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涂层碳氮共渗（Coat-Nitrocarburizing）是一种用于铁和钢的化学热处理方法。其处理过程包括通过封闭容积内三氯杂苯（triazing,又译三嗪）聚合物试剂升华与分解的气态产物在工件表面形成沙层。此方法可在大温度范围下应用，在不同的应用场合下，既可在低于Fe一N－O系共折转变
Coat-Nitrocarburizing is a chemical heat treatment process for iron and steel. The process includes the formation of a sand layer on the surface of a workpiece by a gaseous product sublimated and decomposed by a triazing (triazine) polymer reagent in a closed volume. This method can be applied in a large temperature range, in different applications, both below the Fe-N-O system fold change