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WC-based composite powder containing high-entropy carbonitride ceramic phase and preparation method of WC-based composite powder
The invention provides WC-based composite powder containing a high-entropy carbonitride ceramic phase and a preparation method of the WC-based composite powder. The composite powder is composed of a WC phase, the high-entropy carbonitride ceramic phase and/or a metal phase. The preparation method of the WC-based composite powder comprises the steps that metal oxide powder and a carbon source serve as raw materials and are mixed and dried, and the WC-based composite powder is prepared through a one-step in-situ carbon thermal reduction nitridation reaction synthesis method. A high-entropy carbonitride ceramic phase is introduced into WC-based powder through a one-step in-situ reaction synthesis method, and on the basis of improving element distribution uniformity, multiple reinforcing and toughening mechanisms such as the high-entropy strengthening and toughening effect, the phase boundary and grain boundary in-situ pre-strengthening effect and the multi-component synergistic strengthening and toughening effect of the high-entropy carbonitride ceramic phase are fully exerted; therefore, the application of the WC-based composite powder in the fields of hard alloy, hard-surface materials, wear-resistant and corrosion-resistant coatings and the like is expanded. The preparation method is low in production cost, high in flexibility of component adjustability and beneficial to demand-oriented industrial production.
本发明提供了一种含高熵碳氮化物陶瓷相的WC基复合粉末及其制备方法，所述复合粉末由WC相、高熵碳氮化物陶瓷相和/或金属相组成。所述WC基复合粉末制备方法是以金属氧化物粉末和碳源为原料，混合、干燥，经一步原位碳热还原氮化反应合成法制得。本发明通过一步原位反应合成法将高熵碳氮化物陶瓷相引入WC基粉末中，在提升元素分布均匀性的基础上，充分发挥高熵碳氮化物陶瓷相的高熵强韧化效应、相界和晶界原位预强化效应、多组元协同强韧化效应等多重增强增韧机制，从而拓展WC基复合粉末在硬质合金、硬面材料和耐磨耐腐蚀涂层等领域的应用。本发明生产成本低，成分可调的灵活性高，利于需求导向的工业化生产。
WC-based composite powder containing high-entropy carbonitride ceramic phase and preparation method of WC-based composite powder
The invention provides WC-based composite powder containing a high-entropy carbonitride ceramic phase and a preparation method of the WC-based composite powder. The composite powder is composed of a WC phase, the high-entropy carbonitride ceramic phase and/or a metal phase. The preparation method of the WC-based composite powder comprises the steps that metal oxide powder and a carbon source serve as raw materials and are mixed and dried, and the WC-based composite powder is prepared through a one-step in-situ carbon thermal reduction nitridation reaction synthesis method. A high-entropy carbonitride ceramic phase is introduced into WC-based powder through a one-step in-situ reaction synthesis method, and on the basis of improving element distribution uniformity, multiple reinforcing and toughening mechanisms such as the high-entropy strengthening and toughening effect, the phase boundary and grain boundary in-situ pre-strengthening effect and the multi-component synergistic strengthening and toughening effect of the high-entropy carbonitride ceramic phase are fully exerted; therefore, the application of the WC-based composite powder in the fields of hard alloy, hard-surface materials, wear-resistant and corrosion-resistant coatings and the like is expanded. The preparation method is low in production cost, high in flexibility of component adjustability and beneficial to demand-oriented industrial production.
本发明提供了一种含高熵碳氮化物陶瓷相的WC基复合粉末及其制备方法，所述复合粉末由WC相、高熵碳氮化物陶瓷相和/或金属相组成。所述WC基复合粉末制备方法是以金属氧化物粉末和碳源为原料，混合、干燥，经一步原位碳热还原氮化反应合成法制得。本发明通过一步原位反应合成法将高熵碳氮化物陶瓷相引入WC基粉末中，在提升元素分布均匀性的基础上，充分发挥高熵碳氮化物陶瓷相的高熵强韧化效应、相界和晶界原位预强化效应、多组元协同强韧化效应等多重增强增韧机制，从而拓展WC基复合粉末在硬质合金、硬面材料和耐磨耐腐蚀涂层等领域的应用。本发明生产成本低，成分可调的灵活性高，利于需求导向的工业化生产。
WC-based composite powder containing high-entropy carbonitride ceramic phase and preparation method of WC-based composite powder
一种含高熵碳氮化物陶瓷相的WC基复合粉末及其制备方法
MA SHIQING (Autor:in) / LIU YANG (Autor:in) / HU LIANHAI (Autor:in) / YANG LUHAO (Autor:in) / LI SHANGXIN (Autor:in) / SANG DELI (Autor:in) / WANG TIANYU (Autor:in) / LI BOCHAO (Autor:in)
14.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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