Spark plasma sintering of amorphous-crystalline laminated composites

作者：Harimkar Sandip P^*; Borkar Tushar; Singh Ashish

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2011, 528(3): 1901-1905.

DOI：10.1016/j.msea.2010.10.107

• Bulk amorphous alloys
• Composites
• Sintering
• Phase transformation
• X-ray diffraction

In this rapid communication, a novel approach involving pulsed electrodeposition (PED) and spark plasma sintering (SPS) of Fe-B-Si amorphous ribbons is presented for the processing of amorphous-crystalline laminated composites. The PED allowed the deposition of nanocrystalline Ni or Cu layers (thickness: <3 mu m) on the Fe-B-Si amorphous ribbons (thickness: <25 mu m). The coated ribbons were subsequently stacked and SPS sintered under the influence of pulsed direct current and uniaxial pressure. The SPS sintered amorphous ribbons (uncoated) and amorphous-Ni laminates exhibited partial crystallization of the ribbons and poor lamellar bonding in the composites. With the similar SPS sintering parameters (temperature: 450 degrees C; pressure: 350 MPa; sintering time: 20 min), the amorphous-Ni-Cu laminates were sintered to full densification without undesirable crystallization of the amorphous ribbons.

• 出版日期2011-1-25