INCREASING ALUMINUM NITRIDE THERMAL CONDUCTIVITY VIA PRE-DENSIFICATION TREATMENT
A method for producing dense aluminum nitride articles having enhanced thermal conductivity is disclosed. The method comprises the steps of forming a powder compact comprising AlN alone or in combination with other ceramic compounds, adding a densification aid, subsequently exposing the compact to a...
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Main Author | |
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Format | Patent |
Language | English |
Published |
22.03.1990
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Abstract | A method for producing dense aluminum nitride articles having enhanced thermal conductivity is disclosed. The method comprises the steps of forming a powder compact comprising AlN alone or in combination with other ceramic compounds, adding a densification aid, subsequently exposing the compact to an environment which serves to reduce the oxygen content of the compact, and then densifying the compact by sintering or hot-pressing to provide a dense article. The densified AlN article is found to have a high thermal conductivity.
On a mis au point un procédé de production d'articles de nitrure d'aluminium denses présentant une conductivité thermique augmentée. Le procédé comprend les étapes consistant à former un agglomérat de poudre comprenant de l'AlN seul ou combiné avec d'autres composés céramiques, à ajouter un auxiliaire de densification, puis à exposer ledit agglomérat à un environnement servant à réduire la teneur en oxygène de l'agglomérat, et ensuite à densifier ledit agglomérat par frittage ou compression à chaud afin d'obtenir un article dense. On a découvert que ledit article d'AlN densifié présente une conductivité thermique élevée. |
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AbstractList | A method for producing dense aluminum nitride articles having enhanced thermal conductivity is disclosed. The method comprises the steps of forming a powder compact comprising AlN alone or in combination with other ceramic compounds, adding a densification aid, subsequently exposing the compact to an environment which serves to reduce the oxygen content of the compact, and then densifying the compact by sintering or hot-pressing to provide a dense article. The densified AlN article is found to have a high thermal conductivity.
On a mis au point un procédé de production d'articles de nitrure d'aluminium denses présentant une conductivité thermique augmentée. Le procédé comprend les étapes consistant à former un agglomérat de poudre comprenant de l'AlN seul ou combiné avec d'autres composés céramiques, à ajouter un auxiliaire de densification, puis à exposer ledit agglomérat à un environnement servant à réduire la teneur en oxygène de l'agglomérat, et ensuite à densifier ledit agglomérat par frittage ou compression à chaud afin d'obtenir un article dense. On a découvert que ledit article d'AlN densifié présente une conductivité thermique élevée. |
Author | KNUDSEN, ARNE, K |
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Snippet | A method for producing dense aluminum nitride articles having enhanced thermal conductivity is disclosed. The method comprises the steps of forming a powder... |
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SubjectTerms | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
Title | INCREASING ALUMINUM NITRIDE THERMAL CONDUCTIVITY VIA PRE-DENSIFICATION TREATMENT |
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