Fibras y Filamentos de Carbón para recubridores de carbón, SPI Supplies^®

Fibras e "hilos" de carbón de Alta Pureza, SPI

¡Contamos con una amplia variedad de diámetros de fibras para prácticamente cubrir cualquier aplicación en recubrimiento!

El recubrimiento de carbón en muestras es esencial para desviar cargas eléctricas de las muestras que se analizan por SEM. El Módulo Recubridor de carbón de SPI así como otros recubridores emplean fibras de carbón como fuente de carbón para evaporación. El Módulo de recubrimiento por carbón de SPI al igual que otros recubridores disponibles en el Mercado tienen barras de carbón en los cabezales, pero el uso de la fibra de carbón es preferida en modo de evaporación. Los productos de fibra de carbón de SPI Supplies® están manufacturados de fibra de grafito que ha sido especialmente purificada para reducir impurezas al rango mínimo en partes por millón. El microscopista trabaja seguro en un espectro que está libre de interferencias provenientes del recubrimiento de carbón.

La línea de productos recientemente se ha duplicado sus opciones. Actualmente, de 2 tipos originalmente disponibles, ahora existen cuatro:

Fibra Gruesa (producto original):
En algunos países en ocasiones es conocida como "trenzado". La fibra gruesa consiste en ocho "hilos" separados de fibra de carbon entramados juntos (in comparación, la fibra delgada contiene tres "hilos" entramados) La fibra está procesada de tal forma que cuando ésta se corta, los extremos se mantienen sin separarse. La densidad de la fibra se aproximadamente 1.6g/metro. Siempre hemos recomendado esta fibra gruesa para uso general en el Módulo Recubridor de Carbón SPI Module™. We also recommend this fiber product for use with carbon coaters manufactured by Quorum Technologies, Agar Scientific, Cressington, Ted Pella, Inc., and Emitech, plus others that at one time carried the names of Polaron, Bio-Rad Laboratories, Fisons Instruments and Technics.

Smaller thick fiber (a new product)
This fiber product is a bit thinner than the above "thick" fiber and has a density of 0.7g/meter and the nominal diameter of 1.3 mm. It was developed for those who are using the above carbon coaters but who desire a thinner carbon coating on their samples, generally being those instances where flat surfaces are being coated. For example, this would not be the fiber to use if you were coating a rough fracture surface.

Thin thread (original product)
This product consists of a twisted design where three of the basic fibers strands have been twisted together to make the fional thread. The density is about 0.25g/meter and the diameter about 1.0 mm. We recommend this diameter fiber for use in carbon coaters manufactured by Denton Vacuum, Inc., Bal-Tec AG, and Leybold Vacuum Products Inc. as well as others.

Smaller thin thread (a new product)
We have for a number of years offered our thin carbon thread but some users found that they needed to have an even thinner coating. The density is 0.4g/meter and a nominal diameter of 0.8 mm. So we have introduced this fiber for those wanting a thicker coating than would otherwise be possible with the thin carbon thread (see below).

We find that there is a range of preferences depending on the specifics of the samples being coated, the details of the operation of specific carbon coaters, and therefore many laboratories tend to keep at least a few packs of all of the different carbon fiber diameters. For most carbon coaters, and many users, it is difficult to control the thickness (relative to a vacuum evaporator) and by selecting more carefully and precisely the diameter/density of the fiber, one can obtain much more highly reproducible coating thicknesses.

But one should pay attention to the recommendation of the manufacturer of their units and at least use that recommended diameter of fiber as a starting point from which one can use either a thicker or thinner fiber.

Note: All four carbon fiber products in the SPI Supplies carbon fiber range are treated with a proprietary process so that the ends, when cut, resist unraveling, something very important for anyone who has ever attempted to string a segment of carbon fiber across the posts of the typical carbon fiber head.

When "shopping" for carbon fiber, do you need a relacement gold sputter coater cathode as well?
For the same shipping charges, you could have delivered with your carbon fiber a replacement gold or other precious metal cathode for your sputter coater.

Thick fiber (and original product)
This is the original high purity thick carbon fiber that is already in use in numerous laboratories worldwide. Recommended for use in carbon coaters manufactured by Quorum Technologies, Agar Scientific, Cressington and Emitech, plus others that at one time carried the names of Polaron, Bio-Rad Laboratories, Fisons Instruments and Technics.

Diameter: ~ 2 mm

Quantity	SPI #	Each	10+, Each
1 m	11431-AB	$ 19.50	$ 17.55
Pkg/10	11431-BA	159.59	143.63

Smaller thick fiber (a new product)
This carbon fiber is recommended for those coating flat surfaces and desiring less thickness of the coating. This is also the recommended firber thickness and structure recommended for use in the Leybold Vacuum Products Inc. Coating System Model ScanCoate 6.

Diameter: ~ 1.3 mm

Quantity	SPI #	Each	10+, Each
1 m	11436-AB	$ 21.96	$ 19.76
Pkg/10	11436-BA	197.64	177.88

Smaller thin thread (a new product)
This carbon fiber product is designed for those carbon coaters that themselves were originally designed to use the thin carbon thread. This is the carbon fiber thickness preferred by some users of Emitech carbon coating devices but others prefer SPI #11436-AB or even thickest product, SPI #11431. Apparently, the Emitech units are sufficient versatile to be able to handle all three thicknesses for variable carbon coating thicknesses, especially the Model K 450.

Diameter: 1.0 mm

Quantity	SPI #	Each	10+, Each
1 m	11435-AB	$ 20.86	$ 18.77
Pkg/10	11435-BA	187.76	168.98

Thin thread (original product)
This is the original high purity carbon fiber thread that has been manufactured and sold by SPI Supplies for year and years. We recommend this diameter carbon thread for carbon coaters manufactured by Denton Vacuum, Inc., Bal-Tec AG, and certain models of Leybold Vacuum Products Inc. as well as others.

Diameter: ~ 0.8 mm

Quantity	SPI #	Each	10+, Each
1 m	11433-AB	$ 13.45	$ 12.11
Pkg/10	11433-BA	109.54	98.59

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Fibras y Filamentos de Carbón para recubridores de carbón, SPI Supplies®

Fibras y Filamentos de Carbón para recubridores de carbón, SPI Supplies^®