采用粉体表面包碳技术和两步烧结方法制备出具有良好力学性能的细晶3Y-TZP材料,研究了在无压烧结和两步烧结条件下,碳含量对碳包3Y-TZP材料烧结行为及力学性能的影响.结果表明:对于包裹少量碳的3Y-TZP,与未包碳的试样相比,采用两步烧结不但能提高材料的密度还能细化晶粒;结构致密和ZrO2相变增韧使材料具有较高的维氏硬度和断裂韧性.在碳含量为1.5%时,3Y-TZP材料的维氏硬度和断裂韧性达最大值,碳含量进一步提高使材料中的气孔和缺陷增多,导致材料的性能下降.
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