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在硅酸盐体系下,利用微弧氧化方法,在Q235碳钢基体表面原位生长出一层均匀的陶瓷膜层;通过改变电源参数和氧化时间,研究陶瓷膜层厚度和粗糙度的变化规律。结果表明,微弧氧化陶瓷膜层呈现出一种不规则的多孔结构,陶瓷膜层由铁、硅、氧、磷元素组成,且以非晶态的形式存在;陶瓷膜层的厚度和粗糙度均随电源频率和峰值电流密度的提高逐渐变厚,随氧化时间的增长分为两个阶段,呈现出两种线性关系。
Under the silicate system, a uniform layer of ceramic coating was grown in situ on the surface of Q235 carbon steel by micro-arc oxidation. The variation of thickness and roughness of ceramic coating was studied by changing the power parameters and oxidation time . The results show that the micro-arc oxidation ceramic coating presents an irregular porous structure. The ceramic coating consists of iron, silicon, oxygen and phosphorus, and exists in amorphous form. The thickness and roughness of the ceramic coating Both increase gradually with the increase of power frequency and peak current density. With the increase of oxidation time, it is divided into two stages, showing two linear relationships.