Zygmuntowicz Justyna, Konopka Katarzyna, Krasnowski Marek, Piotrkiewicz Paulina, Bolek Jan, Wachowski Marcin, Żurowski Radosław, Szafran Mikołaj
Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland.
Faculty of Mechanical Engineering, Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland.
Materials (Basel). 2022 Apr 16;15(8):2920. doi: 10.3390/ma15082920.
This work aimed to characterize AlO matrix composites fabricated by the slip casting method using NiAl-AlO composite powder as the initial powder. The composite powder, consisting of NiAl + 30 wt.% AlO, was obtained by mechanical alloying of AlO, Al, and Ni powders. The composite powder was added to the AlO powder to prepare the final powder for the slip casting method. The stained composite samples presented high density. EDX and XRD analyses showed that the sintering process of the samples in an air atmosphere caused the formation of the NiAlO spinel phase. Finally, the phase composition of the composites changed from the initial phases of AlO and NiAl to AlO, Ni, and NiAlO. However, in the area of Ni, fine AlO particles remaining from the initial composite powder were visible. It can be concluded that after slip casting, after starting with AlO and the composite powder (NiAl-AlO) and upon sintering in air, ceramic matrix composites with Ni and NiAlO phases, complex structures, high-quality sintered samples, and favorable mechanical properties were obtained.
这项工作旨在表征通过注浆成型法制备的AlO基复合材料，该方法使用NiAl-AlO复合粉末作为初始粉末。由AlO、Al和Ni粉末通过机械合金化获得的复合粉末，其组成为NiAl + 30 wt.% AlO。将该复合粉末添加到AlO粉末中，以制备用于注浆成型法的最终粉末。染色后的复合样品呈现出高密度。能谱分析（EDX）和X射线衍射分析（XRD）表明，样品在空气气氛中的烧结过程导致了NiAlO尖晶石相的形成。最终，复合材料的相组成从最初的AlO和NiAl相转变为AlO、Ni和NiAlO相。然而，在Ni区域，可以看到初始复合粉末中残留的细小AlO颗粒。可以得出结论，在注浆成型后，从AlO和复合粉末（NiAl-AlO）开始，在空气中烧结后，获得了具有Ni和NiAlO相、结构复杂、烧结样品质量高且机械性能良好的陶瓷基复合材料。
