The influence of carbon on the microstructure and wear resistance of alumina
The influence of carbon on the microstructure and wear resistance of alumina
复制标题
碳对氧化铝微观结构和耐磨性的影响
DOI：
10.1111/jace.17832
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发表时间：
2021
影响因子：
3.9
通讯作者：
W. Kaplan
中科院分区：
文献类型：
--
作者：
R. Marder;Priyadarshini Ghosh;I. Reimanis;W. Kaplan
研究了碳掺杂对多晶氧化铝晶粒生长和耐磨性的影响。通过在富碳环境（石墨炉在流动He下）中烧结和/或通过来自在绿色体固结过程中使用的有机粘合剂的残余碳将碳引入氧化铝中。将样品在1600°C下烧结2小时。用碳掺杂氧化铝导致烧结后晶粒尺寸减小，这与高浓度碳（~3重量%）的溶质阻力和石墨颗粒阻力相关。通过测量使用金刚石切片锯在规定时间内切割的样品面积，作为粒度和碳含量的函数，对材料对磨料磨损的响应进行量化。烧结氧化铝与碳导致在耐磨性的显着增加，作为一个结果的晶粒尺寸减小。
The influence of carbon as a dopant on grain growth and wear resistance of polycrystalline alumina was evaluated. Carbon was introduced into alumina by sintering in a carbon‐rich environment (graphite furnace under flowing He), and/or by residual carbon from organic binders used during the green body consolidation process. Samples were sintered at 1600°C for 2 h. Doping alumina with carbon resulted in a reduced grain size after sintering, correlated to solute‐drag, and graphite particle‐drag for high concentrations of carbon (~3 wt.%). The material response to abrasive wear was quantified by measuring the sample area cut for a defined time using a diamond wafering saw, as a function of grain size and carbon content. Sintering alumina with carbon resulted in a significant increase in wear resistance, as a result of the reduced grain size.
DOI：
10.1111/jace.17502
发表时间：
2021-01
期刊：
Journal of the American Ceramic Society. American Ceramic Society
影响因子：
--
作者：
Lawn BR;Borrero-Lopez O;Huang H;Zhang Y
通讯作者：
Zhang Y