Browse Prior Art Database

Magnetic Sampler

IP.com Disclosure Number: IPCOM000041387D
Original Publication Date: 1984-Jan-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Moore, JA: AUTHOR [+2]

Abstract

The method for collecting magnetic contaminants described in [*] uses a collector formed by encapsulating a SMCO5 magnet in an epoxy and bonding the encapsulated magnet to the end of a non-magnetic rod. In the improved magnetic sampler, the SMCO5 magnet 1 (Fig. 1) is encapsulated in a premolded plastic holder 2 using epoxy 7. Holder 2 has three equally spaced standoffs 3 (Figs. 1 and 2) to keep the magnet 1 at a fixed distance from the surface 6 being sampled. An index mark 4 aids in determining the starting point during subsequent analysis of the collected particles. Also, a gold coating is sputtered onto the entire exterior surface 5 because the analytical equipment requires a conductive surface.

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Magnetic Sampler

The method for collecting magnetic contaminants described in [*] uses a collector formed by encapsulating a SMCO5 magnet in an epoxy and bonding the encapsulated magnet to the end of a non-magnetic rod. In the improved magnetic sampler, the SMCO5 magnet 1 (Fig. 1) is encapsulated in a premolded plastic holder 2 using epoxy 7. Holder 2 has three equally spaced standoffs 3 (Figs. 1 and 2) to keep the magnet 1 at a fixed distance from the surface 6 being sampled. An index mark 4 aids in determining the starting point during subsequent analysis of the collected particles. Also, a gold coating is sputtered onto the entire exterior surface 5 because the analytical equipment requires a conductive surface. It should be noted that the standoffs are small in size to reduce the possibility of sweeping particles out of the way of the sampler. Also, the premolded plastic holder 2 and the epoxy encapsulation are of such materials that permit immersion in acid to remove stray magnetic particles prior to sampling. Reference (*) D. E. Elsenmann, M. A. Parker and J. A. Pesch, "Method for Collecting Magnetic Contaminants," IBM Technical Disclosure Bulletin 25, 759 (July 1982).

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