کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438477 | 1398184 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Limiting current oxygen sensor based on La0.8Sr0.2Ga0.8Mg0.2O3âδ as both dense diffusion barrier and solid electrolyte
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
La0.8Sr0.2Ga0.8Mg0.2O3âδ (LSGM) was synthesized by a high temperature solid-state reaction. The crystal structure, relative density and electrical conductivity were measured with XRD, Archimedes method, and Van Der Pauw DC four-probe method. A limiting current oxygen sensor based on LSGM as both solid electrolyte and dense diffusion barrier was prepared by a Pt paste bonding method. The results show that LSGM has pure perovskite structure (cubic symmetry with space group of Pm-3m (No.221)), high density (relative density is 97.6%) and electrical conductivity (0.18 Sâcmâ1 at 1073 K). The sensor works optimally over temperature range of 973â1123 K and oxygen concentration of 1.92%â21%. The operating voltage ranges from 0.67 to 0.98 V. The limiting current is in proportion to oxygen concentration. The sensor has the highest sensitivity at 1123 K and low measurement error of less than 4%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6329-6332
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6329-6332
نویسندگان
Xiang Gao, Tao Liu, Jingkun Yu, Lin Li,