Research Progress on Preparation Technology of Ultrafine/Nano Titanium Carbonitride Powders AITranslate

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Chinese Library Classification Number:TG148[一般工业技术—材料科学与工程]

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Ti(C,N)-based cermets have become ideal substitutes for traditional WC-based cermets owing to their abundant resources,low cost,and excellent physicochemical properties.Nanometer Ti(C,N)-based cermets exhibit significant advantages in cutting processing,advanced ceramics,hard coatings,and other fields due to grain refinement and further improved hardness and toughness.Preparing nano-Ti(C,N)pre-cursor powders with controllable grain size and favorable dispersibility is an effective strategy to enhance the performance of cermets.This paper summarizes the synthesis technologies and recent advances in ultra-fineano Ti(C,N)powders worldwide,and provides an in-depth analysis of the reaction mechanisms,process characteristics,and product properties of each method.Although carbothermal reduction and nitri-dation is the dominant technique for industrial production,it still suffers from drawbacks such as high en-ergy consumption and uneven particle size distribution.Other methods also face challenges including grain agglo-meration and broad particle size distribution.In the future,efforts should focus on developing preparation processes with high efficiency and economic viability,achieving precise control over the grain size of Ti(C,N)solid-solution powders,and effectively alleviating agglomeration,thereby laying a solid foundation for the widespread promotion and in-depth application of Ti(C,N)-based cermets in industrial field.