耐火材料
耐火材料
내화재료
REFRACTORIES
2014年
2期
119-122
,共4页
孙丽%魏军从%涂军波%吉秀梅
孫麗%魏軍從%塗軍波%吉秀梅
손려%위군종%도군파%길수매
Al2O3-C材料%铝粉%二氧化钛%物相%显微结构
Al2O3-C材料%鋁粉%二氧化鈦%物相%顯微結構
Al2O3-C재료%려분%이양화태%물상%현미결구
alumina-carbon material%aluminum powder%titanium dioxide%phase%microstructure
为了研究TiO2对含Al的Al2 O3-C材料的物相和显微结构的影响,按石墨、铝粉、二氧化钛粉的质量分数分别为20%、40%、40%配料,以酚醛树脂为结合剂,制成C-Al-TiO2试样,分别在800、1000、1200、1400和1600℃保温3 h埋炭热处理后,进行XRD和SEM分析。结果表明:800℃埋炭热处理后试样中有少量Al4 C3和AlN生成,TiO2未参与反应;1000℃热处理后,试样中纤维状的Al4 C3和AlN生成量增加,同时生成粒状的Al2 O3、Al4 O4 C、Al2 OC和TiC;1200℃热处理后,Al2 O3和TiC增加,Al4 C3和AlN纤维发育粗化;1400℃热处理后,纤维状的Al4 C3和AlN减少,生成的Al2 O3和TiC增多;1600℃热处理后,试样中Al4 C3大量减少,AlN基本消失,颗粒状的Al2 O3和TiC则增多,由Al4 C3或AlN氧化生成的部分Al2 O3呈无定形态。
為瞭研究TiO2對含Al的Al2 O3-C材料的物相和顯微結構的影響,按石墨、鋁粉、二氧化鈦粉的質量分數分彆為20%、40%、40%配料,以酚醛樹脂為結閤劑,製成C-Al-TiO2試樣,分彆在800、1000、1200、1400和1600℃保溫3 h埋炭熱處理後,進行XRD和SEM分析。結果錶明:800℃埋炭熱處理後試樣中有少量Al4 C3和AlN生成,TiO2未參與反應;1000℃熱處理後,試樣中纖維狀的Al4 C3和AlN生成量增加,同時生成粒狀的Al2 O3、Al4 O4 C、Al2 OC和TiC;1200℃熱處理後,Al2 O3和TiC增加,Al4 C3和AlN纖維髮育粗化;1400℃熱處理後,纖維狀的Al4 C3和AlN減少,生成的Al2 O3和TiC增多;1600℃熱處理後,試樣中Al4 C3大量減少,AlN基本消失,顆粒狀的Al2 O3和TiC則增多,由Al4 C3或AlN氧化生成的部分Al2 O3呈無定形態。
위료연구TiO2대함Al적Al2 O3-C재료적물상화현미결구적영향,안석묵、려분、이양화태분적질량분수분별위20%、40%、40%배료,이분철수지위결합제,제성C-Al-TiO2시양,분별재800、1000、1200、1400화1600℃보온3 h매탄열처리후,진행XRD화SEM분석。결과표명:800℃매탄열처리후시양중유소량Al4 C3화AlN생성,TiO2미삼여반응;1000℃열처리후,시양중섬유상적Al4 C3화AlN생성량증가,동시생성립상적Al2 O3、Al4 O4 C、Al2 OC화TiC;1200℃열처리후,Al2 O3화TiC증가,Al4 C3화AlN섬유발육조화;1400℃열처리후,섬유상적Al4 C3화AlN감소,생성적Al2 O3화TiC증다;1600℃열처리후,시양중Al4 C3대량감소,AlN기본소실,과립상적Al2 O3화TiC칙증다,유Al4 C3혹AlN양화생성적부분Al2 O3정무정형태。
In order to study the effect of TiO2 on the phase and microstructure of Al2O3-C material containing Al,the C-Al-TiO2 specimens were prepared using graphite (40 mass%),aluminum powder(40 mass%), titanium dioxide (20 mass%)as starting materials and phenolic resin as binder.The specimens were car-bon embedded fired at 800,1 000,1 200,1 400 and 1 600 ℃ for 3 h,respectively.XRD and SEM were con-ducted to analyze the phase composition and microstructure.The results show that after firing at 800 ℃small amounts of Al4C3 and AlN form and TiO2 does not react;after firing at 1 000 ℃,fibrous Al4C3 and AlN increase,and granular Al2O3,Al4O4C,Al2OC and TiC form;after firing at 1 200 ℃,Al2O3 and TiC increase, Al4C3 and AlN fibers develop and thicken;after firing at 1 400 ℃,fibrous Al4C3 and AlN decrease,Al2O3 and TiC increase;after firing at 1 600 ℃,Al4C3 largely decreases,AlN basically disappears,granular Al2O3 and TiC increase;Al2O3 generated by the oxidation of Al4C3 or AlN exist in amorphous state.