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Medium-entropy or high-entropy nitride ceramic, preparation method and application
The invention discloses medium-entropy or high-entropy nitride ceramic as well as a preparation method and application thereof. Metal elements and nitrogen elements in the ceramic are formed by combining metallic bonds and weak covalent bonds; the metal elements are any three or more of the following elements: Fe, Co, Ni, Cu, Mn, Zn and Ga; the medium-entropy or high-entropy nitride ceramic is used as a wear-resistant and protective material; the weak covalent bond combined medium-entropy or high-entropy nitride ceramic coating is prepared through deposition on the surface of a substrate through magnetron sputtering, the content of covalent bonds in the coating is regulated and controlled by controlling the power of a sputtering target and the flow of reaction gas, and the phase structure and the mechanical property of the coating are regulated and controlled. The structure of the coating is a single-phase BCC, single-phase FCC or FCC + BCC structure, and weak covalent bonds and metallic bonds are mainly combined in the coating. According to the bonding material, dislocation can slide in the coating, then plastic deformation is generated, the toughness of the bonding material is far higher than that of an existing medium-entropy or high-entropy ceramic coating, and the bonding material has strength and toughness.
本发明公开了一种中熵或高熵氮化物陶瓷、制备方法及应用，陶瓷中金属元素和氮元素以金属键和弱共价键结合形成；金属元素为以下元素中的任意三种及以上：Fe、Co、Ni、Cu、Mn、Zn、Ga；中熵或高熵氮化物陶瓷作为耐磨、防护材料使用；本发明通过磁控溅射在基体表面沉积制备得到弱共价键结合中熵或高熵氮化物陶瓷涂层，通过控制溅射靶功率与反应气体的流量调控涂层中共价键的含量，调控涂层的物相结构和力学性能。涂层的结构为单相BCC、单相FCC或FCC+BCC结构，涂层中以弱共价键和金属键结合为主。这种键合的材料使得位错可以在涂层内部产生滑移，进而产生塑性变形，其韧性远高于现有的中熵或高熵陶瓷涂层，具有既具有强度又具有韧性。
Medium-entropy or high-entropy nitride ceramic, preparation method and application
The invention discloses medium-entropy or high-entropy nitride ceramic as well as a preparation method and application thereof. Metal elements and nitrogen elements in the ceramic are formed by combining metallic bonds and weak covalent bonds; the metal elements are any three or more of the following elements: Fe, Co, Ni, Cu, Mn, Zn and Ga; the medium-entropy or high-entropy nitride ceramic is used as a wear-resistant and protective material; the weak covalent bond combined medium-entropy or high-entropy nitride ceramic coating is prepared through deposition on the surface of a substrate through magnetron sputtering, the content of covalent bonds in the coating is regulated and controlled by controlling the power of a sputtering target and the flow of reaction gas, and the phase structure and the mechanical property of the coating are regulated and controlled. The structure of the coating is a single-phase BCC, single-phase FCC or FCC + BCC structure, and weak covalent bonds and metallic bonds are mainly combined in the coating. According to the bonding material, dislocation can slide in the coating, then plastic deformation is generated, the toughness of the bonding material is far higher than that of an existing medium-entropy or high-entropy ceramic coating, and the bonding material has strength and toughness.
本发明公开了一种中熵或高熵氮化物陶瓷、制备方法及应用，陶瓷中金属元素和氮元素以金属键和弱共价键结合形成；金属元素为以下元素中的任意三种及以上：Fe、Co、Ni、Cu、Mn、Zn、Ga；中熵或高熵氮化物陶瓷作为耐磨、防护材料使用；本发明通过磁控溅射在基体表面沉积制备得到弱共价键结合中熵或高熵氮化物陶瓷涂层，通过控制溅射靶功率与反应气体的流量调控涂层中共价键的含量，调控涂层的物相结构和力学性能。涂层的结构为单相BCC、单相FCC或FCC+BCC结构，涂层中以弱共价键和金属键结合为主。这种键合的材料使得位错可以在涂层内部产生滑移，进而产生塑性变形，其韧性远高于现有的中熵或高熵陶瓷涂层，具有既具有强度又具有韧性。
Medium-entropy or high-entropy nitride ceramic, preparation method and application
一种中熵或高熵氮化物陶瓷、制备方法及应用
LI YANTAO (author) / YU XIANHUI (author) / LENG YUANQIANG (author)
2024-03-29
Patent
Electronic Resource
Chinese
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