Bulk synthesis of amorphous and nano-crystalline materials by spray forming

Srivastava, V C and Ellendt, N and Meyer, C and Uhlenwinkel, V (2014) Bulk synthesis of amorphous and nano-crystalline materials by spray forming. Materialwissenschaft und Werkstofftechnik, 45(8) (IF-0.505). pp. 744-757.

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Bulk amorphous and nano-crystalline metallic materials have been observed to possess excellent mechanical and physical properties. The conventional process routes, to synthesize such materials, are restricted by their ability to achieve rapid solidification, which limits the dimensions of the materials produced. In the last 10-12 years, spray forming has been employed to avoid these limitations by using its capability of layer by layer deposition of undercooled droplets. The current literature indicates that the opportunities provided by this process can be effectively utilized to produce bulk materials in a single step. In this paper, an attempt has been made to bring out the developments in the synthesis of bulk amorphous and/or nano-crystalline materials by spray forming. The effect of process parameters, droplet size distribution in the atomized spray, the thermal conditions of droplets prior to deposition and the deposition surface conditions have been discussed. It has been demonstrate that a layer by layer deposition of undercooled droplets of glass forming alloys on a relatively cold deposition surface is the suitable condition to achieve bulk amorphous/nano-crystalline materials.

Item Type:Article
Official URL/DOI:http://www.nmlindia.org/7120
Uncontrolled Keywords:spray forming; amorphous; nano-crystalline; undercooling; alloys
Divisions:Material Science and Technology
ID Code:7120
Deposited By:Sahu A K
Deposited On:11 Nov 2014 12:28
Last Modified:04 May 2016 16:58
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