以喷雾造粒ZrO2粉料为研究对象，通过对粉料的压力 -密度曲线及坯体的SEM显微结构分析，发现喷雾造粒粉料的粒度分布对坯体密度的影响较小；颗粒强度的大小是获得均匀的坯体结构的关键，颗粒的强度与其大小及环境湿度有关，因此颗粒适当的增塑及去除大颗粒均有利于坯体显微结构的改善．
The green compact properties of ZrO2 spray-dried powders were studied by means of pressure-density compaction curves of the powder and SEM photographs . The results show found that the granule size distribution of the spray-dried powder has a smaller effect on the green compact density . Granule yield strength, which depends on the dimension of granules and the relative humidity in the environment, is a critical factor influencing the uniformity of green compact microstructures . Therefore, plasticizing granules and eliminating larger granules can improve the microstructure of the green compact .
参考文献
| [1] | 卢旭晨,徐廷献,等.硅酸盐学报,1997,25(3)：364-367. |
| [2] | Dynys F W, Halloran J W . J. Am. Ceram. Soc., 1983, 66 (9): 655-659. |
| [3] | Messing G L, Markhoff C J, Mccoy L G . Am. Ceram. Soc. Bull., 1982, 61 (8): 857-860. |
| [4] | 李懋强,迟卓男.硅酸盐学报,1990,18(10)：406-411. |
| [5] | Lukasiewicz S J, Reed J S . Am. Ceram. Soc. Bull., 1978, 57 (9): 798-801. |
| [6] | Lange F F, Metcalf M. J. Am. Ceram. Soc., 1983, 66 (6): 398-406. |
| [7] | Dynys F W, Halloran J W . J. Am. Ceram. Soc., 1984, 67 (9): 596-601. |
| [8] | Lange F F. J. Am. Ceram. Soc., 1984, 67 (2): 83-87. |
| [9] | Rhodes W H. J. Am. Ceram. Soc., 1981, 64 (1): 19-22. |
| [10] | Dimilia R A, Reed J S . Am. Ceram. Soc. Bull., 1983, 62 (4): 484-488. |
| [11] | Toyoshima K. In: Polyvinyl Alcohol-Properties and Applications. New York: 1973. 339. |
| [12] | Nies C W, Messing G L. J. Am. Ceram. Soc., 1984, 67 (4): 301-304. |
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