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3D 프린팅법으로 제조한 티타늄 시편의 물성 평가

Other Titles
 Evaluation of Physical Properties of Titanium Specimen Fabricated by 3D Printing Technique 
Authors
 오윤정  ;  석수황  ;  이상혁  ;  김광만  ;  권재성  ;  임범순 
Citation
 Korean Journal of Dental Materials (대한치과재료학회지), Vol.43(1) : 29-41, 2016 
Journal Title
Korean Journal of Dental Materials(대한치과재료학회지)
ISSN
 2384-4434 
Issue Date
2016
Keywords
3D Printing , Titanium Alloy , SLS , MicroCT , Elastic Modulus , Fatigue Limit
Abstract
The interest of the additive manufacturing technology, commonly called 3D printing, is rapidly increasing. Selective laser sintering (SLS) is the one of the method for 3D printing that has potential to produce metallic prostheses in dentistry. The purpose of this study was to evaluate physical properties of titanium specimen fabricated by SLS for dental implant system. Specimens were fabricated from Ti6Al4V alloy powder with median particle size (D50) of 34 μm. The SLS 3D printing was carried out using YAG laser with wavelength of 1075 nm with power of 190 W, and thickness of each layer was 30 μm. Machined specimens with sandblasting treatment were used as control group. Density, porosity, yield strength (30o compression), elastic modulus and fatigue limit were estimated. Density measurement and microCT analysis gave valuable informations about impurity inclusions and manufacturing defects. Yield strength and elastic modulus of 3D printing dense specimen showed similar value with the machined specimens. However, fatigue limit of 3D printing dense specimens was significantly lower than the machined specimen. 3D printing porous specimen showed lower yield strength and elastic modulus than the 3D printing dense specimens. Before 3D printing porous dental prosthesis application in clinic, fatigue limit should be evaluated carefully.
Files in This Item:
T201605306.pdf Download
DOI
10.14815/kjdm.2016.43.1.29
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/152778
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