Comprehensive research on microwave sintering of the TiN–20 wt.% TiB₂ and TiN–20 wt.% Si₃N₄ composites was conducted. At a constant microwave power of 900 W, the TiN–20 wt.% TiB₂ composite could be effectively consolidated to a residual porosity of 9% at 1370°C and the TiN–20 wt.% Si₃N₄ composite to a residual porosity of 6% at 1407°C. A comparative analysis of the composites consolidated by conventional sintering in a resistance furnace at 50 °C/min to 1550°C revealed that they had residual porosity greater than 25%. The microwave-sintered samples showed dense areas of predominantly spherical shape (D ~ 5 μm) formed by titanium nitride and titanium diboride phases. This zonal segregation of dense areas to form TiN and TiB₂ spherical agglomerates was due to heterogeneous distribution of the electromagnetic field throughout the multimode microwave oven, leading to locally overheated areas within the materials being processed. The structural features of the TiN–20 wt.% TiB₂ and TiN–20 wt.% Si₃N₄ composites were found to influence their mechanical and tribological properties. The measured hardness of the TiN–20 wt.% TiB₂ composite was 19.5 ± 1.1 GPa and that of the TiN–20 wt.% Si₃N₄ composite was 19.8 ± ± 0.8 GPa. Wear resistance tests of the composites in friction against the VK6 hardmetal showed quite high tribological properties: linear wear rates of 12.5 μm/km (TiN–20 wt.% Si₃N₄) and 11.3 μm/km (TiN–20 wt.% TiB₂) and friction coefficients of 0.43 and 0.26, respectively. A comparative analysis of the TiN–20 wt.% TiB₂ and TiN–20 wt.% Si₃N₄ composites consolidated by microwave and conventional sintering allowed the conclusion that a uniform fine-grained structure, which would enhance the mechanical and tribological properties, could be produced by increasing the microwave sintering rate in the 600–1500°C range to 50 °C/min and above and using hybrid microwave heating.

进行了TiN-20 wt。％TiB ₂和TiN-20 wt。％Si ₃ N ₄复合材料的微波烧结的综合研究。在900 W的恒定微波功率下，TiN–20 wt。％TiB ₂复合材料可以有效地固结到1370°C下9％的残余孔隙率和TiN–20 wt。％Si ₃ N _4。复合材料在1407°C时的残余孔隙率为6％。通过在电阻炉中以50°C / min至1550°C的常规烧结方法固结的复合材料的比较分析表明，它们的残余孔隙率大于25％。微波烧结样品显示出由氮化钛和二硼化钛相形成的主要为球形的致密区域（D〜5μm）。密集区域的这种区域隔离形成了TiN和TiB ₂球形团聚体，这是由于整个多模微波炉中电磁场的分布不均，导致了被处理材料内的局部过热区域。TiN–20 wt。％TiB ₂和TiN–20 wt。％Si ₃ N _{4的结构特征}已发现复合材料会影响其机械和摩擦性能。TiN–20 wt。％TiB ₂复合材料的测得硬度为19.5±1.1 GPa，而TiN–20 wt。％Si ₃ N ₄复合材料的测得硬度为19.8±±0.8 GPa。复合材料在与VK6硬质合金的摩擦中的耐磨性测试显示出相当高的摩擦学性能：线性磨损率分别为12.5μm/ km（TiN–20 wt。％Si ₃ N ₄）和11.3μm/ km（TiN–20 wt。％） TiB ₂）和摩擦系数分别为0.43和0.26。TiN–20 wt。％TiB ₂和TiN–20 wt。％Si ₃ N _4的比较分析 通过微波和常规烧结固结的复合材料得出的结论是，通过将600–1500°C范围内的微波烧结速率提高到50°C / min，可以产生均匀的细晶粒结构，从而提高机械性能和摩擦学性能以上，并使用混合微波加热。