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摘要
Based on the simulation of CSP process of low-temperature manufactured grain-oriented silicon steel, the nitriding process of the tested steel is researched under experimental condition through glow spectrum analysis and TEM analysis. The results show that with the increase of the nitriding time, temperature or NH3 concentration in nitriding atmosphere, the content of nitrogen in the nitrided specimen is increased. Analyzing the distribution of elements in steel by glow spectrum, the content of nitrogen atoms in steel increases after nitriding and nitrogen atoms aggregate on the surface of steel to reach the critical concentration, then diffuse into interior area and its content tends to be stable with the increase of nitriding distance. The nitrogen atoms combine with aluminum atoms, grow as precipitated phase AlN and then the AlN phases merge and converge after 900 ℃ nitriding, therefore, more precipitated phase forms and becomes more aggregated. ? 2019, Editorial Office of Jinshu Rechuli . All right reserved.
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