Preparation and characterization of new sealing glasses based on Li_(2)O-NiO-P_(2)O_(5) system

作     者：Hany ABO-MOSALLAM Ebrahim A.MAHDY Hany ABO-MOSALLAM;Ebrahim A.MAHDY

作者机构：Glass Research DepartmentNational Research CentreEl-Buhouth StDokkiCairo 12622Egypt 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2022年第29卷第5期

页      面：1437-1446页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：glass sealing nickel oxide thermal expansion dissolution rate 

摘      要：A series of glass are synthesized via a melt quenching technique based on the Li_(2)O-Ni O-P_(2)O_(5) *** concentration of nickel oxide varies from 5%to 15%in molar *** pattern verifies the amorphous nature of prepared glass samples with 5%,and 10%nickel oxide in molar *** Li_(3)P and Ni_(2)P_(4)O_(12)phases are precipitated with a high nickel content up to 15%in molar *** nickel is substituted for lithium,a systematic increase in glass transition temperature(T_(g))and glass softening temperatures(T_(s))is *** is greatly related to the increased structure,coherence in the glass *** investigation showed that Ni_(2+) spectra are present in both octahedral and tetrahedral *** properties such as glass density((2.38±0.1)-(2.46±0.1)g/cm^(3)),and molar volume((42.28±0.1)-(39.15±0.1)cm^(3)/mol)are *** NiO/Li_(2)O replacements led to a decrease in the dissolution rate of the resultant amorphous materials from 1.53×10^(-5)to 3.20×10^(-6)g/(cm^(2)·min).Thermal expansion coefficients CTE of the glasses are diverse from 157×10^(-7) to 96×10^(-7)℃^(-1) over the temperature range of 25-250℃.The prepared glasses are expected to be useful as a low-temperature sealing material.