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    알루미나계 소결체의 제조방법
    3.
    发明授权
    알루미나계 소결체의 제조방법 失效
    氧化铝基烧结体的生产方法

    公开(公告)号：KR1019890003511B1

    公开(公告)日：1989-09-23

    申请号：KR1019860010377

    申请日：1986-12-04

    Applicant: 한국과학기술연구원

    Inventor： 강석중 ,  백용균 ,  윤덕용 ,  강대갑

    IPC: C04B35/64

    Abstract: A method for sintered alumina including the change of initial sintering condition under oxygen or nitrogen to that under different one among oxygen, nitrogen or argon during normal pressure sitering process at 1600≦̸C has the advantage to obtain more compact structure and fine grain size resulted from depressing the grain growth.

    Abstract translation: 一种烧结氧化铝的方法，包括在1600℃和1000℃的正常压力筛选过程中，在氧气或氮气下，初始烧结条件在氧气，氮气或氩气中的初始烧结条件的变化，C具有获得更紧凑的结构和由 抑制粮食增长。

    탄화텅스턴계 초경합금의 제조시 용침에 의하여 잔류 기공을 제거하고 결합금속의 조성을 변경하는 방법
    4.
    发明授权
    탄화텅스턴계 초경합금의 제조시 용침에 의하여 잔류 기공을 제거하고 결합금속의 조성을 변경하는 방법 失效
    在碳化钨基硬质合金的生产中通过渗入来去除残余孔并改变结合金属的组成的方法

    公开(公告)号：KR1019900002040B1

    公开(公告)日：1990-03-31

    申请号：KR1019850009758

    申请日：1985-12-24

    Applicant: 한국과학기술연구원

    Inventor： 은광용 ,  박종구 ,  윤덕용

    IPC: B22F1/02

    Abstract: The molten infiltrating of forming media of WC-3-5% Co, that of Co powder on sintered material of this for 1hr at 1200≦̸C, that of C-25% WC mixed powder, that of Co-25% WC-0.1% C mixed powder, that of Ni- 25% WC mixed powder, that of WC-25.3% Fe-6.7% Ni-3.3%Co mixed powder or molten infiltrating media of these materials sintered for 1hr at 1200≦̸C in a vacuum sintering furnace at 1350-1500≦̸C can remove residual pores and change the composition of binding.

    Abstract translation: WC-3-5％Co的成形介质的熔融渗透，烧结材料的Co粉末在1200℃和nlE℃下熔融1小时; C，C-25％WC混合粉末，Co-25％WC-0.1 ％C混合粉末，Ni-25％WC混合粉末，WC-25.3％Fe-6.7％Ni-3.3％Co混合粉末或这些材料的熔融渗透介质在1200＆nlE下烧结1小时; C在真空烧结 炉子在1350-1500＆nlE; C可以去除残留的孔隙，改变结合的组成。

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