Title: Porous bodies

Abstract: The open pores of a porous silicon nitride body are partly or wholly filled with and adherent, refractory filler comprising cordierite or a borosilicate glass, thereby to reduce the gas-permeability of the body. A body, so treated, may, for example, have application as a recuperator.

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Inventors: Henney, John W. (Abingdon, GB)
Wilks, Ronald S. (Newbury, GB)

Application Number: 806062
Filing Date: 1977-06-13
Publication_date: 1979-03-06
Assignee: United Kingdom Atomic Energy Authority (London, GB2)
Primary Class(es): 427/226 427/343, 427/344, 427/377, 427/380, 427/399, 427/419.3, 427/419.4, 427/419.6
Other Classes:
US Patent Ref:

2490260	, 1951	Ehrhardt	427/226.
2578956	Dec, 1951	Weinrich	427/250.
3078186	Feb, 1963	Tierney	427/419.
3232782	Feb, 1966	Shannon	427/343.
3460971	Aug, 1969	Bonis et al.	427/419.
3535154	Oct, 1970	Meyer-Simon	427/226.
3539379	Nov, 1970	Mayer	427/226.
3754944	Aug, 1973	Hardy	427/380.
3811928	May, 1974	Henney et al.	427/399.
3849181	Nov, 1974	Green	427/344.
3983198	Sep, 1976	Mangels	427/399.
4021590	May, 1977	Vangbo	427/344.

Other Refs:
Primary Examiner: Smith, Ronald H.
Assistant Examiner: Bell, Janyce A.
Attorney: Larson, Taylor and Hinds