Sn-Ni化学镀硅酸钙镁矿物晶须的制备与表征

PREPARATION AND CHARACTERIZATION OF SN-NI-COATED CALCIUM-MAGNESIUM SILICATE WHISKER

以硅酸钙镁晶须为原料,采用化学镀方法制备一种镀Sn-Ni硅酸钙镁晶须,并用SEM,XRD,EDS和FT-IR对镀Sn-Ni硅酸钙镁晶须进行表征。结果表明:镀Sn-Ni硅酸钙镁晶须是一种针状结构的硅酸盐晶须材料,除有部分聚集增粗外,其形貌几乎没有变化;镀Sn-Ni硅酸钙镁晶须的主要化学组成为:w(O)48.24%,w(Si)10.78%,w(Mg)5.44%,w(Ca)2.26%,w(Sn)22.45%,w(Ni)2.19%,w(Na)4.38%,w(P)2.46%和w(S)1.80%;镀Sn-Ni硅酸钙镁晶须在1100cm-1～850cm-1强吸收区的振动频率的增加值与在750cm-1～600cm-1弱吸收区的振动频率的降低值均为4.98cm-1;镀Sn-Ni硅酸钙镁晶须的主体结构和化学键没有发生根本上改变,Sn-Ni化学镀在本质上是一种物理包覆过程。该研究为提高矿产资源的综合开发和利用水平提供了一种新的思路和方法。

A new type of Sn-Ni-coated calcium-magnesium silicate whisker was prepared by using calcium-magnesium silicate whisker as the raw material. The material was characterized by scanning electron microscope （SEM）, energy distribute spectrum （EDS）, X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FT-IR）. The experiment results showed that the metalized treatment of Sn-Ni-coated calcium-magnesium silicate whisker was silicate mineral whisker with spinal crystal structure and did not lead to the change of whisker surface structure except the aggregation of the minority. The main chemical components of the Sn-Ni-coated whisker was characterized by w（O） 48.24%,w（Si）10.78%,w（Mg） 5.44%,w（Ca） 2.26%,w（Sn） 22. 45% ,w（Ni）2.19% ,w（Na） 4.38%,w（P） 2.46% andw（S） 1.80%. The vibration frequency of the Sn-Ni-coated whisker increased by 4. 98 cm^-1 in the infrared stronger absorption region from 1 100 cm^-1 to 850 cm^-1 ,which was equal to the reduction in the infrared weaker absorption region from 750 cm^-1 to 600 cm^-1. The main structure and chemical bond of the whisker did not fundamentally changed and chemical plating Sn-Ni was physical sedimentary and coating process in itself. This paper proposed a new method about mineral resources to enhance the intensive processing and the comprehensive utilization level.