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Title: Method for locating metallic nitride inclusions in metallic alloy ingots

Abstract

A method of determining the location and history of metallic nitride and/or oxynitride inclusions in metallic melts. The method includes the steps of labeling metallic nitride and/or oxynitride inclusions by making a coreduced metallic-hafnium sponge from a mixture of hafnium chloride and the chloride of a metal, reducing the mixed chlorides with magnesium, nitriding the hafnium-labeled metallic-hafnium sponge, and seeding the sponge to be melted with hafnium-labeled nitride inclusions. The ingots are neutron activated and the hafnium is located by radiometric means. Hafnium possesses exactly the proper metallurgical and radiochemical properties for this use.

Inventors:
 [1];  [2];  [1];  [2]
  1. Albany, OR
  2. Corvallis, OR
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
868274
Patent Number(s):
5110546
Assignee:
United States of America as represented by Secretary of (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; locating; metallic; nitride; inclusions; alloy; ingots; determining; location; history; oxynitride; melts; steps; labeling; coreduced; metallic-hafnium; sponge; mixture; hafnium; chloride; metal; reducing; mixed; chlorides; magnesium; nitriding; hafnium-labeled; seeding; melted; neutron; activated; located; radiometric; means; possesses; exactly; proper; metallurgical; radiochemical; properties; reduced metal; metallic alloy; metallic melt; chemical properties; metallic nitride; neutron activated; nitride inclusions; /420/

Citation Formats

White, Jack C, Traut, Davis E, Oden, Laurance L, and Schmitt, Roman A. Method for locating metallic nitride inclusions in metallic alloy ingots. United States: N. p., 1992. Web.
White, Jack C, Traut, Davis E, Oden, Laurance L, & Schmitt, Roman A. Method for locating metallic nitride inclusions in metallic alloy ingots. United States.
White, Jack C, Traut, Davis E, Oden, Laurance L, and Schmitt, Roman A. Wed . "Method for locating metallic nitride inclusions in metallic alloy ingots". United States. https://www.osti.gov/servlets/purl/868274.
@article{osti_868274,
title = {Method for locating metallic nitride inclusions in metallic alloy ingots},
author = {White, Jack C and Traut, Davis E and Oden, Laurance L and Schmitt, Roman A},
abstractNote = {A method of determining the location and history of metallic nitride and/or oxynitride inclusions in metallic melts. The method includes the steps of labeling metallic nitride and/or oxynitride inclusions by making a coreduced metallic-hafnium sponge from a mixture of hafnium chloride and the chloride of a metal, reducing the mixed chlorides with magnesium, nitriding the hafnium-labeled metallic-hafnium sponge, and seeding the sponge to be melted with hafnium-labeled nitride inclusions. The ingots are neutron activated and the hafnium is located by radiometric means. Hafnium possesses exactly the proper metallurgical and radiochemical properties for this use.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

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