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以Cr_2O_3、Fe_2O_3和Al为实验原料,尿素作为渗氮剂,NaNO_3作为发热剂,采用自蔓延法制备氮化铬铁。通过热力学计算和实验研究,证明了自蔓延法制备氮化铬铁的可行性,并计算出了NaNO_3的加入量。采用XRD进行物相分析,用XRF检测主要金属元素的含量,其中Cr、Fe的质量分数分别为62.70%和33.25%;用定氮仪检测N元素的质量分数为3.42%,达到了氮化铬铁的生产标准。
Using Cr 2 O 3, Fe 2 O 3 and Al as raw materials, urea as nitriding agent and NaNO 3 as heating agent, ferrochromium nitride was prepared by self-propagating method. Through the thermodynamic calculation and experimental study, the feasibility of preparing the ferrochrome nitrogen by the self-propagating method was proved and the amount of NaNO 3 added was calculated. The phase analysis was carried out by XRD, and the content of major metal elements was detected by XRF. The mass fraction of Cr and Fe were 62.70% and 33.25% respectively. The mass fraction of N element was 3.42% Iron production standards.