Ceramic components manufacturing by selective laser sintering

2007 ◽  
Vol 254 (4) ◽  
pp. 989-992 ◽  
Author(s):  
Ph. Bertrand ◽  
F. Bayle ◽  
C. Combe ◽  
P. Goeuriot ◽  
I. Smurov
Keyword(s):  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Ceramic Components

Selective Laser Sintering of Zirconia

2000 ◽  
Vol 625 ◽  
Author(s):  
Nicole R. Harlan ◽  
David Bourell ◽  
Seok-Min Park ◽  
Joseph J. Beaman
Keyword(s):  
Selective Laser Sintering ◽  
Base Material ◽  
Laser Sintering ◽  
Average Density ◽  
Mold Material ◽  
Material System ◽  
Green Density ◽  
Stabilized Zirconia ◽  
Ceramic Components ◽  
Shock Resistance

AbstractA combination of Selective Laser Sintering and colloidal infiltration has been used to create partially stabilized zirconia molds for titanium casting. The mold material system was chosen for its low reactivity with molten titanium and thermal shock resistance. The base material, stabilized zirconia mixed with a copolymer binder, was pre-processed before laser sintering into the desired green shape. The average density of the fired parts could be increased to twice that of the green density. Hole sizes as small as 180 m are possible in thin ceramic components.

Slurry deposition by airbrush for selective laser sintering of ceramic components

2009 ◽  
Vol 29 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Anja M. Waetjen ◽  
Dominik A. Polsakiewicz ◽  
Ingo Kuhl ◽  
Rainer Telle ◽  
Horst Fischer
Keyword(s):  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Ceramic Components

scholarly journals Production and Processing of a Spherical Polybutylene Terephthalate Powder for Laser Sintering

2019 ◽  
Vol 9 (7) ◽  
pp. 1308 ◽  
Author(s):  
Rob Kleijnen ◽  
Manfred Schmid ◽  
Konrad Wegener
Keyword(s):  
Mechanical Properties ◽  
Thermal Processing ◽  
Selective Laser Sintering ◽  
Spherical Shape ◽  
Laser Sintering ◽  
Polybutylene Terephthalate ◽  
Powder Production ◽  
Injection Molded ◽  
Continuous Extrusion ◽  
Matrix Powder

This work describes the production of a spherical polybutylene terephthalate (PBT) powder and its processing with selective laser sintering (SLS). The powder was produced via melt emulsification, a continuous extrusion-based process. PBT was melt blended with polyethylene glycol (PEG), creating an emulsion of spherical PBT droplets in a PEG matrix. Powder could be extracted after dissolving the PEG matrix phase in water. The extrusion settings were adjusted to optimize the size and yield of PBT particles. After classification, 79 vol. % of particles fell within a range of 10–100 µm. Owing to its spherical shape, the powder exhibited excellent flowability and packing properties. After powder production, the width of the thermal processing (sintering) window was reduced by 7.6 °C. Processing of the powder on a laser sintering machine was only possible with difficulties. The parts exhibited mechanical properties inferior to injection-molded specimens. The main reason lied in the PBT being prone to thermal degradation and hydrolysis during the powder production process. Melt emulsification in general is a process well suited to produce a large variety of SLS powders with exceptional flowability.

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