Pressureless sintering behavior and properties of Ag-SnO_2

作     者：Henri Desplats Elodie Brisson Philippe Rogeon Patrick Carré Alexandre Bonhomme 

作者机构：Department of Materials Engineering IRDL FRE CNRS 3744University of South Brittany Schneider Electric-Electropole31 rue Pierre Mendes France 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2019年第38卷第1期

页      面：35-41页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the French National Research Agency REF ANR(No.ANR-09-MAPR-0007-MAPR) 

主　　题：Ag-SnO2 Pressureless sintering Dilatometry Mechanical properties Electrical conductivity 

摘      要：In this study, the results of measurements on pressureless sintering behavior of Ag-SnO_2(88%wt Ag,12%wt SnO_2) pellets were reported. Dilatometric measurements, relative densities, hardness values, rupture transverse strength and electrical conductivities function of sintering temperatures were presented. A constant thermal expansion coefficient was determined, and a threshold temperature of densification(T_d) was exhibited. Sintering kinetics were reported for different temperatures. Hardness values were measured, and no increase in hardness is found under Td. Three-points bending tests were used to determine the transverse rupture strength whose evolution appears importantly well under Td. In the same manner, the increase in initial electrical conductivities begins well under Td. Under the threshold temperature, the relative increase in electrical conductivity is found to be independent of initial density of green compact pellets. This work highlights different evolutions in function of sintering temperature for the electrical conductivity and transverse rupture strength on the one hand, and for the densification and hardness on the other hand.