C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/115
C22C 19/03 (2006.01)
Patent
CA 1044926
ABSTRACT OF THE DISCLOSURE A nickel-base metal-ceramic heat-resistant sealing material, comprising, weight per cent: silicon dioxide, from 0.5 to 8.0 boron nitride, from 1.0 to 10.0 nickel, the balance. The material has a reduced hardness ranging from 25 to 40 kg/mm2 and enhanced heat resistance and thermal stability. The material is adapted mainly for producing sealing parts, such as, insert-pieces for turbine rotary shrouds designed to pre- clude the leakage of hot gases which could have taken place in case of increased clearances between the surface of the sealing part in the rim of the turbine shroud and rotating blades of a turbine rotor. The material is suitable for producing sealing members in the form of plates, bushes and bands useful for continuous operation over 3000 hours at 1000°C or for short- term operation at 1200°C.
229109
Fatjuk Nina M.
Kurakin Viktor I.
Kurganov Vasily A.
Markin Mikhail I.
Matjushenko Raisa S.
Fatjuk Nina M.
Kurakin Viktor I.
Kurganov Vasily A.
Markin Mikhail I.
Matjushenko Raisa S.
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