Microstructure and Mechanical Properties of Ti(C,N)-based Functional Gradient Cermets Nitriding by Microwave Heating
Microstructure and Mechanical Properties of Ti(C,N)-based Functional Gradient Cermets Nitriding by Microwave Heating
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Ti(C,N)基功能梯度金属陶瓷微波加热渗氮的显微组织和力学性能
DOI：
10.1515/htmp-2014-0075
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Xiong Xiao
中科院分区：
文献类型：
--
作者：
Deshun Liu,;Pengnan Li;Yuqiang Chen;Xiong Xiao
摘要利用微波加热氮气与碳氮化钛(Ti(C，N))基金属陶瓷的相互作用，研制出功能梯度金属陶瓷。Ti(C，N)基金属陶瓷在共晶温度以上同时进行致密化和氮化，大大缩短了烧结时间。实验结果表明，金属陶瓷表面形成了一层面心立方(FCC)富集层。同时，在金属陶瓷中发现了一种新的三层芯/边结构，并提出了其形成机理。该功能梯度材料具有优异的综合性能。
Abstract The interaction between nitrogen and titanium carbonitride (Ti(C,N))-based cermets by microwave heating was applied to develop functional gradient cermets. Ti(C,N)-based cermets was densification and nitrided simultaneously above the eutectic temperature, which greatly shortens the sintering time. Experimental results show that a face centered cubic (fcc) rich surface layer was formed at the surface of the cermets. Meanwhile, a new three layers core/rim structure was found in the cermets and its formation mechanism was proposed in this study. The functional gradient material exhibits excellent comprehensive properties.