The use of intermetallic AlxMgy powder to obtain AlMgB14-based materials

Phase Composition, Structure and Properties of the Spark Plasma Sintered Ceramics Obtained from the Al12Mg17-B-Si Powder Mixtures

“…According to the results obtained on the light element analyzer LECO ONH, the amount of oxygen in the raw boron powder is 1.1 wt%, and in the intermetallic Al 12 Mg 17 powder does not exceed 0.1 wt%. Thus, the presence of oxygen in the structure is due to the contamination of the initial boron powder with boron oxide B 2 O 3 [ 17 , 18 ].…”

“…It is also important to note that in addition to the AlB 12 phase, the Al 0.5 Mg 0.5 B 2 phase is formed in the obtained specimens. In [ 11 , 17 , 23 ], it was found that the Al 0.5 Mg 0.5 B 2 diboride phase is an intermediate phase in the formation of aluminum magnesium boride AlMgB 14 . However, the presence of an inert diluent (silicon) absorbs part of the heat energy and prevents the formation of the AlMgB 14 phase under the selected sintering mode, despite the completion of the specimen consolidation process.…”

On the Structure and Properties of AlMgB14-TiB2 Composites Obtained from SHS Powders by Spark Plasma Sintering

“…To obtain AlMgB 14 -TiB 2 composite mixture, powders of an Al 12 Mg 17 intermetallic alloy (purity 98.8%, average particle size 0.6 μm) [ 7 ], amorphous boron (purity 98.8%, average particle size 0.6 μm), and titanium (purity 99.2%, average particle size 140 μm) were used as the raw precursors. To obtain the main mixture (acceptor), the Al 12 Mg 17 intermetallic alloy and amorphous boron were mixed in an atomic ratio of 2:14.…”

“…First of all, it is a combination of high hardness and low friction coefficient. Since that moment, scientists from different countries have been actively investigating AlMgB 14 materials and composite materials based on them: in particular, methods of fabricating bulk specimens [ 1 , 2 , 3 , 4 ], methods of obtaining coatings [ 5 , 6 ], formation [ 4 , 7 ] and decomposition [ 8 ] mechanisms, tribological characteristics of AlMgB 14 -based materials in dry conditions [ 7 , 9 , 10 ] and in various lubricants [ 11 , 12 ], and mechanical properties [ 1 , 2 , 3 , 4 , 7 , 8 ]. Over the past two decades, many methods have been reported for the production of AlMgB 14 -based materials, but these can be divided into two groups.…”

СОДЕРЖАНИЕ ФАЗ И СТРУКТУРНЫЕ СВОЙСТВА МАТЕРИАЛОВ AlMgB14, ПОЛУЧЕННЫХ МЕТОДОМ САМОРАСПРОСТРАНЯЮЩЕГОСЯ ВЫСОКОТЕМПЕРАТУРНОГО СИНТЕЗА С ИСПОЛЬЗОВАНИЕМ ХИМИЧЕСКОЙ ПЕЧИ

“…Благодаря вышеперечисленным свойствам AlMgB 14 может использоваться в качестве материалов и покрытий для повышения энергоэффективности различных установок за счет снижения износа в узлах трения. В работе [3] В работе исследовались образцы системы AlMgB 14 , полученные методом самораспространяющегося высокотемпературного синтеза порошковой смеси Al 12 Mg 17 -B [3] с использованием химической печи на основе титана и кремния (Ti 5 Si 3 ) толщиной 1, 2 и 3 см в атмосфере аргона. Процесс подготовки исходных материалов и их синтеза детально описан в работе [4].…”