取向硅钢产品表面质量检测对比分析

检测了3家不同企业取向硅钢成品板表征表面质量的指标，同时对表面层采用扫描电镜和能谱仪进行微观结构和化学成分组成进行检测。对比不同企业的成品板表面质量指标和微观结构发现：不同企业的取向硅钢表面层质量有差异，A产品表面绝缘电阻高于B和C产品且后者表面绝缘电阻相当，B和C产品涂层附着性和耐蚀性优于A产品。从微观形貌和成分分析上可以得出，A产品绝缘层厚是表面绝缘电阻大的原因之一，B、C产品附着性级别好是由于钉扎在基体的颗粒大或是距离硅酸镁较近，A产品表面有裂纹导致耐蚀性下降。

Comparative inspection and analysis of surface quality of grain oriented silicon steel products#br#

The surface quality indexes of grain oriented silicon steel plates/sheets from three different enterprises were tested. The microstructure and chemical composition of the surface layers were examined by scanning electron microscope and energy dispersive spectrometer. Comparing the surface quality indexes and microstructures of the samples from different enterprises, it is observed that both the surface layer qualities and the surface insulation resistances of the three products are different. The surface insulation resistance of A product is higher than B and C products, with the equivalent of the surface insulation resistance of B and C products. The coating adhesion and corrosion resistance of B and C products are better than those of A product. From the analysis of morphology and composition, it can be concluded that one reason for the high surface insulation resistance of A product is the thick insulation layer, and the good adhesion level of B and C products is due to the large spinal/particles pinned on the matrix or close to magnesium forsterite, and the corrosion resistance of A product decreases due to the micro cracks on the insulating layer surface.