Surface voids sealed from pressurizing gas. Coating technique enables healing of surface defects by hot isostatic pressing (HIP). Internal pores readily closed by HIP, but surface voids like cracks and pores in contact with pressurizing gas not healed. Applied to casting or weldment as thick slurry of two glass powders: one melts at temperature slightly lower than used for HIP, and another melts at higher temperature. For example, powder is glass of 75 percent SiO2 and 25 percent Na2O, while other powder SiO2. Liquid component of slurry fugitive organic binder; for example, mixture of cellulose acetate and acetone. Easy to apply, separates voids from surrounding gas, would not react with metal part under treatment, and easy to remove after pressing.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Glass Coats For Hot Isostatic Pressing


    Contributors:

    Published in:

    Publication date :

    1989-06-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Hot isostatic pressing

    ARCHER GEOFFREY FREDERICK | European Patent Office | 2015

    Free access

    POWDER HOT ISOSTATIC PRESSING

    PRICE HOWARD JAMES / CHIPPENDALE JOHN | European Patent Office | 2020

    Free access

    POWDER HOT ISOSTATIC PRESSING

    PRICE HOWARD / CHIPPENDALE JOHN | European Patent Office | 2019

    Free access

    Hot isostatic pressing of superalloys

    Moser,G. / Bayer,E. / Seilstorfer,H. et al. | Automotive engineering | 1981


    Hot isostatic pressing of Superalloys

    Moser, G. / Bayer, E. / Seilstorfer, H. | Tema Archive | 1981