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fast sintering
相关语句
  快速烧结
     FAST SINTERING OF NANOCRYSTALLINE ZrO_2(Y_2O_3)POWDERS AT ULTRA-HIGH PRESSURE
     ZrO_2(Y_2O_3)纳米粉在超高压下快速烧结
短句来源
     R18K and R20K type cores can also be produced by fast sintering in bell-kiln. In addition , ET, EP, RM and annular cores made of R7K and R10K materials which are sintered simultaneously with PC40 material in the N2 roller-kiln have high impedance, high Curie temperature and excellentμ~f characteristic.
     在钟罩炉中可快速烧结出R18K、R20K样环,特别是在功率N2窑中与PC40材料同烧的R7K、R10K材料ET、EP、RM和环形磁芯,具有高阻抗、高居里点和良好的μ~f特性,获得了用户的好评。
短句来源
     Fast Sintering of Nanocrystalline WC-6Co Composite Powder
     纳米复合WC-6Co粉末的快速烧结
短句来源
     Therefore, working on study and exploration on hydrogen decrepitation and electric field fast sintering of NdFeB alloys will not only have innovations, but also have important scientific and engineering values.
     因此,本文对NdFeB合金的氢爆及其电场快速烧结技术的研究和探索既具有创新性,又具有重要的科学价值和工程应用价值。
短句来源
     New fast sintering techniques should be employed because the key to obtaining nano-cemented carbide is to control the WC grain growth during sintering.
     指出要成功制备纳米硬质合金,关键在于控制烧结过程中WC晶粒的长大,探索新的快速烧结方法。
短句来源
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  “fast sintering”译为未确定词的双语例句
     So the preferred sintering technology is fast sintering at low temperature, and its parameters are: the sintering temperature-750C; the holding time-20min.
     因此适用于CaCO_3+BG体系的烧结制度为低温快烧,最佳工艺:烧结温度750℃,保温时间20min,玻璃相含量30%。
短句来源
     According to the composition and property of paper white sludge,taking the sludge as a main raw material and adding some siliceous raw material,the wollastonite was synthesized by sintering method at lower temperature (1100℃). The adding quantity of paper white sludge was 70%. The synthetic wollastonite can be comprehesively applied to the fast sintering once at low temperature glazed tile.
     根据造纸白泥的组成、性能、特点,以白泥为主要原料,加入一定量硅质原料,采用烧结法低温(1100℃)合成了硅灰石,其白泥用量占原料总质量分数的70%,并将合成的硅灰石综合用于一次低温快烧釉面砖中,其理化性能指标均达到国家标准。
短句来源
     The mechanism of vanadium quick carbonizing and composite powder fast sintering and compacting of the compressed block during casting was investigated. Wear resistance of V 8C 7 particle reinforced iron surface matrix composite was examined using MM-200 wear-test machine.
     探讨了粉料压坯快速完成钒的碳化反应和烧结致密化的机理,用MM200磨损试验机检测了碳化钒颗粒增强铁基表面复合材料的耐磨性。
短句来源
     The alumina ceramic grinding media with alumina content of 50%~70% were prepared by mixing the main aluminaosilicate refractory waste raw materials with appropriate CaO-MgO-Al2O3-SiO2 quaternary flux agent and shaping by cold isostatic pressing or plastic molding technology and using low temperature and fast sintering technology. The wear resistance of the prepared ceramic grinding media and the compared samples were tested in corundum pot by intergrounding in the pot.
     通过将废料与适量CaO-MgO-A12O3-SiO2体系的助熔荆配合,采用冷等静压成型工艺或可塑成型工艺和低温快烧工艺,制备了氧化铝含量为50%-70%的性能优异的陶瓷研磨介质.
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  fast sintering
Large pores of aerogels allowed fast sintering in 16 and a half hours.
      
However, unexpectedly fast sintering was observed for the crystalline polyethylenes.
      
A preseeding step by a fast thermal treatment of the amorphous powder as well as a fast sintering procedure of green compacts, following some literature indications, were also performed as a comparison.
      


Methods of specific surface area determination (SSA), pore size distribution (PSD) and ray diffraction (XRD) are employed to detect the sitering behaviour of the porous SiO2 and SiO2 +MO,which are used as the support of catalysts (MO means the oxides of the basic earth metals. ). It is found that the fine uncrystal SiO2 start sintering from about 700℃ ; At the same temperature sintetingdoes not carry on at the same speed. It occurs in different fast stages. After sintering the SSA decreases,...

Methods of specific surface area determination (SSA), pore size distribution (PSD) and ray diffraction (XRD) are employed to detect the sitering behaviour of the porous SiO2 and SiO2 +MO,which are used as the support of catalysts (MO means the oxides of the basic earth metals. ). It is found that the fine uncrystal SiO2 start sintering from about 700℃ ; At the same temperature sintetingdoes not carry on at the same speed. It occurs in different fast stages. After sintering the SSA decreases, but the average pore size increases. When MO are added, SSA of SiO2 decrease, and after sinter-ing SSA loses much more. Comparatively speaking, the influence of MgO on SSA of SiO2 is smaller,while that of BaO decrease SSA seriously both before and after sintering. In the present work, the speed equation is established for the first fast--sintering stage. The fractional geometry model(FGM) is used to explain the different fast-sintering stages and the relationship with shrinkage of the small different-size pores properly. The accompaning phenomena during singtering are also discussed. This port of work has some reference value for the catalysts which are supported by porous SiO2 or SiO2+MO and are used at high temperature.

运用表面积测定,孔径分布,晶相检测等仪器分析方法对作为催化剂载体的多孔SiO2的烧结行为进行了考察.发现非晶SiO2微细颗粒在600℃~700℃间即开始烧结;在恒定温度下,烧结过程并非匀速,而是分成不同的快速烧结阶段.烧结后比表面积减小,但平均孔径增大.加入碱土金属氢化物MO后,原SiO2的表面积减小,烧结后表面积的损失更大;相比而言,加入MgO对比表面积影响较小,而加入BaO则影响较大.对第一快速烧结阶段建立了速率方程;运用分型几何模型理论较好地解释了不同快速烧结阶段问题以及与之相应的不同半径微孔收缩封堵的关系.对于烧结过程中的伴随现象亦进行了探讨.

Super fine sponge-Ni material was obtained by the method of chemistry, which has the surface area of 74. 7 m2/g and average of particle size of 2-5 nm. After sintering in the range of 375 ̄600℃ and in different gases at each time interval, the samples were taken out and instrumental methods of SSA, SEM, TEM, XRD were used to detect their sintering extents respectively. It is found that the sintering takes place at 400℃ evidently; sintering reduces the surface area, increases the particle size, and develops crystallization:...

Super fine sponge-Ni material was obtained by the method of chemistry, which has the surface area of 74. 7 m2/g and average of particle size of 2-5 nm. After sintering in the range of 375 ̄600℃ and in different gases at each time interval, the samples were taken out and instrumental methods of SSA, SEM, TEM, XRD were used to detect their sintering extents respectively. It is found that the sintering takes place at 400℃ evidently; sintering reduces the surface area, increases the particle size, and develops crystallization: and that in different gases the SSA follows the order: Hefast sintering stage,the main mechanism is particle migrationi while at the following slow sintering stage,the main mechanism is atom migration. The accompanying phenomena in sintering process are discussed also.

用化学法制得比表面积为74.7m~2/g的超细海棉镍,其平均粒度为2~5nm。在375~600℃范围内的不同气氛中进行烧结,并在一定时间间隔内对样品进行表面积测定,且采用扫描电镜、透射电镜、X射线衍射等手段对烧结前后的样品进行对比。结果表明,微细镍颗粒在400℃即已有明显烧结;烧结使表面积减小,颗粒度增大,结晶度提高;在不同气氛中烧结程度不同,在He、N_2、H_2中烧结程度依次减轻;开始烧结阶段,表面积下降迅速,其后变化明显减缓.

To the best of our knowledge, the smallest grains of crystalline 3Y-TZP ceramics arethose of about 120nm obtained by Qiu et al in a Chinese national laboratory in Shanghai [3].But Qiu et al used fast sintering process. In this paper, we present our Tesearch findingsabout how to get such grains 120nm in diameter under pressureless sintering conditions.3Y-TZP ceramics should be not only small in grain size but also dense. This is ratherdifficult to achieve. We adopt two technical methods for achieving...

To the best of our knowledge, the smallest grains of crystalline 3Y-TZP ceramics arethose of about 120nm obtained by Qiu et al in a Chinese national laboratory in Shanghai [3].But Qiu et al used fast sintering process. In this paper, we present our Tesearch findingsabout how to get such grains 120nm in diameter under pressureless sintering conditions.3Y-TZP ceramics should be not only small in grain size but also dense. This is ratherdifficult to achieve. We adopt two technical methods for achieving it:(1) Use of NH4Cl as dispersion agent, we find that thougth NH4Cl in small amountcauses unwelcome agglomeration, but when in sufficient amount, it serves as effective dispersion agent.(2) Suitable control of grain growth in pressureless sintering process. Thus ultra-fine 3mol%Y2O3-ZrO2 powder with all particles quite near 7. 6nm in diameter (Fig. 2) is prepared with our chemical co-precipitation gel method. Grains of onlyabout 120nm (Fig. 5 is an SEM photo) of dense 3Y-TZP ceramics are obtained.

用化学共沉淀凝胶法制备了晶粒度为7.6nm的3mol%Y2O3-ZrO2纳米粉末,所得粉末不仅尺寸小、分布均匀,且分散性好。对该粉末制成的素坯,通过烧结过程中晶粒生长的控制,在1250℃/2h常压烧结条件下获得了晶粒尺寸约为120nm的致密陶瓷体。

 
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