2.
    发明专利
    未知

    公开(公告)号:NO762302L

    公开(公告)日:1977-01-31

    申请号:NO762302

    申请日:1976-07-01

    Applicant: NORTON CO

    Inventor: WASHBURN M E

    Abstract: A porous refractory body is formed by bonding Si2ON2 grain or other suitable refractory grain with fine crystals of Si2ON2 formed in situ by firing a shaped body under nitridation conditions. The body has an open pore structure, is resistant to the constituents of an aluminum chloride electrolysis cell and has good structural strength.

    3.
    发明专利
    未知

    公开(公告)号:NO135465B

    公开(公告)日:1977-01-03

    申请号:NO245171

    申请日:1971-06-28

    Applicant: NORTON CO

    Inventor: WASHBURN M E

    Abstract: The production of silicon oxynitride bodies from solid reaction mixes of silicon and silica is facilitated, in terms of strength of product and dimensional stability by controlling the amount of gaseous nitrogen available during reaction. The maximum reaction rate, which can be controlled by control of the partial pressure of nitrogen, can vary from 26 percent per hour for furnace loads of 10 pounds, to 3 percent per hour for loads of 10,000 pounds. Argon has been found particularly useful to control the reaction.

    4.
    发明专利
    未知

    公开(公告)号:NO135465C

    公开(公告)日:1977-04-13

    申请号:NO245171

    申请日:1971-06-28

    Applicant: NORTON CO

    Inventor: WASHBURN M E

    Abstract: The production of silicon oxynitride bodies from solid reaction mixes of silicon and silica is facilitated, in terms of strength of product and dimensional stability by controlling the amount of gaseous nitrogen available during reaction. The maximum reaction rate, which can be controlled by control of the partial pressure of nitrogen, can vary from 26 percent per hour for furnace loads of 10 pounds, to 3 percent per hour for loads of 10,000 pounds. Argon has been found particularly useful to control the reaction.

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