Boron nitride nanotube-magnesium alloy composites and manufacturing methods thereof
AssigneeThe Florida International University Board of Trustees
InventorsArvind Agarwal, Pranjal Nautiyal, Benjamin Peter Boesl
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Abstract
Boron nitride nanotube (BNNT)-magnesium (Mg) alloy composites and methods of fabricating the same are provided. The BNNT-Mg alloy composites can have a sandwich structure and can be fabricated by high-pressure spark plasma sintering. A mat of BNNTs can be sputter-coated with Mg, and then sandwiched between Mg alloy particles, followed by a sintering step. The BNNTs can include a hexagonal boron nitride phase.
Claims19
A boron nitride nanotube (BNNT)-magnesium (Mg) alloy composite, comprising:
- a first layer of an Mg alloy, the Mg alloy comprising Mg and a first metal;
- a second layer of the Mg alloy;
- a plurality of BNNTs sandwiched between the first layer and the second layer;
- and
- a nano-phase of magnesium nitride (Mg3N2) and a nano-phase of a nitride of the first metal between the Mg alloy and the BNNTs,
- the BNNTs having an aspect ratio of at least 3,000, and
- the Mg alloy comprising about 96 wt % Mg.
A boron nitride nanotube (BNNT)-magnesium (Mg) alloy composite, comprising:
- a first layer of an Mg alloy, the Mg alloy comprising Mg and a first metal;
- a second layer of the Mg alloy;
- a plurality of BNNTs sandwiched between the first layer and the second layer;
- and
- a nano-phase of magnesium nitride (Mg3N2) and a nano-phase of a nitride of the first metal between the Mg alloy and the BNNTs,
- the BNNTs having an aspect ratio of at least 3,000,
- the layers of the Mg alloy comprising powder of the Mg alloy,
- the first metal being aluminum and the Mg alloy further comprising zinc (Zn),
- the Mg alloy being AZ31,
- the BNNT-Mg alloy composite comprising the BNNTs in a range of from 0.5 wt % to 5 wt %,
- the composite comprising a hexagonal boron nitride phase in the BNNTs, and
- the BNNTs having a diameter in a range of from 5 nm to 15 nm and a length of at least 50 μm.
Dependencies are inferred from the claim text.