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Title: Method for fabricating boron carbide articles

Abstract

The present invention is directed to the fabrication of boron carbide articles having length-to-diameter or width ratios greater than 2 to 1. The process of the present invention is practiced by the steps comprising hot pressing boron carbide powder into article segments or portions in which the segments have a length-to-diameter or width ratio less than 1.5, aligning a plurality of the initially hot-pressed segments in a hot-pressing die with the end surfaces of the segments placed in intimate contact with one another, and then hot pressing the aligned segments into an article of the desired configuration. The resulting article exhibits essentially uniform density throughout the structure with the bonds between the segments being equivalent in hardness, strength, and density to the remainder of the article.

Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Clinton, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
863622
Patent Number(s):
4215088
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; fabricating; boron; carbide; articles; directed; fabrication; length-to-diameter; width; ratios; process; practiced; steps; comprising; hot; pressing; powder; article; segments; portions; ratio; aligning; plurality; initially; hot-pressed; hot-pressing; die; surfaces; placed; intimate; contact; aligned; desired; configuration; resulting; exhibits; essentially; uniform; density; throughout; structure; bonds; equivalent; hardness; strength; remainder; uniform density; carbide powder; boron carbide; hot pressing; intimate contact; desired configuration; resulting article; width ratio; carbide articles; hot press; essentially uniform; fabricating boron; pressing boron; /264/156/

Citation Formats

Ardary, Zane L., and Reynolds, Carl D. Method for fabricating boron carbide articles. United States: N. p., 1980. Web.
Ardary, Zane L., & Reynolds, Carl D. Method for fabricating boron carbide articles. United States.
Ardary, Zane L., and Reynolds, Carl D. Tue . "Method for fabricating boron carbide articles". United States. https://www.osti.gov/servlets/purl/863622.
@article{osti_863622,
title = {Method for fabricating boron carbide articles},
author = {Ardary, Zane L. and Reynolds, Carl D.},
abstractNote = {The present invention is directed to the fabrication of boron carbide articles having length-to-diameter or width ratios greater than 2 to 1. The process of the present invention is practiced by the steps comprising hot pressing boron carbide powder into article segments or portions in which the segments have a length-to-diameter or width ratio less than 1.5, aligning a plurality of the initially hot-pressed segments in a hot-pressing die with the end surfaces of the segments placed in intimate contact with one another, and then hot pressing the aligned segments into an article of the desired configuration. The resulting article exhibits essentially uniform density throughout the structure with the bonds between the segments being equivalent in hardness, strength, and density to the remainder of the article.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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