Colored zirconia ceramic samples were prepared via pressureless sintering with yttria‐stabilized zirconia as a raw material and aluminum chromium slag (ACS) as an additive. Then, the effects of added ACS (0‐15.0 wt%) on the microstructure, phase composition, and mechanical properties of the ceramic were investigated. The addition of ACS changed the apparent color of zirconia ceramics from white to pink, and the color deepened as the ACS content increased. In addition, more pores appeared in the sintered ceramic substrate as the content of ACS increased, and the relative density of samples declined from 97.7% to 91.1% with an increase in ACS content. However, the microhardness and bending strength each reached their maximum values (1887.2 HV and 433.5 MPa, respectively) when the content of ACS was 5.0 wt%. Fracture surface analysis of the samples showed that intergranular fractures were the main features of sintered samples with no added ACS, whereas numerous transgranular fractures occurred in sintered samples to which ACS had been added. The XRD results revealed that the prepared mainly composite ceramics were composed of t‐ZrO₂, m‐ZrO₂, and chromium‐corundum, and the content of the t‐ZrO₂ gradually increased as the ACS content increased.

中文翻译：

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添加铝铬渣对有色氧化锆陶瓷结构和力学性能的影响

通过以氧化钇稳定的氧化锆为原料和铝铬渣（ACS）为添加剂的无压烧结制备了彩色氧化锆陶瓷样品。然后研究了添加ACS（0-15.0 wt％）对陶瓷的微观结构，相组成和力学性能的影响。ACS的添加将氧化锆陶瓷的表观颜色从白色变为粉红色，并且随着ACS含量的增加，颜色加深。此外，随着ACS含量的增加，烧结陶瓷基板中出现了更多的孔，并且随着ACS含量的增加，样品的相对密度从97.7％下降至91.1％。然而，当ACS的含量为5.0重量％时，显微硬度和弯曲强度均达到最大值（分别为1887.2HV和433.5MPa）。样品的断口表面分析表明，晶间断裂是未添加ACS的烧结样品的主要特征，而在已添加ACS的烧结样品中发生了许多经晶断裂。XRD结果表明，所制备的主要复合陶瓷是由t-ZrO组成的。₂，m-ZrO ₂和铬刚玉，并且随着ACS含量的增加，t-ZrO ₂的含量逐渐增加。