CAJ | 학술논문

利用SiO2、单质Si、Al2O3易溶于氢氟酸、硝酸，而SiC不溶于氢氟酸、硝酸的特性，用氢氟酸、硝酸溶样，过滤的不熔物连同滤纸在瓷坩埚中灰化、灼烧，用重量法测定铁沟料中的SiC量。于滤液中加高氯酸蒸发冒烟除去残余氟离子对Al2O3分析的影响，用强碱沉淀分离、氟盐置换、EDTA滴定法分析Al2O3量。测定结果准确可靠，RSD：SiC＜0.134%，Al2O3＜1.438%。
이용SiO2、단질Si、Al2O3역용우경불산、초산，이SiC불용우경불산、초산적특성，용경불산、초산용양，과려적불용물련동려지재자감과중회화、작소，용중량법측정철구료중적SiC량。우려액중가고록산증발모연제거잔여불리자대Al2O3분석적영향，용강감침정분리、불염치환、EDTA적정법분석Al2O3량。측정결과준학가고，RSD：SiC＜0.134%，Al2O3＜1.438%。
Utilizing the characteristic that SiO2, elemental Si, Al2O3 are soluble in hydrofluoric acid and nitric acid but SiC is insoluble in them, the simple was dissolved in hydrofluoric acid and nitric. The ashing and Filtering non melt matter together with the filter paper was incinerated and burned. The SiC content in lander material was determined by gravimetric method. Perchloric acid was added into the filtrate. By evaporating smoking, the residual fluoride ion effecting the measurement of the Al2O3 was removed. The Al2O3 content was analyzed by strong alkali separation, villiaumite replacement and EDTA titration method. The determination result is accurate and reliable and the relative standard deviations:SiC<0.134%and Al2O3<1.438%.