Method for the determination of the element concentration in ele

Details Method for the determination of the element concentration in ele Method for the determination of the element concentration in ele

1990-08-31

1991-10-15

Berman, Jack I.

Radiant energy

Inspection of solids or liquids by charged particles

Methods

250310, 21912123, 378 46, 378 90, G01N 23225

Patent

active

050576887

ABSTRACT:
A method for determining the element concentration in electron beam melting is used for the continous measurement during the melting process especially for melting alloys. According to the invention, the X-radiation generated during melting is utilized by concurrently measuring the intensity of the characteristic radiation of the element to be determined and the intensity of another portion of the X-ray spectrum from the same location of the melt. The quotient of both measurands then is a function of the concentration of the element to be determined.

REFERENCES:
patent: 4791301 (1988-12-01), Bauer et al.
patent: 4962516 (1990-10-01), Soezima
T. Kusamichi et al., "Fundamental Study on the Making of Titanium Alloy Ingot by Electron Beam Melting"; 10/29-31/89.
A. Mitchell et al., "Chemical Control in Electron Beam Melting"; 11/8-10/84.
A. Mitchell, "On-Line Composition Control in Vacuum Melting Systems"; 11/8-10/87.

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