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玻璃相
    THE DISTRIBUTION OF B_2O_3 IN FUSED CAST AZS REFRACTORIES AND EFFECT OF B_2O_3 ON VISCOSITY OF GLASS PHASE AT HIGH TEMPERATURE
    B_2O_3在熔铸AZS材料中的分布及其对材料玻璃相高温粘度的影响
    On the glass phase in the melting AZS products
    熔铸AZS制品中玻璃相研究之思考
    The results show that the longest crack initiation life is 6100 cycles for the alumina ceramics sintered at 1450℃,in which the structure is composed of 30% glass phase and 70% crystal phase.
    结果表明,1450℃烧成的试样的疲劳裂纹萌生寿命最高,达到6100周,此时体系内玻璃相含量约为30%,晶相含量约为70%。 其中玻璃相含量的高低是决定氧化铝陶瓷疲劳特性的主要因素。
    The different were interpreted by superplastic forming mechanism of silicon nitride ceramics. The existence of glass phase can be also proved in the grain boundary during superplastic deformation.
    而高温断口上却几乎不存在这样的晶粒,这种不同可以用氮化硅陶瓷材料的超塑性变形机理来解释,也可以证明超塑性变形过程中晶界玻璃相的存在。
    The influence of oxidizing degree on exudation temperature of glass phase of FCAZS refractories
    FCAZS制品氧化程序对玻璃相析出温度的影响
    The results indicate that the surface oxidation layer is constituted of cristobalite and a glass phase containig SiO2 with impurities such as A12O3 and CaO.
    结果表明,Si_3N_4陶瓷材料表面的氧化层,是由方石英相和含有Al_2O_3、CaO等杂质的SiO_2玻璃相所组成。
    The results indicate that the surface oxidation laver is constituted of cristobalite、ZrSiO_4 and a glass phase containing SiO_2 with impurities such as Al_2O_3 and CaO,The con-tents of these impurities increase with increasing oxidation time.
    结果表明,Si_3N_4-Al_2O_3-ZrO_2系陶瓷材料表面氧化层是由方石英相、ZrSiO_4相和含有Al_2O_3、CaO等的SiO_2玻璃相所组成,其中SiO_2玻璃相中Al_2O_3、CaO等的含量,随着氧化时间的增加而逐渐增加。
    The results indicate that the surface oxidation laver is constituted of cristobalite、ZrSiO_4 and a glass phase containing SiO_2 with impurities such as Al_2O_3 and CaO,The con-tents of these impurities increase with increasing oxidation time.
    结果表明,Si_3N_4-Al_2O_3-ZrO_2系陶瓷材料表面氧化层是由方石英相、ZrSiO_4相和含有Al_2O_3、CaO等的SiO_2玻璃相所组成,其中SiO_2玻璃相中Al_2O_3、CaO等的含量,随着氧化时间的增加而逐渐增加。
    The results show that the starting temperature of solid state reaction of low alkali glass is higher than that ofsoda-lime glass but the apperarance temperature of glass phase of low alkali glass approaches to that of soda-lime glass.
    结果表明低碱玻璃固相反应开始温度较高于钠钙玻璃,但玻璃相出现的温度接近于钠钙玻璃。
    The composition of glass phase in the grain boundary was varied in the course of oxidizing treatment, glass phase reacted with the surface composition of AlN to form the crossing structure of fibrous 2H δ Sialon and SiC whisker.
    氧化处理改变了粒界玻璃相的相组成,玻璃相与AlN颗粒发生作用,生成AlN多形体2HδSialon相,形成对材料有益的空间交错的结构。
    It is also found that 60%~70%(wt) SiO 2 content introduced by raw materials will form glass phase.
    研究发现 ,配料中引入的SiO2 成分约有 60 %~ 70 %进入玻璃相
    The results indicate that,while (30~40)% SiO 2 in the system is formed to forsterite(M 2S),the remaindering SiO 2 composition will get into glass phase,and the compositions of glass phase are very close to that of monticellite (CMS).
    结果表明 :系统中占 (3 0~ 40 ) %的 Si O2 成分与 Mg O反应形成镁橄榄石相 (M2 S) ,余下的 Si O2 成分将进入玻璃相 ,且玻璃相的组成与钙镁橄榄石的理论组成大致相当。
    The glass phase containing Li formed from the reaction between Li2O and A12O3 below 1 100 ℃ significantly decreased the starting temperature of AIN shrinkage.
    由于Li2O和Al2O3在l 100℃以下反应生成含Li玻璃相,使得AlN开始收缩的温度大为降低。
    Above 1 600℃ ,the glass phase containing Li was lost because of the decomposition and evaporation of Li2O, which purifies the grain boundaries of AlN. The transformation from CaYAl3O7 to CaYAlO4, which exists in AlN in liquid form, simultaneously makes the continuous shrinkage possible after Li2O evaporated.
    在1 600℃以上,含Li玻璃相分解散失,有利于AlN晶界的纯化,同时,CaYAl3O7向CaYAlO4的转变以及液相CaYAlO4在烧结过程中稳定存在,保证了含Li玻璃相散失后AlN的持续收缩。
    In the mullite bonded Al 2O 3-SiC refractory castable,the continuous matrix are formed by the mullite phase and the glass phase that fills in the interstitions of mullite.
    结果表明 :在莫来石结合Al2 O3 -SiC浇注料中 ,莫来石相与填充在其间隙的玻璃相形成连续基质 ;
    The results indicate that the best sintering properties appear in Si 3N 4 ceramics with 5% Y 2O 3 or 8% CeO 2. Secondary crystallites are formed at grain boundaries after heat treatment, which decreases the amount of glass phase and contributes to the improvement of the high temperature mechanical properties of silicon nitride.
    Y2 O3 添加 5 % (此时Al2 O3 含量为 4% )及CeO2 为 8%时对制品烧结促进作用最大。 热处理后在Si3 N4晶界获得结晶完美的二次小晶粒 ,使晶界玻璃相大为下降 ,为Si3 N4高温力学性能的提高奠定结构基础。
    At the optimizing composition of SiO2, Al2O3 and MgO, cordierite is formed among mica crystals contacted each other, and the glass phase is decreased.
    通过优选SiO2,Al2O3和MgO的成分,得到的玻璃陶瓷中除有足够数量的互相搭接良好的云母晶体外,还可以获得堇青石的晶体,它们分布在的云母晶体之间,使玻璃相减少。
    Compared with a monolithic AlON material, the AlON- SiAl 7O 2N 7 composites showed higher oxidation resistance because the formed surface layer with glass phase inhibited inward diffusion of oxygen.
    结果表明 ,AlON -SiAl7O2 N7复相材料显示了较之单相的AlON陶瓷材料更好的抗氧化性能 ,这是因为氧化过程中所形成的含玻璃相的表面氧化层抑制了氧的向内扩散所致。
    Furthermore, a higher viscosity may be observing in the glass phase consisting of Y, Ce and Si, N, O, which is helpful to improve high temperature creep resistance.
    此外,Y,Ce与Si,N,O形成的玻璃相高温粘度高,也对材料抗高温变形有利。
    It indicates that the glaze mainly composes of glass phase, quartz remains and ZrSiO_4Cd(S_xSe_(1-x)) pigment.
    结果表明 :釉的物相组成主要是玻璃相、残余石英及ZrSiO4 Cd(SxSe1 -x)色料 ;
 

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