Effect of titanium oxide addition on sintering performance of magnesia-rich magnesia-zirconia ceramics
Effect of titanium oxide addition on sintering performance of magnesia-rich magnesia-zirconia ceramics
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二氧化钛添加量对富镁氧化镁陶瓷烧结性能的影响
DOI：
10.1016/j.ceramint.2020.05.304
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发表时间：
2020-10
影响因子：
5.2
通讯作者：
Jingkun Yu
中科院分区：
文献类型：
--
作者：
Endong Jin;Zoukai Yin;Lei Yuan;Tianpeng Wen;Chen Tian;Jingkun Yu
以结晶菱镁矿煅烧后的MgO粉为原料，以TiO 2为添加剂，制备了MgO-ZrO 2陶瓷。将样品与不同质量分数的ZrO 2粉末混合，在1600 °C下烧结2 h。研究了ZrO 2和TiO 2添加量对MgO-ZrO 2陶瓷性能的影响。结果表明，增加ZrO 2的质量分数或添加少量TiO 2均能显著提高MgO-ZrO 2陶瓷的性能。TiO 2的改性效果比ZrO 2更明显。TiO 2的加入促进了ZrO 2和MgO的固溶反应，是提高致密化的主要原因。此外，TiO 2和CaO形成CaTiO 3，而游离SiO 2和MgO形成Mg 2SiO 4。这两种化合物填充了MgO和ZrO 2颗粒之间的孔隙，提高了致密化、压缩强度和抗热震性。
MgO-ZrO2ceramics were prepared using MgO powder calcined with crystal magnesite as starting material and TiO2as an additive. Samples were mixed with different mass fractions of ZrO2powder and sintered at 1600 °C for 2 h. Effects of added amounts of ZrO2and TiO2on the performance of MgO–ZrO2ceramics were investigated. Results showed that increase in mass fraction of added ZrO2or addition of small amount of TiO2significantly promoted performance of MgO–ZrO2ceramics. Moreover, the improvement effect of TiO2was more obvious than that of ZrO2. Addition of TiO2promoted solid solution reaction of ZrO2and MgO, which was the main reason for improved densification. In addition, TiO2and CaO form CaTiO3, whereas free SiO2and MgO form Mg2SiO4. These two compounds filled the pores between MgO and ZrO2grains and improved densification, compressive strength, and thermal shock resistance.
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DOI：
10.3390/ma11060883
发表时间：
2018-05-24
期刊：
Materials (Basel, Switzerland)
影响因子：
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作者：
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DOI：
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2011
期刊：
Procedia Engineering
影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
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