The influence of ZrB2-SiC powders mechanical treatment on the structure of sintered ceramic composites

International Seminar on Interdisciplinary Problems in Additive Technologies

材料科学;物理学

Buyakova, S.^1,2,3 ; Burlachenko, A.^1,3 ; Mirovoi, Yu.^1 ; Sevostiyanova, I.^1 ; Kulkov, S.^1,2,3

Institute of Strength Physics and Materials Science, SB RAS, 2/4, pr. Akademicheskii, Tomsk

634055, Russia^1

Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk

634050, Russia^2

Tomsk State University, 36, Lenin Avenue, Tomsk

634050, Russia^3

关键词: Material densification;    Mechanical treatments;    Planetary ball milling;    Sample density;    SiC ceramics;    SiC powder;    Sintered ceramics;    Sintering process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/140/1/012006/pdf
DOI  :  10.1088/1757-899X/140/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The effect of mechanical treatment by planetary ball milling on the properties of hot pressed ZrB2- SiC ceramics was studied. It was shown that material densification after mechanical treatment is finished at initial stages of sintering process. Addition of SiC leads to an essential increase of sample density to 99% of theoretically achievable for powder with 2% of SiC, as compared with ZrB2 with the density less than 76%. It was demonstrated that all defects that were accumulated during mechanical treatment are annealed during hot pressing, and there are no changes of CDD values in sintered ceramics.