Chemistry: analytical and immunological testing – Metal or metal containing – Presence of a component of steel
Patent
1984-11-13
1987-02-17
Lacey, David L.
Chemistry: analytical and immunological testing
Metal or metal containing
Presence of a component of steel
436103, 436169, 436175, G01N 3320
Patent
active
046439790
ABSTRACT:
Phosphorus segregates formed in cast steel upon solidifying are detected by a novel method comprising applying a metal etching reagent, for example, lithium chloride in ethanol, to a surface area of the steel to be examined, and attaching a sheet of test paper bearing an aqueous solution of silver nitrate to said surface, thereby detecting phosphorus segregates as stains on the sheet.
REFERENCES:
patent: 3796543 (1974-03-01), Kamphake
patent: 4420567 (1983-12-01), McMahon et al.
Chemical Abstracts, vol. 26, 1932, p. 5871, Columbus, Ohio, U.S., M. Niessner; "New Methods for Identifying Minor Constituents of Alloys and for Detecting Segregation in Metal-Working Materials", and Mikrochemie 12, 1-24 (1932).
Chemical Abstracts, vol. 41, 1947, col. 6171 d-f, Columbus, Ohio, U.S.; H. L. Katz et al: "Direct Colorimetric Method for Phosphorus in all Types of Steel" and Anal. Chem. 19, 612-14 (1947).
Chemical Abstracts, vol. 40, 1946, col. 7065-7069, Columbus, Ohio, U.S.; N. D. Ivanova et al.: "Colorimetric Determination of Phosphorus in Iron Alloys" and Zavodskaya Lab. 12, 246-8 (1946).
T. S. Harrison, The Determination of Phosphorus in Heaematite Iron and Steel by The Molybdenum Blue Method, J.S.C.I., 68, Mar. 1949, pp. 84-88.
Funahashi Yoshiko
Harimaya Senichi
Kamino Yoshikazu
Kitaoka Hidenari
Matsumura Yasuharu
Kawasaki Steel Corporation
Lacey David L.
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