陆跃华
,
刘纯鹏
金属学报
在1150—1250℃的范围内研究了Cu_2S与Cu_20交互反应的动力学,反应速率随Cu_2O颗粒表面积的增加而增加,温度的影响不明显。假设氧通过反应边界层液膜中的扩散是交互反应速率的控制步骤,最终动力学方程为 α=6.69×10~(-2)At (0<α<0.74) In(1-α)=-A(9.83×10~(-2)t+1.76)(0.74<α<1)
关键词:
Cu_2O
,
Cu_2S
,
interaction
,
kinetics
,
null
周延春
材料研究学报
用电化学方法在不锈钢基体上沉积了多晶Cu2O薄膜并用X射线衍射和扫描电镜进行了分析.研究了溶液温度对薄膜相组成、晶粒尺寸和择优取向的影响当溶液的pH=9、温度低于50℃时得到的是Cu2O/Cu复相薄膜,纯Cu2O薄膜可在溶液温度高于50℃时获得纯Cu2O薄膜具有(100)择优取向实验发现薄膜的晶粒尺寸随溶液温度的增加从0.12μm增加到0.65μm。
关键词:
Cu_2O
,
null
,
null
LU Yuehua Kunming Institute of Precious Metals
,
Kunming
,
ChinaLIU Chunpeng Kunming Institute of Technology
,
Kunming
,
China Research Assistant
,
Laboratory No.1
,
Kunming Institute of Precious Metals
,
Kunming 650031
,
China
金属学报(英文版)
Reaction between Cu_2S and Cu_2O was investigated at 1150 to 1250℃.The reaction rate in- creases with the increase of surface area of Cu_2O grains and depends unobviously on temper- ature.At the suggestion of controlling step of reaction rate being oxygen diffusion through the liquid layer along reaction boundaries,two final kinetical equations would be made as follows: x=6.69×10~(-2)At for 0<α<0.74 and ln(l-α)=-A(9.83×10~(-2)t+1.76)for 0.74<α<1,where α is SO_2 evolved in time t and A is surface area of Cu_2O particles.
关键词:
Cu_2O
,
null
,
null
