Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PREPARATION METHOD FOR COPPER PLATE-COVERED SILICON NITRIDE CERAMIC SUBSTRATE
A preparation method for a copper plate-covered silicon nitride ceramic substrate is provided. The structure of the copper plate-covered silicon nitride ceramic substrate includes a silicon nitride ceramic substrate, copper sheets disposed on the upper and lower sides of the silicon nitride ceramic substrate and soldering layers disposed between the copper sheets and the silicon nitride ceramic substrate; the composition of the silicon nitride ceramic substrate comprises a silicon nitride phase (more than or equal to 95 wt %); and a grain boundary phase (containing at least three elements (Y, Mg and O) and less than or equal to 5 wt %, and the content of a crystalline phase in the grain boundary phase is more than or equal to 40 vol %); and the sintering aids are Y2O3 and MgO. The two-step sintering process comprises: in a nitrogen atmosphere, performing low-temperature heat treatment and high-temperature heat treatment in sequence.
PREPARATION METHOD FOR COPPER PLATE-COVERED SILICON NITRIDE CERAMIC SUBSTRATE
A preparation method for a copper plate-covered silicon nitride ceramic substrate is provided. The structure of the copper plate-covered silicon nitride ceramic substrate includes a silicon nitride ceramic substrate, copper sheets disposed on the upper and lower sides of the silicon nitride ceramic substrate and soldering layers disposed between the copper sheets and the silicon nitride ceramic substrate; the composition of the silicon nitride ceramic substrate comprises a silicon nitride phase (more than or equal to 95 wt %); and a grain boundary phase (containing at least three elements (Y, Mg and O) and less than or equal to 5 wt %, and the content of a crystalline phase in the grain boundary phase is more than or equal to 40 vol %); and the sintering aids are Y2O3 and MgO. The two-step sintering process comprises: in a nitrogen atmosphere, performing low-temperature heat treatment and high-temperature heat treatment in sequence.
PREPARATION METHOD FOR COPPER PLATE-COVERED SILICON NITRIDE CERAMIC SUBSTRATE
LIU XUEJIAN (Autor:in) / ZHANG HUI (Autor:in) / YAO XIUMIN (Autor:in) / LIU YAN (Autor:in) / JIANG JINDI (Autor:in) / HUANG ZHENGREN (Autor:in) / CHEN ZHONGMING (Autor:in)
29.02.2024
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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