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    • 8. 发明授权
    • Heat conductive colored aluminum nitride sintered body and method of
preparing the same
    • 导热色氮化铝烧结体及其制备方法
    • US5294388A
    • 1994-03-15
    • US922682
    • 1992-07-29
    • Kouhei ShimodaTakao MaedaKouichi SogaheMasaya Miyake
    • Kouhei ShimodaTakao MaedaKouichi SogaheMasaya Miyake
    • C04B35/581H01L21/48F27B9/04C04B35/58
    • C04B35/581H01L21/4807
    • A heat conductive aluminum nitride sintered body contains 100 parts by weight of aluminum nitride, at least 0.005 parts by weight and not more than 0.5 parts by weight of carbon, at least 0.01 parts by weight and not more than 15 parts by weight of a rare earth aluminum oxide in terms of the simple substance of a rare earth element, and at least 0.01 parts by weight and not more than 15 parts by weight of at least one element selected from a group of compounds containing elements belonging to the groups IVB, VB and VIB of the periodic table in terms of the simple substance of the element. Heat conductivity of the aluminum nitride sintered body is at least 100 W/m.multidot.K and not more than 270 W/m.multidot.K at the ordinary temperature. According to a method of preparing such an aluminum nitride sintered body, at least 0.01 parts by weight and not more than 5 parts by weight of carbon, at least 0.01 parts by weight and not more than 15 parts by weight of an oxide of a rare earth element, and at least 0.01 parts by weight and not more than 15 parts by weight of an oxide, a carbide or a nitride of an element belonging to the group IVB, VB or VIB of the periodic table are added to 100 parts by weight of aluminum nitride. A compact of this mixture is fired in a nonoxidizing atmosphere under a temperature of at least 1500.degree. C. and not more than 2100.degree. C.
    • 导热氮化铝烧结体含有100重量份的氮化铝,至少0.005重量份,不超过0.5重量份的碳,至少0.01重量份,不超过15重量份的稀有金属 以稀土元素的单质为基准的至少0.01重量份至少15重量份的选自包含属于IVB族,VB族的元素的化合物的族中的至少一种元素 和元素周期表的VIB。 氮化铝烧结体的导热率在常温下为至少100W / m×K且不大于270W / m×K。 根据制备这种氮化铝烧结体的方法,至少0.01重量份且不超过5重量份的碳,至少0.01重量份且不超过15重量份的稀有氧化物 并且将至少0.01重量份且不超过15重量份的元素周期表中IVB族,VB族或VIB族元素的氧化物,碳化物或氮化物加入到100重量份 的氮化铝。 将该混合物的压块在至少1500℃且不超过2100℃的温度下在非氧化气氛中焙烧。