Synthesis of composite based on Ti2AlC with added nanographite via wet ball milling followed by spark plasma sinteringстатья
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Дата последнего поиска статьи во внешних источниках: 17 ноября 2021 г.
Аннотация:A two-stage wet ball milling procedure followed by SPS at 900 ◦C was applied to fabricate the composite based on Ti2AlC MAX phase with the incorporated nanographite. In addition to the MAX phase (71 vol-%) and nanographite (5 vol-%), the synthesized composite contains TiC (7 vol-%) and TiAl (4 vol-%) and Ti6Al16Fe7 G phase (13 vol-%) which is formed under the interaction of the starting powders with iron going from the material of the milling equipment under milling. The MAX phase and G phase form areas of a layered structure with a layer thickness of about 100–200 nm. The density of the composite is 3.95 g cm 3 which is 95% of the calculated, and microhardness being ~8.7 GPa. The proposed method for the synthesis of the composite provides high wear resistance to dry sliding friction against a steel ball and the friction coefficient kfr of ~0.35, and wear beingpractically absent.