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浩良河水泥有限责任公司2000t/d生产线于1996年全线建成投产,年产水泥70.5万t。烧成系统采用Φ3.95m×56m回转窑带五级旋风预热器和离线喷腾式分解炉,熟料冷却采用空气梁阶梯高阻篦板型冷却机。该生产线运行5年多来,经过不断进行完善和调整,生产已经正常。为了进一步摸清生产情况,达到优质、高产、低耗的目的,公司委托济南大学(原山东建材学院)对窑炉的煅烧系统进行了全面的热工标定。标定结果表明,系统设备性能良好,运行操作基本正常,已经超产达标。1系统运行与改造情况11煅烧系统主要设备见表1表… 相似文献
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1 INTRODUCTIONYttriumaluminum garnet(YAG )isakindofcomplexoxideresultedfromthereactionofY2 O3andAl2 O3.ItschemicalformulaisY3Al5O12 .Ithasagarnetcrystalstructureandbelongstohexagonalsys tem .YAGceramicsholdpromiseforcertainopticalapplicationssuchashightemperaturewindowsusedtodetectinfraredwavesordevicesusedtorecordnu clearradiation .Becauseofitsthermalstability ,highhardness,physicalandchemicalstability ,andexcel lenttransparencyinawidewavelengthregionfromvisiblelighttoinfraredlight… 相似文献
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采用放电等离子装置烧结制备TiC/TiAl复合材料,在一定烧结压力以及保温时间条件下,研究了烧结温度对TiC/TiAl复合材料致密度的影响,并对烧结过程进行了分析。实验结果表明在1100℃,30MPa的压力下,保温10min就可得到致密超过98%的TiC/TiAl复合材料。而采用传统热压法烧结TiC/TiAl复合材料烧结温度则需要达到1250℃,保温时间为2小时。通过比较可以充分体现出放电等离子烧结技术的优越性。另外,SEM观察表明采用等离子放电烧结的TiC/TiAl复合材料断面组织均匀致密,无显著气孔。 相似文献
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岳云龙 《武汉理工大学学报(材料科学英文版)》2007,22(2):291-294
Using spark plasma sintering(SPS)technique,TiC particle reinforcedγ-TiAl composites were prepared with varying weight fraction of TiC powders.The effects of the TiC fractions and distributions on the properties of the composites were investigated.The composite containing 7wt%TiC had the optimum three-point bending strength of 842 MPa,which was 200 MPa greater than that of the unreinforcedγ-TiAl intermetallic.The degradation of the bending strength occurred in the composites containing more than 7wt% TiC and this was believed to be attributed to agglomerated particles of TiC,which acted as crack initiation and propagation sites.The increase of strength in TiC reinforced IMCs came from the grain refinement and the interaction of dislocations with the reinforcing particles.The bending strength of the IMC containing 7wt% TiC was theoretically estimated to increase by 85 MPa and 200 MPa,respectively,by the grain refinement and dislocation strengthening,the total of which was almost in accordance with the improvement in that of the unreinforcedγ-TiAl intermetallic when considering normal estimation errors. 相似文献