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PRESSURELESS SINTERING OF TITANIUM DIBORIDE POWDERS

机译:二硼化钛粉末的无压烧结

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Key parameters that affect the densification of pure TiB{sub}2 were being determined. The pure TiB{sub}2 powders used in the determination of the key parameters were obtained from commercial sources. Taguchi methods were used to study the significant factors in achieving high green density from pressed TiB{sub}2 pellets. The results of the study showed that pressing pressure and powder dryness account for ~66% of the factors that effect TiB{sub}2 green density. A confirmation study confirmed that the optimal configuration of the factors studied was pressing with a dual action configuration at 20,000 psi with powder that was not dried. Pressed samples were fired between 1800 - 2100℃ using a reducing atmosphere. Preliminary results indicated that densification of these materials may begin at 1800℃. Samples that were fired at 1800℃ showed evidence of early densification stages while samples fired at 2100℃ showed varying degrees of densification.
机译:确定了影响纯TiB {sub} 2致密化的关键参数。用于确定关键参数的纯TiB {sub} 2粉末是从商业渠道获得的。 Taguchi方法用于研究压制的TiB {sub} 2颗粒获得高绿色密度的重要因素。研究结果表明,压制压力和粉末干燥度约占影响TiB {sub} 2生坯密度的因素的66%。一项确认研究证实,所研究因素的最佳配置是在未干燥的粉末下以20,000 psi的双重作用配置加压。在还原气氛下,将压制样品在1800-2100℃之间烧制。初步结果表明,这些材料的致密化可能始于1800℃。在1800℃下燃烧的样品显示出早期致密化的证据,而在2100℃下燃烧的样品显示出不同程度的致密化。

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