AI_4C_3 Hydration Thermochemical Analysis for Burned Carbon-containing Refractories with Al  

作　　者：YANG Ding’ao, YU Zhiming and FAN Liuwu( Sanmenxia Polytechnic College, Sanmenxia, Henan 472000, China ) 

出　　处：《China's Refractories》2003年第1期19-22,共4页中国耐火材料（英文版）

摘　　要： In this paper, X-ray diffractogram analysis and SEM observation of Al$ C$ formed at high temperature from carbon-containing refractories ivith Al have been carried out. Aluminum added to carbon-containing refractories reacts with C（s） to form Al^ C^（s） gradually during heating from 600 ’C to 1200^0 . It is considered that the interlocked structure of Al^ C-$ plate crystals promotes the outstanding increase of hot modulus of rupture of carbon-containing refractories with Al. The HMOR of carbon-containing refractories added with Al additive from 0 to 5wt% increases by 2.8 times being from 6.5MPa to 18.2MPa. After a thermochemical calculation for hydration reaction processes ofAl^C^ and H^O （g）, the equilibrium partial pressure chart ofH^O （g） in H^O-A^C^-Al^ OH)} system vs various temperatures has been attained . The H2 0 （g） partial pressure in the air needed for the Al^ C3 hydration reaction is no more than 10;18 atm at the temperature below 120t . It is considered that the burned carbon-containing re

关 键 词：Aluminium carbide HYDRATION Thermo-chemical analysis Carbon-containing refractory Aluminium 

分 类 号：TG115[金属学及工艺—物理冶金]