摘要
首先通过微波烧结制备了孔隙率为5.5%的多孔ZrO_2陶瓷基体,然后采用Mg-Al-Si系玻璃粉浆涂覆与多孔ZrO_2陶瓷基体表面,研究不同玻璃渗透温度对ZrO_2-玻璃复合陶瓷微观结构、抗弯强度和断裂韧性的影响。结果表明:渗透温度对ZrO_2陶瓷基体的物相无影响,仍为基体的四方相ZrO_2。随着渗透温度的增加,ZrO_2-玻璃复合陶瓷的密度、抗弯强度、断裂韧性均整体先增加后降低,均在渗透温度1 300℃达到最大值,分别为5.91±0.035 g/cm^3、565.870 MPa、14.791 MPa·m^(1/2),较多孔ZrO_2陶瓷基体分别提高了2.6%、68%、74%。
In this paper, the porous ZrO2 ceramic substrate was prepared by microwave sintering. Then, Mg-Al-Si glass powder was coated on the surface of porous ZrO2 ceramic substrate. The effects of different glass-infiltrating temperature on the microstructure, flexural strength and fracture toughness of ZrO2-Glass composite were studied. The results show that the phase structure does not change of ZrO2 ceramic matrix with increasing the infiltrating temperature, still is tetragonal phase ZrO2. With increasing the glass-infiltrating temperature, the density, flexural strength and fracture toughness of the ZrOE-glass composite all first increased and then decreased. At 1 300 ℃ the mechanical performance reaches the best, which the density,flexural strength and fracture toughness are 5.91 ± 0.035 g/cm^3 ,568. 870 MPa, 14. 791 MPa · m^1/2 ,respectively,and compared to the porous ZrO2 ceramic matrix increased by 2.6% 68% and 74% ,respectively.
出处
《江西科学》
2017年第2期270-274,共5页
Jiangxi Science
基金
江西省自然科学基金(2010GZC0165)
关键词
氧化锆陶瓷
微波烧结
玻璃渗透
组织
性能
Zirconia ceramic
microwave sintering
glass infihrteding
microstructure
properties
