摘要
对Ａｌ＿７０Ｃｏ＿１５Ｔｂ＿５Ｎｉ＿１０合金进行了静高压（４．４０ＧＰａ）熔态（１４５０℃）淬火（冷却速率为１０￣２℃／ｓ）研究。首次在该系统中观察到准晶Ｔ相和一个新的十次准晶相关相形成。使用透射电镜对准晶相和准晶相关相进行了结构分析，得到了准晶相关相的晶胞参数。使用已有的理论模型对该相关相的形成进行了讨论。
In this paper ,samples of Al_70Co_15Tb_5Ni_10 in fusion state (1450℃) were quenchedwith a cooling rate of 10￣2℃/s under high static pressure (4. 40GPa). Decagonal quasicrystal anda new crystalline approximant were found in the samples for the first time. The structures of thedecagonal quasicrystal and the new crystalline approximant were analyzed by TEM. Lattice pa-rametere of the new crystalline approximant obtained from TEM observation are similar to thoseof the theoretical calculation.
出处
《高压物理学报》
CAS
CSCD
北大核心
1994年第2期141-145,共5页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金
关键词
准晶
相关相
静高压
熔态淬火
合金
quasicrystal, crystalline approximant, high-static pressure, quench in fusionstate, AlCoTbNi.
