Cold sintered LiMgPO4 based composites for low temperature co‐fired ceramic (LTCC) applications

Wang, Dawei
Chen, Jinrong
Wang, Ge
Lu, Zhilun
Sun, Shikuan
Li, Jinglei
Jiang, Juan
Zhou, Di
Song, Kaixin
Reaney, Ian M.

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Publication date

November 2020

DOI

10.1111/jace.17320

Publisher

Wiley

Abstract

Cold sintered, Li2MoO4-based ceramics have recently been touted as candidates for electronic packaging and low temperature co-fired ceramic (LTCC) technology but MoO3 is an expensive and endangered raw material, not suited for large scale commercialization. Here, we present cold sintered temperature-stable composites based on LiMgPO4 (LMP) in which the Mo (and Li) concentration has been reduced, thereby significantly decreasing raw material costs. Optimum compositions, 0.5LMP-0.1CaTiO3-0.4K2MoO4 (LMP-CTO-KMO), achieved 97% density at <300°C and 600 MPa for 60 minutes. Raman spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray mapping confirmed the coexistence of end-members, LMP, CTO, and KMO, with no i...