Solid State Reaction of Ir with SiC and Ir with Y2O3 |
| |
Authors: | Hua Yunfeng Li Zhengxian Du Jihong and Huang Chunliang |
| |
Affiliation: | Northwest Institute for Nonferrous Metal Research,Xi’an 710016, China |
| |
Abstract: | Solid state reactions between Ir and SiC and between Ir and Y2O3 were studied. The thermodynamics and mechanism of solid state reaction were discussed. The results indicate that Ir reacts with SiC at 1000 °C to yield Ir3Si and graphitized carbon. The products of Ir silicide changes from Ir3Si and IrSi at 1200 °C to IrSi at 1400 °C. The solid state reaction between Ir and Y2O3 is thermodynamically favorable above 1800 °C in a reductive carbon atmosphere. The reaction mechanism between Ir and Y2O3 was analyzed based on the Engel correlation between electronic configuration and structures of metals and alloy crystal structure. |
| |
Keywords: | solid state reaction Ir SiC Y2O3 standard enthalpies of formation |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |