The aim of this study was to prepare four different composition of Alumina/Lanthanum Hexaaluminate powder. Four different compositions ranging from 10 to 80 vol % of Lanthanum Hexaaluminate were prepared. To prepare the Alumina-Lanthanum Hexaaluminate ceramic composite, stable aqueous Alumina slurry was needed to prepare. Thus, selection of electrolyte was made after comparing Darvan and tri-ammonium Cytrate. Darvan was chosen as an electrolyte to prepare stable aqueous Alumina slurry. The effect of pH on zeta potential was also studied.ud After preparation of Alumina-Lanthanum Hexaaluminate ceramic composite powder, pellets of approximately 0.7gram for each composition were made by applying 4 Ton pressure for 120 seconds. The pellets were then sintered at 16500C in chamber furnace. The soaking time was kept for 4 hours. Then the bulk density, aparent porosity and strength were compared after calculation of dry weight, soked weight, suspended weight. The results revealed that bulk density increased with increasing vol % of LHA content and aparent porosity decreased with increasing vol% of LHA content. The strength also increased with increasing vol% of Lanthanum Hexaaluminate.ud
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机译：这项研究的目的是制备四种不同的氧化铝/六铝酸镧粉末。制备了四种不同的组成，其范围为六铝酸镧的10至80体积％。为了制备氧化铝-镧六铝酸盐陶瓷复合材料，需要稳定的含水氧化铝浆料来制备。因此，在比较Darvan和柠檬酸三铵之后进行电解质的选择。选择Darvan作为电解质以制备稳定的含水氧化铝浆料。还研究了pH对ζ电势的影响。在制备氧化铝-镧六方铝酸盐陶瓷复合粉末之后，通过施加4吨压力120秒来制备每种组合物约0.7克的粒料。然后将粒料在室内炉中在16500℃下烧结。浸泡时间保持4小时。然后在计算干重，浸入重量，悬浮重量之后比较堆密度，表观孔隙率和强度。结果表明，堆积密度随LHA含量的体积％增加而增加，表观孔隙率随LHA含量的体积％增加而减小。强度也随着六铝酸镧的vol％的增加而增加。 ud
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