ABBA Lab

Advanced Biomaterials for Biomedical Applications Lab

Journal

Preliminary Characterization of Glass/Alumina Composite Using Laser Powder Bed Fusion (L-PBF) Additive Manufacturing
Year
2020
Author
Byeong Hoon Bae, Jeong Woo Lee, Jae Min Cha, Il-Won Kim, Hyun-Do Jung*, Chang-Bun Yoon
Publication date
2020/05
Journal
Materials
Vol
13(9)
Page
2156
File
materials-13-02156.pdf (5.4M) 4회 다운로드 DATE : 2020-11-10 11:47:29
Powder bed fusion (PBF) additive manufacturing (AM) is currently used to produce high-efficiency, high-density, and high-performance products for a variety of applications. However, existing AM methods are applicable only to metal materials and not to high-melting-point ceramics. Here, we develop a composite material for PBF AM by adding Al 2 O 3 to a glass material using laser melting. Al 2 O 3 and a black pigment are added to a synthesized glass frit for improving the composite strength and increased laser-light absorption, respectively. Our sample analysis shows that the glass melts to form a composite when the mixture is laser-irradiated. To improve the sintering density, we heat-treat the sample at 750 C to synthesize a high-density glass frit composite. As per our X-ray diffraction (XRD) analysis to confirm the reactivity of the glass frit and Al 2 O 3, we find that no reactions occur between glass and crystalline Al 2 O 3. Moreover, we obtain a high sample density of≥ 95% of the theoretical density. We also evaluate the composite’s mechanical properties as a function of the Al 2 O 3 content. Our approach facilitates the manufacturing of ceramic 3D structures using glass materials through PBF AM and affords the benefits of reduced process cost, improved performance, newer functionalities, and increased value addition.