Low-Temperature Sintering of Y-Li-Ca-Doped AlN Ceramics

Journal of Inorganic Materials

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Low-Temperature Sintering of Y-Li-Ca-Doped AlN Ceramics

Xu Xiao-Lei; LI Wen-Lan; ZHUANG Han-Rui; Xu Su-Ying; Li Min-Zhong

Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China

Received:1998-03-09 Revised:1998-05-12 Published:1999-02-20 Online:1999-02-20

Abstract

Abstract: The paper studied low-temperature sintering of Y-Li-Ca-Doped anti-hydrolysis AlN powders synthesized by SHS method. It is found that
Y-Li-Ca additive systems are beneficial for low-temperature sintering of AlN ceramics. AlN samples with density of 3.29g/cm³and thermal
conductivity of 97 W/m·K were obtained after sintering at 1675℃ for 6 h with the additions of 5wt% YLiO₂ and 0.5wt% CaF₂.
The work also indicates that YLiO₂-CaF₂ is better for low-temperature sintering of AlN than YLiO₂-CaCO₃ under the same sintering conditions.

Key words: AlN ceramics, low-temperature sintering, thermal conductivities, YLiO₂-CaF₂

CLC Number:

TQ133

Xu Xiao-Lei,LI Wen-Lan,ZHUANG Han-Rui,Xu Su-Ying,Li Min-Zhong. Low-Temperature Sintering of Y-Li-Ca-Doped AlN Ceramics[J]. Journal of Inorganic Materials.

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Low-Temperature Sintering of Y-Li-Ca-Doped AlN Ceramics

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