To gain the effect of post-heat-tre

为了获得后处理对密度发展的影响，如图2所示，测量了刚烧结和后热处理的ZnO陶瓷的密度。获得了约97.5％的高相对密度。 CSP之后的样品。在Ar气氛中于300°C进行后热处理后，观察到密度显着提高，达到99.1％的高值。通过进一步提高后热处理温度，密度缓慢增加，并在600°C时达到最高，接近99.6％的密度。此后，随着后热处理温度的升高，它会稍微降低。密度变化<br>清楚地表明，冷烧结过程对于初始密度至关重要，<br>适当的后热处理将有助于进一步提高密度。在Ar气氛和500℃的空气中进行后热处理后，获得了接近的相对密度（图2），类似于在XRD图中观察到的现象，表明最终的致密化过程与后热处理气氛无关。 。

To gain the effect of post-heat-treatment on the density development, density of the as-cold-sintered and post-heat-treated ZnO ceramics was measured, as demonstrated in Fig. 2. High relative density of ~97.5% is obtained for the samples after CSP. An obvious enhancement in density is observed after post-heat-treating at 300 °C in Ar atmosphere, reaching a high value of 99.1%. The density increases slowly by further increasing the post-heat-treating temperature and reaches a maximum with a nearly full density of 99.6% at 600 °C. After that, it decreases slightly with increasing post-heat-treating temperature. The density evolution <br>unambiguously indicates that the cold sintering process is crucial to the initial density, <br>and an appropriate post-heat-treatment will help to further enhance the density. A close relative density is obtained after post-heat-treated in Ar atmosphere and air at 500℃(Fig.2), similar to the phenomenon observed in XRD patterns, indicating the final densification process is independent on the post-heat-treating atmosphere.

为了获得后热处理对密度发展的影响，测量了经冷烧结和后热处理的氧化锌陶瓷的密度，如图2所示。CSP后样品的相对密度高达97.5%。在Ar气氛中300℃热处理后，密度明显提高，达到99.1%。随着热处理后温度的进一步升高，密度缓慢增加，600℃时达到最大值，接近全密度99.6%，之后随着热处理后温度的升高，密度略有降低。密度演化<br>明确指出冷烧结过程对初始密度至关重要，<br>适当的热处理有助于进一步提高密度。在500℃的Ar气氛和空气中进行后热处理后，获得了接近的相对密度（图2），与XRD图谱中观察到的现象相似，表明最终的致密化过程与后热处理气氛无关。<br>