FABMATE® E-Beam Crucibles

Overview of FABMATE® High-Purity Carbon Crucibles

FABMATE® crucibles, made from 99.9995% elemental carbon, are the go-to solution for high-performance e-beam evaporation applications. Their exceptional durability, acid resistance, and thermal stability make them a superior alternative to quartz and other traditional materials.

Key Features of FABMATE® Crucibles

Outstanding Acid Resistance:
- Hydrofluoric Acid: No erosion after 15 one-hour soak cycles in a 10% hydrofluoric acid solution.
- Nitric and Hydrofluoric Acid Blend: No erosion after 20 one-hour soak cycles in a 70% acid mixture.
Enhanced Material Strength:
FABMATE crucibles undergo purification, precision machining, and a proprietary carbon modification treatment from Poco Graphite, Inc., creating:
- Amorphous carbon layers in pore surfaces.
- An abrasion-resistant and nearly particle-free surface.
Thermal Stability:
- Remains stable in inert atmospheres up to 2500°C, ensuring consistent performance under extreme conditions.
Versatile Material Compatibility:
- Optimal Performance: Compatible with Ag, As, Au, Ga, GeO₂, Ni-Cr alloys, Pb, Se, Sn, Te, and TiO.
- Prolonged Crucible Life: Especially effective for Al evaporation.
- Single-Run Applications: Suitable for Fe, Ni, and Si in single-use scenarios.
- Broad Compatibility: FABMATE can handle all materials supported by standard graphite crucibles.
Model Availability:
- FABMATE crucibles are available in the same models and dimensions as standard graphite crucibles for seamless integration into existing systems.

Note: FABMATE is ideal for replacing troublesome materials like quartz in challenging applications.

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FABMATE® E-Beam Crucibles

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FABMATE® E-Beam Crucibles

Item No.	Angle	Drawings	Capacities (mL)	Diameter (mm/inch)	Height (mm/inch)	Thickness (mm/inch)	Inquiry
EVCFABEB-1	angle=30		1	19.1 (0.75")	4.1 (0.16")	1.0 (0.04")
EVCFABEB-1.5	angle=15		1	17.7 (0.70")	10.2 (0.40")	2.4 (0.09")
EVCFABEB-2	angle=15		2	14.2 (0.56")	9.8 (0.38")	2.4 (0.09")
EVCFABEB-2A	angle=15		2	17.9 (0.71")	11.8 (0.47")	2.4 (0.09")
EVCFABEB-3	angle=15		3	20.4 (0.81")	13.8 (0.55")	2.4 (0.09")
EVCFABEB-4	angle=15		4	22.0 (0.87")	14.3 (0.56")	2.4 (0.09")
EVCFABEB-4A	angle=15		4	22.5 (0.89")	15.1 (0.60")	2.4 (0.09")
EVCFABEB-4B	angle=15		4	21.5 (0.85")	17.5 (0.69")	2.4 (0.09")
EVCFABEB-7	angle=15		7	29.6 (1.17")	14.3 (0.56")	2.4 (0.09")
EVCFABEB-7A	angle=15		7	28.6 (1.13")	13.2 (0.52")	2.4 (0.09")
EVCFABEB-10	angle=15		10	35.2 (1.38")	15.1 (0.59")	2.4 (0.09")
EVCFABEB-12	angle=15		12	32.5 (1.28")	23.9 (0.94")	2.4 (0.09")
EVCFABEB-12A	angle=15		12	34.3 (1.35")	17.3 (0.68")	3.2 (0.13")
EVCFABEB-12B	angle=15		12	33.9 (1.33")	19.5 (0.77")	2.4 (0.09")
EVCFABEB-12C	angle=15		12	33.9 (1.33")	19.5 (0.77")	6.4 (0.25")
EVCFABEB-15	angle=15		15	37.6 (1.48")	17.0 (0.67")	3.2 (0.13")
EVCFABEB-15A	angle=15		15	37.6 (1.48")	17.0 (0.67")	6.4 (0.25")
EVCFABEB-16	angle=15		16	41.7 (1.64")	24.6 (0.97")	3.2 (0.13")
EVCFABEB-20	angle=15		20	42.5 (1.67")	19.5 (0.77")	2.4 (0.09")
EVCFABEB-25	angle=15		25	47.0 (1.85")	17.3 (0.68")	2.4 (0.09")
EVCFABEB-25A	angle=15		25	41.5 (1.63")	23.9 (0.94")	2.4 (0.09")
EVCFABEB-30	angle=15		30	45.1 (1.78")	23.9 (0.94")	2.4 (0.09")
EVCFABEB-30A	angle=15		30	48.8 (1.92")	20.6 (0.81")	2.4 (0.09")
EVCFABEB-30B	angle=15		30	45.1 (1.78")	23.9 (0.94")	6.4 (0.25")
EVCFABEB-35	angle=15		35	52.9 (2.08")	19.5 (0.77")	2.4 (0.09")
EVCFABEB-40	angle=15		40	51.6 (2.03")	25.9 (1.02")	2.4 (0.09")
EVCFABEB-40A	angle=15		40	51.6 (2.03")	25.9 (1.02")	6.4 (0.25")
EVCFABEB-40B	angle=15		40	50.8 (2")	27.0 (1.06")	2.4 (0.09")
EVCFABEB-40C	angle=15		40	50.8 (2")	27.0 (1.06")	6.4 (0.25")
EVCFABEB-62	angle=15		62	56.2 (2.2")	35.6 (1.4")	2.4 (0.09")
EVCFABEB-100	angle=15		100	68.6 (2.7")	37.8 (1.49")	2.4 (0.09")
EVCFABEB-156	angle=15		156	82.6 (3.25")	38.9 (1.53")	6.4 (0.25")
EVCFABEB-A	angle=15		N/A	23.8 (0.93")	15.1 (0.59")	2.4 (0.09")
EVCFABEB-B	angle=15		N/A	75.2 (2.96")	39.7 (1.56")	2.4 (0.09")
EVCFABEB-C	angle=15		N/A	60.7 (2.39")	25.4 (1")	6.4 (0.25")
EVCFABEB-D	angle=15		N/A	48.0 (1.89")	17.8 (0.7")	3.2 (0.13")
EVCFABEB-E	angle=0		N/A	25.4 (1.00")	19.1 (0.75")	3.2 (0.13")
EVCFABEB-G	angle=14		N/A	19.8 (0.78")	11.1 (0.44")	1.6 (0.06")

Common Causes of Crucible Breakage

Proper handling and setup are essential to extend the lifespan of FABMATE crucibles. Below are common issues and solutions:

1. Incorrect Ramp/Soak Settings

E-beam evaporation recipes rely on carefully calibrated ramp/soak power levels:

Power Control Transition: During deposition, power control transitions from ramp/soak settings to a PID loop, which manages the e-gun power and quartz crystal controller.
- Erratic Power Fluctuations: If ramp2/soak2 power levels are not aligned with the required deposition power (e.g., 1 Ångström/sec), the PID loop compensates with significant power oscillations (+90% to 0%).
- Crucible Stress: These fluctuations cause rapid liquefaction and condensation cycles, cracking the crucible.
- Solution: Set ramp2/soak2 levels close to the deposition power level to minimize PID adjustments and prevent rapid phase changes.

2. Abrupt Power Shutdown

Improper shutdown after deposition can also damage crucibles:

Rapid Solidification: Turning off power abruptly or using a short ramp-down period causes the melt to solidify too quickly, stressing the crucible liner.
Preventive Measure: Gradually ramp down power to allow for even cooling, reducing mechanical stress.