Buscar en
Ciência & Tecnologia dos Materiais
Toda la web
Inicio Ciência & Tecnologia dos Materiais Optimization of MWCNT – Metal Matrix Composites feedstocks
Journal Information
Vol. 29. Issue 1.
Materiais 2015
Pages e87-e91 (January - April 2017)
Share
Share
Download PDF
More article options
Vol. 29. Issue 1.
Materiais 2015
Pages e87-e91 (January - April 2017)
DOI: 10.1016/j.ctmat.2016.07.010
Full text access
Optimization of MWCNT – Metal Matrix Composites feedstocks
Visits
...
T.J. Ferreira
Corresponding author
tferreira@student.dem.uc.pt

Corresponding author.
, M.T. Vieira
CEMUC (Group of Nanomaterials and Micromanufacturing), Department of Mechanical Engineering, University of Coimbra 3030-788 Coimbra, Portugal
Article information
Abstract
Bibliography
Download PDF
Statistics
Abstract

Micro powder injection moulding-μPIM is a powder injection moulding-PIM variant for microparts/devices. This study is about the optimization and respective production of nanocomposites feedstocks suitable to μPIM process. The optimization of MWCNT content in metal matrix composites-MMC feedstock were performed using torque rheometry until achieve homogeneous feedstocks with suitable flowability to μPIM process (60:40 vol.%). During debinding step, it is likely loss of MWCNT, forcing a new stage where physical connection between powders and MWCNTs should be established. Mechanical milling seems the suitable technique to be adopted to overcome this major problem. In preliminary route, the binder M1 (with or without SA addition) is mixed with copper or 316L steel powder. Therefore, two different routes were selected: route 1 – the addition of different MWCNT contents is done during the preparation of feedstock; route 2 – a mechanical milling of metallic powders with MWCNT precedes the conventional production of feedstocks, but with SA addition to improve the nanoreinforced content. The first route impairing its processability by μPIM. The other route revealed to induce homogeneity mixing and torque values suitable to be used as feedstock for μPIM. The route 2 allowed to manufacture with high quality microparts up to 2% of MWCNT addition.

Keywords:
MMC
micro PIM
Cu
SS316L
MWCNT
milling
plastograph mixing
Full text is only aviable in PDF
References
[1]
L. Liu, N.H. Loh, B.Y. Tay, S.B. Tor.
Powder Technol., 206 (2011), pp. 246
[2]
C. Quinard, T. Barrière, J.C. Gelin.
Int. J. Mater. Form., 25 (2008), pp. 8
[3]
B.Y. Tay, N.H. Loh, S.B. Tor, F.L. Ng, G. Fu, X.H. Lu.
Powder Technol., 188 (2009), pp. 179
[4]
C. Quinard, T. Barrière, J.C. Gelin.
Powder Technol., 190 (2009), pp. 123
[5]
J. Meng, N.H. Loh, G. Fu, S.B. Tor, B.Y. Tay.
J. Alloys Compd., 496 (2010), pp. 293
[6]
A.S. Muhsan, F. Ahmad, N.M. Mohamed, P.S.M.M. Yusoff, M.R. Raza.
Nanosci. Nanotechnol. Lett., 2 (2014),
[7]
R.M. Novais, F. Simon, M.C. Paiva, J.A. Covas.
Composites.
Part A, 43 (2012), pp. 2189
[8]
S.M. Uddin, T. Mahmud, C. Wolf, C. Glanz, I. Kolaric, C. Volkmer, H. Holler, U. Wienecke, S. Roth, H.J. Fecht.
Compos. Sci. Technol., 70 (2010), pp. 2253
[9]
V.T. Pham, H.T. Bui, B.T. Tran, V.T. Nguyen, D.Q. Le, X.T. Than, V.C. Nguyen, D.P. Doan, N.M. Phan.
Nanosci. Nanotechnol., 2 (2011),
[10]
L. Shuquan, Y. Tang, Z. Yong, Z. Jie.
Mater. Sci. Forum., 496 (2009), pp. 79
[11]
F.M. Barreiros, M.T. Vieira, J.M. Castanho.
Met. Powder Rep., 64 (2009), pp. 18
Copyright © 2017. Portuguese Society of Materials (SPM)
Article options
Tools
es en pt

¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?

Você é um profissional de saúde habilitado a prescrever ou dispensar medicamentos

es en pt
Política de cookies Cookies policy Política de cookies
Utilizamos cookies propias y de terceros para mejorar nuestros servicios y mostrarle publicidad relacionada con sus preferencias mediante el análisis de sus hábitos de navegación. Si continua navegando, consideramos que acepta su uso. Puede cambiar la configuración u obtener más información aquí. To improve our services and products, we use "cookies" (own or third parties authorized) to show advertising related to client preferences through the analyses of navigation customer behavior. Continuing navigation will be considered as acceptance of this use. You can change the settings or obtain more information by clicking here. Utilizamos cookies próprios e de terceiros para melhorar nossos serviços e mostrar publicidade relacionada às suas preferências, analisando seus hábitos de navegação. Se continuar a navegar, consideramos que aceita o seu uso. Você pode alterar a configuração ou obter mais informações aqui.