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采用单辊法制备出纳米晶Cu薄带,利用X射线衍射对纳米晶Cu薄带的结构进行分析,并研究了工艺参数对结构的影响。实验发现:纳米晶Cu薄带的平均晶粒度为65.17~121.8 nm,辊轮转速越快,喷铸压力越小,保护气压越大,保护气体越冷,薄带的晶粒尺寸越小;纳米晶内部均存在晶格畸变和晶胞参数的涨落,说明采用单辊法制备纯金属薄带会在材料内部产生不同程度的晶格扭曲,Cu带处于非稳定状态;所有样品均发生(200)晶面择优取向,原因可能与单辊法的快淬工艺有关。
Nanocrystalline Cu ribbons were prepared by single roll method. The structure of nanocrystalline Cu ribbon was analyzed by X-ray diffraction. The influence of process parameters on the structure was also studied. The experimental results show that the average grain size of nanocrystalline Cu ribbon is 65.17 ~ 121.8 nm, the faster the roll speed, the smaller the injection pressure, the larger the protective gas pressure, the cooler the protective gas, the smaller the grain size of the ribbon; The crystal lattice distortion and lattice parameter fluctuations exist in the nanocrystal, which shows that the single-roll method can produce different degree of lattice distortion in the material and the Cu band is in an unstable state. All the samples have occurred 200) crystal face preferred orientation, the reason may be related to the single-roll quenching process.