Laser Direct Deposited Transparent Magnesium Aluminate Spinel Ceramics

Abstract

This paper investigates the use of Laser Direct Deposition to fabricate transparent magnesium aluminate spinel (MAS) ceramics. Dense MAS ceramic samples are created from a homogeneous mixture of alumina and magnesia precursors without a need of lengthy pre-processing procedures normally required by traditional sintering techniques. The printed samples are verified to be a single MAS phase through X-ray diffraction peak analysis. Cracking and residual porosity are the key issues affecting the optical/infrared transmission of the printed parts. With optimized processing conditions, the parts shift from being translucent to transparent, indicating the potential of the proposed method in direct printing transparent ceramic parts.

Department(s)

Mechanical and Aerospace Engineering

Research Center/Lab(s)

Center for Research in Energy and Environment (CREE)

Second Research Center/Lab

Intelligent Systems Center

Keywords and Phrases

Additive manufacturing; Laser direct deposition; Laser engineered net shaping; Magnesium aluminate spinel; Transparent ceramics

International Standard Serial Number (ISSN)

2213-8463

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 Society of Manufacturing Engineers (SME), All rights reserved.

Publication Date

01 Apr 2020

Link to Full Text

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