Effects of debinding parameters on powder injection molded Ti-6Al-4V/HA composite parts

E. S. Thian; N. H. Loh; K. A. Khor; S. B. Tor

doi:10.1163/156855201750537901

Effects of debinding parameters on powder injection molded Ti-6Al-4V/HA composite parts

E. S. Thian, N. H. Loh^*, K. A. Khor, S. B. Tor

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

Titanium alloy-hydroxyapatite (Ti-6Al-4V/HA) composite powders produced by a ceramic slurry were mixed with a multi-component binder system in the powder injection molding process. The binder system comprises mainly of natural wax, fatty acid wax, stearic acid, poly-oxialkyen-ether and olefin-hydrocarbons. After molding, the binder system was removed by conventional thermal debinding. The effects of heating rate and gas flow rate on the quality of the debound part in terms of defects, mass of binder removed and residual carbon level were discussed. A slow heating rate (20°C/h) at the beginning stage of the debinding step and a higher gas flow rate (250 cm³/min) were required for the production of defect-free parts with minimal carbon level.

Original language	English
Pages (from-to)	361-370
Number of pages	10
Journal	Advanced Powder Technology
Volume	12
Issue number	3
DOIs	https://doi.org/10.1163/156855201750537901
Publication status	Published - Jan 1 2001
Externally published	Yes

ASJC Scopus Subject Areas

General Chemical Engineering
Mechanics of Materials

Keywords

Ceramic slurry
Composites
Powder injection molding
Thermal debinding
Titanium alloy-hydroxyapatite

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10.1163/156855201750537901

Cite this

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title = "Effects of debinding parameters on powder injection molded Ti-6Al-4V/HA composite parts",

abstract = "Titanium alloy-hydroxyapatite (Ti-6Al-4V/HA) composite powders produced by a ceramic slurry were mixed with a multi-component binder system in the powder injection molding process. The binder system comprises mainly of natural wax, fatty acid wax, stearic acid, poly-oxialkyen-ether and olefin-hydrocarbons. After molding, the binder system was removed by conventional thermal debinding. The effects of heating rate and gas flow rate on the quality of the debound part in terms of defects, mass of binder removed and residual carbon level were discussed. A slow heating rate (20°C/h) at the beginning stage of the debinding step and a higher gas flow rate (250 cm3/min) were required for the production of defect-free parts with minimal carbon level.",

keywords = "Ceramic slurry, Composites, Powder injection molding, Thermal debinding, Titanium alloy-hydroxyapatite",

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AU - Thian, E. S.

AU - Loh, N. H.

AU - Khor, K. A.

AU - Tor, S. B.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Titanium alloy-hydroxyapatite (Ti-6Al-4V/HA) composite powders produced by a ceramic slurry were mixed with a multi-component binder system in the powder injection molding process. The binder system comprises mainly of natural wax, fatty acid wax, stearic acid, poly-oxialkyen-ether and olefin-hydrocarbons. After molding, the binder system was removed by conventional thermal debinding. The effects of heating rate and gas flow rate on the quality of the debound part in terms of defects, mass of binder removed and residual carbon level were discussed. A slow heating rate (20°C/h) at the beginning stage of the debinding step and a higher gas flow rate (250 cm3/min) were required for the production of defect-free parts with minimal carbon level.

AB - Titanium alloy-hydroxyapatite (Ti-6Al-4V/HA) composite powders produced by a ceramic slurry were mixed with a multi-component binder system in the powder injection molding process. The binder system comprises mainly of natural wax, fatty acid wax, stearic acid, poly-oxialkyen-ether and olefin-hydrocarbons. After molding, the binder system was removed by conventional thermal debinding. The effects of heating rate and gas flow rate on the quality of the debound part in terms of defects, mass of binder removed and residual carbon level were discussed. A slow heating rate (20°C/h) at the beginning stage of the debinding step and a higher gas flow rate (250 cm3/min) were required for the production of defect-free parts with minimal carbon level.

KW - Ceramic slurry

KW - Composites

KW - Powder injection molding

KW - Thermal debinding

KW - Titanium alloy-hydroxyapatite

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Effects of debinding parameters on powder injection molded Ti-6Al-4V/HA composite parts

Abstract

ASJC Scopus Subject Areas

Keywords

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