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Device for preparing combinatorial libraries in powder metallurgy

Device for preparing combinatorial libraries in powder metallurgy
Device for preparing combinatorial libraries in powder metallurgy
This paper describes a powder-metering, -mixing, and -dispensing mechanism that can be used as a method for producing large numbers of samples for metallurgical evaluation or electrical or mechanical testing from multicomponent metal and cermet powder systems. It is designed to make use of the same commercial powders that are used in powder metallurgy and, therefore, to produce samples that are faithful to the microstructure of finished products. The particle assemblies produced by the device could be consolidated by die pressing, isostatic pressing, laser sintering, or direct melting. The powder metering valve provides both on/off and flow rate control of dry powders in open capillaries using acoustic vibration. The valve is simple and involves no relative movement, avoiding seizure with fine powders. An orchestra of such valves can be arranged on a building platform to prepare multicomponent combinatorial libraries. As with many combinatorial devices, identification and evaluation of sources of mixing error as a function of sample size is mandatory. Such an analysis is presented.
1520-4766
549-555
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2

Yang, Shoufeng and Evans, Julian R.G. (2004) Device for preparing combinatorial libraries in powder metallurgy. Journal of Combinatorial Chemistry, 6 (4), 549-555. (doi:10.1021/cc040026c). (PMID:15244416)

Record type: Article

Abstract

This paper describes a powder-metering, -mixing, and -dispensing mechanism that can be used as a method for producing large numbers of samples for metallurgical evaluation or electrical or mechanical testing from multicomponent metal and cermet powder systems. It is designed to make use of the same commercial powders that are used in powder metallurgy and, therefore, to produce samples that are faithful to the microstructure of finished products. The particle assemblies produced by the device could be consolidated by die pressing, isostatic pressing, laser sintering, or direct melting. The powder metering valve provides both on/off and flow rate control of dry powders in open capillaries using acoustic vibration. The valve is simple and involves no relative movement, avoiding seizure with fine powders. An orchestra of such valves can be arranged on a building platform to prepare multicomponent combinatorial libraries. As with many combinatorial devices, identification and evaluation of sources of mixing error as a function of sample size is mandatory. Such an analysis is presented.

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More information

Published date: July 2004
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 165089
URI: https://eprints.soton.ac.uk/id/eprint/165089
ISSN: 1520-4766
PURE UUID: e47a65e2-1cb1-4fc8-b468-6cd48991e1d0
ORCID for Shoufeng Yang: ORCID iD orcid.org/0000-0002-3888-3211

Catalogue record

Date deposited: 07 Oct 2010 11:36
Last modified: 31 Jul 2019 00:37

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Contributors

Author: Shoufeng Yang ORCID iD
Author: Julian R.G. Evans

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