Transmission Electron Microscopy Study on Nucleation Process of Precur-sor-derived Si-B-C-N Ceramics
Source abstract
Abstract
以透射电镜的先进分析方法为主要手段, 对前驱体制备Si-B-C-N陶瓷(T2-1)材料纳米尺度的微结构及其晶化过程进行了研究. 结果表明, 在直接经过1400℃热解后, 所得到的T2-1样品出现了非均匀的SiC和Si 3 N 4 的结晶以及石墨化或BCN的团簇. 为了有效保持材料强度并抑制高温易分解Si 3 N 4 相的析出, 对T2-1在1000℃热解以进行对比实验. 显微结构的观察表明, 经过低温热解的基体出现了均匀成分分相; 即使再经过1400℃下的退火, 仍能有效抑制Si 3 N 4 纳米晶的析出, 从而增进了材料的高温稳定性.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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