氧化铝基耐火材料的高温耐磨性.pdfVIP

32 8 Vo.l 32 No. 8 2010 8 Journal ofUniversity of Science and Technology Beijing ug. 2010 1, 2) 2) 2) 1) 彭西高 王晓利 吴学真 孙加林 1) , 100083 2) , 471039 , . : , , ; , , . , , , , . , , . , , , ; , . ; ; ; + TQ 1751 2 brasion resistance of alum ina based refractory products at elevated tempera tures 1, 2) 2) 2) 1) PENG X igao , WANG X iaoli , W U X uezhen , S UN J ialin 1) School ofM aterials Science an Eng ineering, University of Science an Technology Beijing, Beijing 100083, China 2) Sinosteel Luoyang Institute ofR efractories Research Co. Lt . , Luoyang 471039, China BSTR CT Abrasion resistances of five k in s of alum ina base refractory pro ucts at elevate tem peraturesw ere eterm ine using a new evelope h ightem perature abrasion facility. The results show that the w ear volum e of the refractory pro ucts uring elastic e form ation has a little change w ith tem perature rising, but in the plastic eform ation range it rops sharp ly. The refractory pro uctsw ith a h igh har ness m ineral as the m ain crystal phase have a better abrasion resistance. S intering egree has am ore obvious effect on the abrasion resistance. For the refractory pro uctsw ith the sam em ain m ineral phase, the enser the sintering egree, the better the abra sion resistance is. W hen a low m elting point liqui phase form s in the refractory pro ucts at elevate tem peratures, thew ear volume e creases, an the liqu i phase has am ore effect on the abrasion resistance than the har ness of them ineral phase. Thew ear volum e has a close relationw ith hot mo u lus of rupture ( HMOR). The h igher the HMOR, the sm aller the w ear volum e is uring elastic eform a tion. The HMOR an w ear volume ecrease rap i ly