Method for locating metallic nitride inclusions in metallic alloy ingots

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

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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:

White, Jack C ^[1]; Traut, Davis E ^[2]; Oden, Laurance L ^[1]; Schmitt, Roman A ^[2]

Albany, OR
Corvallis, OR

Issue Date:: 1992-01-01

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

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N23/222 - using neutron activation analysis [NAA]
G01N33/205 - in liquid state, e.g. molten metals
G01N2223/0745 - neutron-gamma activation analysis
G01N2223/63 - turbine blades
G01N2223/6265 - sample with radioactive tracer, tag, label

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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.

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                    White, Jack C, Traut, Davis E, Oden, Laurance L, & Schmitt, Roman A. Method for locating metallic nitride inclusions in metallic alloy ingots.  United States.

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                    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.

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@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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