·284· 北京科技大学学报 1996年No.3 国外耐火材料.1988，(1)：70 4 Mistler R E.Coble R J.Grain'-Boundary Diffusion and Boundary Widths in Metals and Ceramics.J Appl Phys,1974.454:1507 Influences of ZrO,on Mechanical Properties in Magnesia Spinel Sun Jialin Hong Yanruo Department of Physical Chemistry,USTB,Beijing 100083.PRC ABSTRACT Adding three kinds of oxides with ZrO,in the magnesia spinel system,the composition of phase and the microstructure are changed.The strength of middle temperature and the thermal stability are increased at middle temperature. KEY WORDS refractory,magnesia spinel,additions.mechanical properties 以以以以州以以以以以以然以以以以以以以从以以以以以以以以X (上接275页) Application of ESZ Principle in On-Line Measurements of Non-Metallic Inclusions Shen Yaxi Wang Shaochun'Liu Xinhua 1)College of Automation and Information Engineering.USTB.Beijing 100083.PRC 2)Department of Metallurgy,USTB ABSTRACT A new techniques for on-line measurements of inclusions,ESZ principle, is given.Based on experimemts under low temperature and high temperature,ESZ prin- ciple is proved to be a practical technique for on-line measurements of non-conductive inclusions in conductive liquid. KEYWORDS non-metallic inclusions,refining (metallurgy),on-line measurements. electrical sensing zone284 北 京 科 技 大 学 学 报 1 99 6 年 N O . 3 国 外耐火材料 , 198 4 M is 士r R E A P P I hP 够 , 助 ble , ( l ) : R J D l汗旧 io n a dn oB nU da ry Widt hS in M e at js a n d 〔七“ u n 此 . J 19 74 , 4匀4 ) : 150 7 I nfl ue n ces o f Z r O Z o n M e ch a in ca l P r o P e rt ies i n M a g nes i a S P ine l uS n iJ a li n H 。月 9 aY n ru o 众P a r r m e n t o f P h y s i e a l C h e m l s t r y , U S T B , B e ij i n g 10 0 0 8 3 , P R C A B S r f R A 〔几 , dA d i n g t h er k i n ds o f o x id es iw t h 2 10 : i n t h e nar g n 巴i a s P i n e l s ys t e m , th e co m P o s it i o n o f P h a s e a dn t h e mj cor s t ur ct u er a er ch a n g de . hT e s t enr g t h o f im d d l e t e ln P e ar t u er a n d t h e t l l e mr a l s at b il iyt a er i n c 代习 S de a t 而d d l e t e n 1 Pe ar t u er . K E Y W O R E 6 er afr cot yr , anr g n es i a s P i n e l , a d d it i o ns , 1l l ec l l a n i以1 P or P e rt ies ( 上 接 2 7 5 页 ) A P P l ica t i o n o f ES Z P r inc iP l e i n O n 一 L ine M e a s u er me n st o f N On 一 M e at l li c I n cl us i o ns hS en aY x i , ) 不f “ n g hS a励 u n , ) L i u iX n h u a Z l ) C o l l e g e o f A u t o m a t i o n a n d I n fo r m a t i o n E n g i n e e r i n g , U S T B , B e ij i n g 10 0 0 8 3 , P R C 2 ) D e P a r t rn e n t o f M e t a ll u r g y , U S T B A B S T R A C T A n e w t e c h n iq u e s fo r o n 一 li n e m e a s u r e m e n t s o f i n e l u s i o n s , E S Z P r i n c iP l e , 1 5 g i v e n . B a s e d o n e x P e r im e m t s u n d e r l o w t e m P e r a t u r e a n d h ig h t e m P e r a t u r e , E S Z P r i n - e iP l e 1 5 P r o v e d t o b e a P r a e t i e a l t e e h n i q u e fo r o n 一 li n e m e a s u r e m e n st o f n o n 一 co n d u e t i v e i n e l u s i o n s i n co n d u e t i v e liq u id . K E Y W O R D S n o n 一 m e t a lli e i n c l u s i o n s , r e if n i n g (me t a ll u r g y ) , o n 一 li n e m e a s u r e m e n t s , e l e e t r ica l s e n s i n g z o n e