defense markets, Surmet has developed weight efficient transparent
armor technology based on our proprietary ALON® optical ceramic
material. We have already proven that ALON® transparent armor offers a
lightweight solution to defeat a wide range of threats including
30calAPM2 and 50calAPM2. ALON® transparent armor defeats these
threats at about one-half the weight and thickness of current glass based
transparent armor. Surmet can manufacture and supply ALON®
transparent armor solutions for these ballistic threats. It is also
noteworthy that Surmet is producing the ALON optical ceramic hard face
material in thicknesses up to 1 in., this may enable scaling up our armor
capability to efficiently defeat larger 12.7 mm, 14.5 mm and IED threats.
Surmet is also developing infrared transmitting optical components for
applications such as missile domes, reconnaissance windows, and laser
windows. We are supplying precision optics ceramic components to
major Prime Contractors for insertion in production defense systems.
For interest in receiving a quote for specific armor products, please send
your inquiry to [email protected].
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
ALON®
TECHNICAL DATA
ALON® Optical Ceramic
ALON®Optical Ceramic is an extremely durable
crystalline material with excellent optical
transparency in the near ultraviolet, visible and
infrared up to approximately 5 μm wavelength.
ALON® Optical Ceramic is fabricated using a
proprietary powder processing technique. The
material combines mechanical and optical properties
similar to sapphire with the advantages of an
isotropic cubic crystal structure. It has an
approximate composition of Al23O27N5.
ALON® Optical Ceramic can be made to order as
windows, domes, plates, rods and tubes in a wide
range of sizes and thicknesses by a variety of
conventional ceramic forming methods such as
injection molding, isostatic pressing and slipcasting.
TYPICAL PROPERTIES OF ALON® OPTICAL CERAMIC
Composition……………
Grain Size (typical)…....
Structure………………..
Lattice Constant………..
Density…………………
Form……………………
Melting Point………….
Young’s Modulus……..
Shear Modulus……….
Poisson’s Ratio……….
Hardness………………
100
Al23-1/3XO27+XN5-X
(0.429<X<2)
150-250 microns
Cubic, Spinel
7.956A – 7.936A
3.696 – 3.691 g/cc
Polycrystalline
2150oC
46.9x106 psi
18.9x106 psi
0.24
1850 Kg/mm2
2 mm thick sample
80
60
40
(Knoop Indentation, 200g load)
Fracture Toughness……..
Flexure Strength…………
Specific Heat…………….
Thermal Conductivity
Transmission Limits
Thermal Expansion Coeff.
30-200oC
5.65x10-6
30-400oC
6.40x10-6
30-600oC
6.93x10-6
o
30-900 C
7.50x10-6
2.0 MPa-m1/2
55,000 psi
0.22 cal/g-oC
(cal/cm-s-oC)
75oC………. 0.023
270oC……… 0.017
540oC………. 0.015
830oC………. 0.017
0.22 to 6 microns
Dielectric Properties
Freq.
k
(GHz)
35-45
9.190
55-60
90181
90-110
9.175
20
0
0
1
2
3
4
5
Wavelength (microns)
tan δ
(x10-5)
31
67
96
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
Index of Refraction
λ(μm)
n
0.48
1.803
0.50
1.801
1.790
0.64
0.68
1.788
0.70
1.787
1.00
1.779
2.00
1.761
3.00
1.737
4.00
1.702
5.00
1.653
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Infrared
Absorption Coefficient
λ(μm)
α (cm-1)
3.8
0.080
4.000
0.159
4.230
0.288
4.380
0.409
0.598
4.545
4.717
0.849
4.902
1.230
5.000
1.598
5.102
2.000
5.319
5.230
5.550
8.060
5.814
11.030
6
Spinel
TECHNICAL DATA
Spinel Optical Ceramic
Spinel Transmission
% Transmission
100
80
60
40
20
0
0
Composition……………
Form……………………
Lattice Constant………..
Density*1…………………
Melting Point*1………….
MgAl2O4
Polycrystalline
8.082 Å
3.58 g/cc
2135oC
Grain Size (typical)….....
Crystal Structure……….
Young’s Modulus*1……..
Poisson’s Ratio*1………..
Bimodal, 25 um average
and 150 um average
Cubic, Spinel
276 GPa
0.26
Thermal Expansion*1……
Hardness*1………………
6.97 x 10-6 (30-200 C)
1650 kg/mm2
Fracture Toughness*1……..
Flexure Strength*1…………
Specific Heat*1…………….
Thermal Conductivity*1…...
Transmission Limits*1…….
Typical Transmission…...
(@ 4 mm thickness)
1.5 MPa-m1/2
170 MPa
0.8191 J/g - °C
25 W/m-C @ 25°C
0.25 to 6.5 microns
76%
@ 0.65 um
83%
@ 1.064 um
82%
@ 4.5 um
Ref. Index Homogeneity..
(RMS)
<5 x 10-6 over 3.0” diameter
<9 x 10-6 over 4.7” diameter
1
2
3
4
5
6
W a ve le ngth (um )
(Knoop Indentation, 200g load)
*1- Reference 1: Handbook of Optics Volume II ,McGraw Hill, Inc.
(1995)
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
Index of Refraction
λ (um)
η
λ (um)
η
0.404
1.7359
1.00
1.703
0.50
1.7230
2.40
1.6807
0.60
1.7155
3.00
1.6677
0.70
1.7108
4.00
1.6386
0.80
1.7075
5.00
1.598
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7
Comparison of Transmission
(2 mm thick samples)
Spinel
Sapphire
ALON
Spinel transmits out further than Sapphire,
which transmits out further into the
MWIR than ALON® Optical Ceramic
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
Optical Ceramics Processing Steps
ALON® and Spinel Optical Ceramics are made by
conventional ceramic processing techniques
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
ALON® and Spinel Optical Ceramics
IR Windows and Domes
ALON® Hyper-Hemisphere
for Counter-Manpads
Reconnaissance Window
Spinel Lens
Spinel Tri-Mode Seeker Dome
ALON® and Spinel can be made in large sizes and more
complicated geometries than Sapphire
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
Armor Grade
ALON® Optical Ceramic (AG-ALON)
♦ Highest level of ballistic performance available
♦ Specially formulated for armor applications
♦ Can be cost effectively scaled to high volumes
HP Samples
AG Samples
HP_1
HP_2
HP_3
AG_1
AG_2
AG_3
AG-ALON blocks UV, which
can break down organic layers
in ballistic laminates
UV
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
Foreign Object Damage Resistance
Granite rock fired at ALON® window
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
ALON® Transparent Armor
Defeats 50 Cal AP Threats
Conventional
Glass Laminate
ALON®
Laminates
50 cal API round stopped
by thin ALON® laminate
50 cal API round penetrates
thick glass laminate
ALON® armor provides state of the art protection at half the weight
and thickness of conventional glass laminates
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]
Tiled ALON® Armor Windows
Tiled ALON® windows provide excellent ballistic performance
Engineered seams can be employed to minimize obscuration
30 cal AP
50 cal AP
Excellent multi-hit performance has been demonstrated
against 30 cal and 50 cal AP rounds
For quotation contact:
Surmet Corporation
31 B Street, Burlington MA 01803
781-272-3969 phone
781-272-9185 fax
[email protected]