As a high-performance cermet, TiCN possesses extensive potential for application in various fields, including coating materials, ceramic products, and electronic materials. Here, the effects of temperature and pressure on the physical properties of the TiCN cermet have been investigated by high-pressure techniques and first-principles calculations. Experimentally, the phase, microstructure, mechanical properties, and electrical conductivity of bulk TiCN ceramics were analyzed. In high-pressure sintering, the sintering temperature rhythmically regulated the porosity and grain size within the ceramics. The TiCN prepared at 5.5 GPa/1200 °C has a Vickers hardness of ∼23.81 GPa, a Young’s modulus of 445.24 GPa, and an electrical conductivity of ∼(20.4 ± 0.55) × 10⁵ S/m. Moreover, the responses of the mechanical and electronic properties of TiCN to pressure were evaluated by first-principles, which matched the experimental results. The research findings have revealed that the pressure effects work not only on the microstructure and mechanical properties but also on the atoms and electrons. The study integrates both theoretical and experimental approaches to enhance our comprehension of the microstructure and physical properties of TiCN ceramics, insights that are instrumental in broadening the application scope of TiCN-based ceramic materials.

中文翻译：

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温度和压力环境对氮化碳钛陶瓷机械和电子性能影响的研究


作为一种高性能金属陶瓷，TiCN 在涂层材料、陶瓷产品和电子材料等各个领域具有广泛的应用潜力。在这里，温度和压力对 TiCN 金属陶瓷物理性能的影响通过高压技术和第一性原理计算进行了研究。通过实验分析了块状 TiCN 陶瓷的相、微观结构、力学性能和电导率。在高压烧结中，烧结温度有节奏地调节陶瓷内的孔隙率和晶粒尺寸。在 5.5 GPa/1200 °C 下制备的 TiCN 具有 ∼23.81 GPa 的维氏硬度、445.24 GPa 的杨氏模量和 ∼（20.4 ± 0.55） × 10⁵ S/m 的电导率。此外，通过第一性原理评估了 TiCN 的机械和电子性能对压力的响应，这与实验结果相匹配。研究结果显示，压力效应不仅影响微观结构和机械性能，还影响原子和电子。该研究结合了理论和实验方法，以增强我们对 TiCN 陶瓷微观结构和物理特性的理解，这些见解有助于拓宽 TiCN 基陶瓷材料的应用范围。