Temperature measurements during selective laser sintering of titanium powder

Selective laser sintering (SLS) is being developed for dental applications. This study aimed to investigate the properties of Ti-6Al-4V and pure titanium specimens fabricated using the SLS process and compare them with casting specimens. Besides, the effect of the building direction on the properties of the SLS specimens was also investigated. Specimens were prepared by SLS using Ti-6Al-4V powder or pure titanium powder. Casting specimens were also prepared using Ti-6Al-4V alloys and pure titanium. The mechanical properties (tensile strength and elongation), physical properties (surface roughness, contact angle, and Vickers hardness); corrosion resistors (color difference and corrosion), and surface properties (chemical composition and surface observation) were examined. Both Ti-6Al-4V and pure titanium specimens produced using the SLS process had comparable or superior properties compared with casting specimens. In comparing the building directions, specimens fabricated horizontally to the printing platform showed the greatest tensile strength, and the surface roughness scanned in the horizontal direction to the platform showed the smallest. However, there was no significant effect on other properties. Thus, the SLS process with Ti-6Al-4V powder and pure titanium powder has great performance for the fabrication of dental prosthesis, and there is a possibility for it to take the place of conventional methods.

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Development of Manufacturing Technique for Titanium Powder Modeling by Indirect Selective Laser Sintering and Magnesium Infiltration

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet.76.515 ◽

2012 ◽

Vol 76 (8) ◽

pp. 515-520 ◽

Cited By ~ 1

Author(s):

Atsushi Yamaguchi ◽

Kohji Gotoh ◽

Tomoki Tomita ◽

Shinji Fukumoto

Keyword(s):

Titanium Powder ◽

Selective Laser Sintering ◽

Laser Sintering ◽

Manufacturing Technique

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Development of Selective Laser Sintering for Titanium Powder-2nd Report

Journal of the Japan Society of Powder and Powder Metallurgy ◽

10.2497/jjspm.54.707 ◽

2007 ◽

Vol 54 (10) ◽

pp. 707-712 ◽

Cited By ~ 3

Author(s):

Hideshi Miura ◽

Yu Nagata ◽

Hideki Ishibashi ◽

Makoto Uemura ◽

Masaaki Otsu

Keyword(s):

Titanium Powder ◽

Selective Laser Sintering ◽

Laser Sintering

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Establishment of Laser Sintering Technique for Titanium Powder

Materials Science Forum ◽

10.4028/www.scientific.net/msf.534-536.465 ◽

2007 ◽

Vol 534-536 ◽

pp. 465-468 ◽

Cited By ~ 4

Author(s):

Hideshi Miura ◽

Hiroyuki Maeda ◽

Makoto Uemura ◽

Teruie Takemasu ◽

Masaaki Otsu

Keyword(s):

Tensile Strength ◽

Mechanical Strength ◽

Surface Texture ◽

Titanium Powder ◽

Adhesive Bonding ◽

Bending Strength ◽

Selective Laser Sintering ◽

Laser Sintering ◽

Maximum Tensile Strength

This paper investigates the characteristic of single-layered and multi-layered compacts made by selective laser sintering using titanium powder. The surface texture and tensile strength were investigated by using single-layered compacts. There were few defects in surface of specimen laser sintered in vacuum, and the roughness was smoother than that of the specimen laser sintered in argon. Maximum tensile strength of single-layered compact laser sintered in vacuum was about 200MPa. The shrinkage and mechanical strength were investigated by using multi-layered compacts. There was a unique tendency in the shrinkage of multi-layered compacts, which the density was around 75% and the adhesive bonding was not observed between layers, resulted in 70MPa of maximum bending strength and 50MPa of maximum tensile strength.

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