Minimization of water absorption and pyroplastic deformation of wollastonite-containing alumina-strengthened porcelain
Minimization of water absorption and pyroplastic deformation of wollastonite-containing alumina-strengthened porcelain
复制标题
含硅灰石的氧化铝强化瓷的吸水率和热塑变形最小化
DOI：
10.1080/21870764.2021.1996865
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发表时间：
2021
影响因子：
2.3
通讯作者：
Shiwa Yuzo
中科院分区：
文献类型：
--
作者：
Hao Dong;Akatsu Takashi;Kamochi Nobuaki;Shiwa Yuzo
在一定的氧化铝和硅灰石含量范围内，研究了氧化铝强化瓷的致密化和热塑性变形。氧化铝的加入和钙长石的结晶不仅阻止了液相烧结，这对陶瓷在烧成过程中的致密化起着重要作用，而且抑制了高温烧成时的热塑性变形。致密化的防止以及热塑性变形的抑制基本上由烧制时液相量的变化来描述。结果表明，在相对较宽的烧成温度范围内，添加30%（质量分数）氧化铝和<10%（质量分数）硅灰石的陶瓷在吸水率和热塑性变形之间达到了最佳状态。这项研究可作为指导，以实现最小的吸水率和高温塑性变形的氧化铝强化瓷烧制温度从1290至1380°C。
The densification and pyroplastic deformation of alumina-strengthened porcelain were examined within a range of alumina and wollastonite contents. Both the alumina addition and anorthite crystallization not only prevent the liquid-phase sintering, which plays an important role in the densification of the porcelain during firing, but also suppress the pyroplastic deformation at high firing temperatures. The prevention of densification as well as the suppression of pyroplastic deformation is basically described by the change in the amount of liquid phase at firing. As a result, optimization between small water absorption and small pyroplastic deformation was found out in the relatively wide firing temperature range for porcelain with 30 mass% alumina addition and <10 mass% wollastonite addition. This study serves as a guide to achieve minimal water absorption and pyroplastic deformation in alumina-strengthened porcelain fired at temperatures from 1290 to 1380°C.