Low-temperature instability of Ti(2)SnC: A combined transmission electron microscopy, differential scanning calorimetry, and x-ray diffraction investigations

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	Low-temperature instability of Ti(2)SnC: A combined transmission electron microscopy, differential scanning calorimetry, and x-ray diffraction investigations
	J. Zhang ; B. Liu ; J. Y. Wang ; Y. C. Zhou
刊名	Journal of Materials Research
	2009
卷号	24 期号:1 页码:39-49
关键词	liquid reaction synthesis thin-films oxidation behavior thermal-stability phase-stability whisker growth m2snc m ti3sic2 ti2alc al
ISSN号	0884-2914
中文摘要	Transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and x-ray diffraction (XRD) investigations were conducted oil the hot-pressed Ti(2)SnC bulk ceramic. Microstructure features of bulk Ti(2)SnC ceramic were characterized by using TEM, and a needle-shaped beta-Sn precipitation was observed inside Ti(2)SnC grains with the orientation relationship: (0001) Ti(2)SnC // (200) Sn and [1 (2) over bar 10] Ti(2)SnC // [001] Sn. With the combination of DSC and XRD analyses, the precipitation of metallic Sri was demonstrated to be a thermal stress-induced process during the cooling procedure. The reheating temperature, even as low as 400 degrees C, Could trigger the precipitation of Sn from Ti(2)SnC, which indicated the low-temperature instability of Ti(2)SnC. A substoichiometry Ti(2)Sn(x)C formed after depiction of Sn from ternary Ti(2)SnC phase. Under electron beam irradiation, metallic Sri was observed diffusing back into Ti(2)Sn(x)C. Furthermore, a new Ti(7)SnC(6) phase with the lattice constants of a = 0.32 and c = 4.1 nm was identified and added in the Ti-Sn-C ternary system.
原文出处	://WOS:000267207500006
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/32546]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Zhang,B. Liu,J. Y. Wang,et al. Low-temperature instability of Ti(2)SnC: A combined transmission electron microscopy, differential scanning calorimetry, and x-ray diffraction investigations[J]. Journal of Materials Research,2009,24(1):39-49.
APA	J. Zhang,B. Liu,J. Y. Wang,&Y. C. Zhou.(2009).Low-temperature instability of Ti(2)SnC: A combined transmission electron microscopy, differential scanning calorimetry, and x-ray diffraction investigations.Journal of Materials Research,24(1),39-49.
MLA	J. Zhang,et al."Low-temperature instability of Ti(2)SnC: A combined transmission electron microscopy, differential scanning calorimetry, and x-ray diffraction investigations".Journal of Materials Research 24.1(2009):39-49.