中文摘要：

采用平均粒径约为10μm的Ca-ZrO2粉和直径为0．2～1mm的Ca-ZrO2空心球，选择适当的比例分数，经叠层模压成型后进行常压烧结，成功制备了具有密度梯度的氧化锆多孔陶瓷，并对构成叠层样品的粉球比为50：50～90：10试样的密度、抗压强度、显微结构、物相等进行了表征。结果表明，对于单配比试样，在相同烧结温度下其密度和抗压强度显著依赖于ZrO2粉和ZrO2空心球的比例分数，ZrO2粉的含量越高，试样的密度和抗压强度越高；其中1700℃烧结的样品，其密度由粉球比为50：50试样的3．18g／cm^3变化到粉球比为90：10试样的3．65g／cm^3，相应地其抗压强度则由49MPa变化到130MPa。

英文摘要：

Porous zirconia ceramics with density gradient was fabricated used calcia stabilized zirconia（Ca-ZrO2） powder （the average particle size, 10 μm ） and zirconia hollow balls （φ（0.2-1） mm）. The density, compressive strength, micrograph and crystal phase of the sintered samples for 50%-90% of Ca-ZrO2 powder content were characterized. For the sintered samples with the content ratio of Ca-ZrO2 powder and Ca-ZrO2 hollow balls, their density and compressive strength are improved with increasing of the content of Ca-ZrO2 powder, in which the density sintered at 1700 ℃ varies from the lowest 3.18 g/cm^3 to the most 3.65 g/cm^3 and the compressive strength changes from 49 MPa to 130.0 MPa.