Si-Ni Combined SiC Bricks

Description

Si-Ni Combined SiC Bricks refers to a refractory brick made of SiC as the main component and fired with industrial SiC.

Characteristics

High strength at room temperature and high temperature
High thermal conductivity
Small coefficient of linear expansion
Good thermal shock resistance
Excellent high temperature wear resistance
Strong chemical resistance

Specification

Item	Clay-bound SiC	Clay-bound SiC	Mullite bonded SiC	SiO2-bound SiC	SiO2 combined with SiC
					1	2	3
Bulk density /g – cm-3	2.4-2.6	Approximate 2.5	–	2.70-2.75	2.66	2.78	2.82
Porosity (%)	15-25	14~18	14~16	7-8	13.3	5.8	6
Normal temperature compressive strength/MPa	–	Approximate 100		>130	120	150	>130
Coefficient of linear expansion ℃-1(20 to 1000 ℃)	–	4.6×10 -6	–	<4.9×10 -6	4.8×10 -6	4.8×10 -6	(4.5-4.9)×10 -6
Thermal conductivity W – ( m – k ) -1(1000 ℃)	–	11	–	15.7-16.9	15.7 (1200 ℃)	16.2 (1200 ℃)	16.8-17.4
ω(SiC) (%)	50~90	>85	>70	≥90	88	89.8	≥90
ω(SiO2) (%)	–	–	–	–	9.5	8.9	–
ω(Al2O3) (%)	–	–	–	–	1.5	0.5	–
ω(Fe2O3) (%)	–	–	–	–	0.7	0.3	–

Application

Si-Ni Combined SiC Brick is widely used in industrial fields such as iron and steel, nonferrous metallurgy, ceramics, chemistry, electric power and aerospace.