Year: 2025
Type: article
Abstract: NiMn2O4 thermosensitive ceramics using Bi2O3 as a low-temperature ablating aid were prepared by laser melting deposition. Analyzing the structural, morphological, and electrical properties of the ceramics revealed important roles of Bi2O3. The room-temperature resistance decreased gradually with the increasing of the Bi2O3 content, the thermal constant of the ceramics varied from 2870.1 to 3853.2 K, and the activation energy varied from 0.2473 to 0.3320 eV. Furthermore, the alleviation of the aging issue was attributed to the grain growth and the densification of the ceramics due to the addition of Bi2O3 and the corresponding cationic redistribution. As a result, an optimized resistance drifting (∆R/R = 5.72%) of the ceramic was obtained with the addition of Bi2O3.
Source: Materials
DOI: 10.3390/ma18112571
Authors: Wei Ren, Xianhai Liu, Shujian Ding, Xiang Weng, Guanghui Liu, Weili Wang, Yanhan Yang
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W4410960555