Alumina coated tungsten evaporation boats

The alumina coated tungsten boat is a combination of the refractory metal tungsten and an alumina barrier (Al2O3) coating over the tab area. The exposed metal area comprising the bottom of the boat allows the sample to be in good thermal contact with the source. The barrier will tend to help concentrate the heat towards the centre. The alumina barrier will inhibit an evaporant (if used as a sample instead of an aperture) from creeping toward the heat sink or from wetting the entire boat.Available:

The alumina coated tungsten boat is a combination of the refractory metal tungsten and an alumina barrier (Al₂O₃) coating over the tab area. The exposed metal area comprising the bottom of the boat allows the sample to be in good thermal contact with the source. The barrier will tend to help concentrate the heat towards the centre. The alumina barrier will inhibit an evaporant (if used as a sample instead of an aperture) from creeping toward the heat sink or from wetting the entire boat.

Available:

Code	Boat Dimensions (L x W)	Trough Dimensions (L x W x D)	Tungsten Thickness	Settings
V028	82.5 x 12.7mm	6.35 x 19.05 x 2.38mm	0.25mm	0.95V/136A/129W for 1200°C
V029	101.6 x 25.4mm	44.5 x 15.9 x 2.4mm	0.25mm	1.43V/264A/378W for 1200°C
V030*	101.6 x 12.7mm	12.7mm diameter x 3.2mm	0.25mm	1.29V/190A/245W for 1200°C

*Replaces alumina crucibles for some specific applications.

Specifications:

Melting point of tungsten boats with coated Al₂O₃ tabs: 3422°C

Please choose carefully. Returns of this item are subject to approval.

Updated: 02-12-2025

Code	Size	Pack Size	Availability	Price	Updated: 02-12-2025
V028	82.5 x 12.7mm	Pack/5	0 in stock (?)	$166.00 AUD	Image Close
V029	101.6 x 25.4mm	Pack/5	0 in stock (?)	$264.00 AUD	Image Close
V030	101 x 12mm	Pack/5	0 in stock (?)	$150.00 AUD	Image Close

* Ordering Schedule

This item is available for back-order where 0 stock is listed.
We order from this manufacturer weekly, with an estimated lead time of 3 weeks.

This is the estimated lead time, based on the average time taken previously to fill orders from this particular supplier.
Lead times are from when we receive your order until when we fill your order. For delivery times, please see shipping information below.