Synthesis Of SiC/Cu Composite Powders From Polycarbosilane And Cupric Nitrate Trihydrate

Archives of Metallurgy and Materials

S.-T. Oh¹  D.-H. Riu¹  D.-M. Yim¹  S.-R. Bang¹ 

[1] DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY, SEOUL 139-743, KOREA

关键词: Keywords: Cu/SiC composite powders;    Polycarbosilane;    Cu-nitrate;    Microstructure;   

DOI  :  10.1515/amm-2015-0110

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

SiC/Cu composite powders with the barrier coating of SiC-Al onto SiC powders were synthesized from Al-containing polycarbosilane precursor and Cu-nitrate hydrate. Curing at 200°C and high temperature pyrolysis at 1600°C was used to achieve the crystallization of precursor, forming the SiC-Al coating on the surface of SiC powders. A core-shell structure with the core of SiC and the shell of Cu was constructed by calcination and hydrogen-reduction of Cu nitrate hydrate. XRD and SEM analysis revealed that the β-SiC and 4H-SiC phases were formed on the surface of the initial α-SiC powders. Also, it was observed by EDX mapping that core powders of SiC were homogeneously surrounded with the fine Cu particles on their surface.

【 授权许可】

Unknown