为制备 Fe-6 . 5% Si 高硅钢片,先利用 PCVD 技术在 0 . 2 mm 厚的纯铁片表面沉积硅,再进行高温扩散。 通过正交实验分析了沉积硅的工艺参数对表层硅含量的影响,并研究了扩散参数对截面硅含量分布的影响。 结果表明:以 10% SiH₄+90% Ar 作为渗源气,在 500 ℃ 下沉积 20 min,所得样品的表层硅含量高达 40 . 5% ;然后在工业纯氢气的保护下,于 1050 ℃ 保温 60 min,可获得满足要求的 Fe-6 . 5% Si 高硅钢片。

Fe-6 . 5 % Si high silicon steel sheet was available after silicon was deposited on the surface of plain pure steel sheet with 0 . 2 mm heavy through PCVD, then treated at a high temperature. Analyzed the impact of deposition process parameters on the surface of the silicon content by orthogonal test, the relationship between diffusion parameters and the cross-sectional distribution of silicon content was studied. The results show that 40 . 5 % of the surface silicon is obtained by the 10 % SiH₄and 90 % Ar as the seepage source, 500 ℃ deposition for 20 min. Meeting the requirements of Fe-6 . 5 % Si high silicon steel sheet is obtained in the protection of industrial pure H₂at 1050 ℃ insulating for 60 min.