查询词典 sic

In the other hand, graphite carbon and SiC oxidizing produce CO、SiO〓 and in the same time CO separates graphite carbon partially, this effect will decrease decarburizing rate and corrosion rate for Al〓O〓-SiC-C brick. TiO〓 and SiO〓 protective layer forming and separating graphite carbon are the main factor of resistance smelting reduction molten slag-iron to corrode and the main feature of corrosion process.

Al〓O〓-C-SiC砖在侵蚀过程中，由于SiC氧化后产生CO，SiO，并析出碳和降低耐火材料气孔率及氧化形成的SiO〓成为保护膜，使熔体对耐火材料的侵蚀能力降低，这两种耐火材料的侵蚀速度都是随着使用时间延长，耐火材料侵蚀速度逐渐降低。

The results show that a certain degree of increase of SiC content was helpful for nitrification of TiSi2, and SiC particles were nitrified during the SHS p.

结果表明：SiC在一定范围内增加有利于TiSi2的氮化，且含40%SiC和50％SiC的压坯在燃烧合成过程中发生了SiC的氮化反应。

The of pulse frequency,cathode current density,SiC in bath,bath temperature on the SiC content in the coating were discussed.

讨论了脉冲频率、阴极电流密度、镀液中S iC含量、镀液温度对镀层中微粒含量的影响。

The metal element powders were mixed proportionally with ZrB2/ZrC/SiC ceramic powders in the cylinder mill, then the quaternary ZrB2/ZrC/SiC+Me ceramics were prepared by hot-pressing mixed powders.

将金属元素粉按一定配比与ZrB2、ZrC和SiC陶瓷粉末混合后热压制备了ZrB2/ZrC/SiC+Me 四元陶瓷，重点研究了四元陶瓷的密度、弯曲强度、断裂韧性、烧蚀性能以及烧蚀前、后的微观组织。

The results show that the best sintering process for SiC preform is 1100℃, 8 h in vacuum, by which the open porosity is 99.6% and the preform strength reaches 0.57MPa. The thermo-physical characteristics of 57% SiC/Al composites produced by this technique are as follows: the relative density is 98.7%; the thermal expansion coefficient is 7.5×10^(-6)℃^(-1) which almost matches those of GaAs and BeO; the thermal conductivity is 1.65×10^5W/K, which corresponds to that of Cu(15%)/W and decuples that of Kovar alloy; the density is close to that of aluminum and less than that of one fifth of Cu/W.

结果表明：经1100℃真空烧结8h的SiC预成形坯开孔率可以达到99.6%，抗压强度为0.57MPa；所制备的57%SiC/Al复合材料相对密度为98.7%，热膨胀系数为7.5×10^(-6)℃^(-1)，与GaAs、BeO的接近，热导率为1.65×10^5W/K，与传统Cu(l5%)/W相当，是柯伐合金的10倍，在密度上接近Al，不到Cu/W的1/5。

The joinings of graphite,SIC ceramic and 3D-C f /SiC composites were obtained by using silicone resin as a precursor at 800-1400℃.Effects of the curing and pyrolysis process of SR,pyrolysis temperature,holding time and heating rate on the joining were especially studied.

由硅树脂作为先驱体，在高温（800-1400℃）转化陶瓷结合层对石墨、SiC陶瓷及3D- C f/ SiC复合材料进行了连接实验，着重探讨了硅树脂固化裂解过程、裂解温度、保温时间及升温速率对连接性能的影响。

The composite material reinforced by the nanometre sized SiC particulates is more homogeneous and fine in microstructure and its hardness and electrical resistance are superior to the composite made of micrometre sized SiC to a great extent.

与微米颗粒相比，纳米颗粒增强的复合材料组织均匀而细小，硬度及电阻均有较大幅度的升高。

An Al base composite material reinforced by nanometre sized SiC particulates has been prepared by using powder metallurgy technique. Its microstructure and properties were examined in comparison with similar composite reinforced by SiC particulates sized in micrometre.

用粉末冶金方法制备了纳米尺寸SiC颗粒增强铝基复合材料，并将其组织及性能与相同工艺制备的纯铝和微米尺寸SiC颗粒增强的铝基复合材料进行了对比。

Compared with non-pelletized SiC powders, the packing density of spray pelletized SiC powders increases about 30-50% and the angle of repose decreases about 10℃.

同未经喷雾造粒的粉料相比，喷雾造粒SiC粉料的松装密度提高了30-50％，休止角降低了10℃左右。

Results show that the developed SiC/Ti/Al2O3 ceramic material can be expected to achieve the highest thermal shock resistance when the volume fraction of Ti and SiC is about 10.4% and 27.1%, respectively.

结果表明：当TiC，N）和SiC的体积含量分别为10.4%和27.1%时，该材料具有最高的抗热震性能，比纯氧化铝陶瓷提高约55%。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。