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Sandblasting nozzleA nozzle for use with abrasive and/or corrosive materials is formed of sintered ceramic compositions having high temperature oxidation resistance, high hardness and high abrasion and corrosion resistance. The ceramic may be a binary solid solution of a ceramic oxide and silicon nitride, and preferably a ternary solid solution of a ceramic oxide, silicon nitride and aluminum nitride. The ceramic oxide is selected from a group consisting of Al2O3, Y2O3 and Cr2O3, or mixtures of those compounds. Titanium carbide particles are dispersed in the ceramic mixture before sintering. The nozzles are encased for protection from external forces while in use by a metal or plastic casing.
Document ID
19810016835
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Perkins, G. S. (JPL California Inst. of Technology, Pasadena, United States)
Pawlik, E. V. (JPL California Inst. of Technology, Pasadena, United States)
Phillips, W. M. (California Inst. of Technology Pasadena, United States)
Date Acquired
September 4, 2013
Publication Date
February 24, 1981
Subject Category
Mechanical Engineering
Report/Patent Number
Patent Number: NASA-CASE-NPO-13823-1
Patent Number: US-PATENT-4,252,768
Patent Application Number: US-PATENT-APPL-SN-658487
Accession Number
81N25371
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-NPO-13823-1|US-PATENT-4,252,768
Patent Application
US-PATENT-APPL-SN-658487

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