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Densification of Magnesium Aluminate Spinel Using Manganese and Cobalt Fluoride as Sintering Aids

机译:以锰和氟化钴为烧结助剂的铝镁尖晶石致密化

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摘要

Highly dense magnesium aluminate spinel bodies are usually fabricated using pressure-assisted methods, such as spark plasma sintering (SPS), in the presence of lithium fluoride as a sintering aid. The present work investigates whether the addition of transition metal fluorides promotes the sintering of MgAl O bodies during SPS. At the same time, such fluorides can act as a source of optically active dopants. A commercial MgAl O was mixed with 0.5 wt% of LiF, MnF , and CoF and, afterwards, consolidated using SPS at 1400 °C. Although MnF and CoF promote the densification as effectively as LiF, they cause significant grain growth.
机译:在氟化锂作为烧结助剂的情况下,通常使用压力辅助方法(例如火花等离子体烧结(SPS))来制造高密度铝酸镁尖晶石体。目前的工作调查过渡金属氟化物的添加是否促进SPS期间MgAl O体的烧结。同时,此类氟化物可充当光学活性掺杂剂的来源。将市售的MgAl O与0.5 wt%的LiF,MnF和CoF混合,然后在1400°C下使用SPS固结。尽管MnF和CoF像LiF一样有效地促进了致密化,但它们引起了明显的晶粒长大。

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