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Title: Method of reducing the green density of a slip cast article

Abstract

The method disclosed in this specification is one of reducing the green density of an article cast in a slip casting operation. The article is cast from a casting slip containing silicon metal particles, yttrium containing particles, and a small amount of a fluoride salt which is effective to suppress flocculation of the silicon metal particles by y.sup.+3 ions derived from the yttrium containing particles. The method is characterized by the following step. A small amount of compound which produces a cation which will partly flocculate the particles of silicon metal is added to the casting slip. The small amount of this compound is added so that when the casting slip is slip cast into a casting mold, the partly flocculated particles of silicon will interrupt an otherwise orderly packing of the particles of silicon and particles of yttrium. In this manner, the green density of the slip cast article is reduced and the article may be more easily nitrided.

Inventors:
 [1];  [2]
  1. (Flat Rock, MI)
  2. (Birmingham, MI)
Issue Date:
OSTI Identifier:
865726
Patent Number(s):
4562041
Assignee:
Ford Motor Company (Dearborn, MI) OSTI
DOE Contract Number:  
P1928150
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; reducing; green; density; slip; cast; article; disclosed; specification; casting; operation; containing; silicon; metal; particles; yttrium; amount; fluoride; salt; effective; suppress; flocculation; derived; characterized; following; step; compound; produces; cation; partly; flocculate; added; mold; flocculated; interrupt; otherwise; orderly; packing; manner; reduced; easily; nitrided; metal particle; metal particles; yttrium containing; fluoride salt; casting slip; method disclosed; silicon metal; slip cast; containing particles; containing silicon; casting operation; slip casting; cast article; green density; casting mold; /419/

Citation Formats

Mangels, John A., and Dickie, Ray A. Method of reducing the green density of a slip cast article. United States: N. p., 1985. Web.
Mangels, John A., & Dickie, Ray A. Method of reducing the green density of a slip cast article. United States.
Mangels, John A., and Dickie, Ray A. Tue . "Method of reducing the green density of a slip cast article". United States. https://www.osti.gov/servlets/purl/865726.
@article{osti_865726,
title = {Method of reducing the green density of a slip cast article},
author = {Mangels, John A. and Dickie, Ray A.},
abstractNote = {The method disclosed in this specification is one of reducing the green density of an article cast in a slip casting operation. The article is cast from a casting slip containing silicon metal particles, yttrium containing particles, and a small amount of a fluoride salt which is effective to suppress flocculation of the silicon metal particles by y.sup.+3 ions derived from the yttrium containing particles. The method is characterized by the following step. A small amount of compound which produces a cation which will partly flocculate the particles of silicon metal is added to the casting slip. The small amount of this compound is added so that when the casting slip is slip cast into a casting mold, the partly flocculated particles of silicon will interrupt an otherwise orderly packing of the particles of silicon and particles of yttrium. In this manner, the green density of the slip cast article is reduced and the article may be more easily nitrided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

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