Mechanical seal : use of wb2 and st non - water - cooled adjustable end face sealing technology , composed of silicon carbide , high purity alumina ceramic , packing ptfe and graphite etc 机械密封：采用wb2型、 st型不用冷却水可调式端面密封技术，由碳化硅，高纯度氧化铝陶瓷、填充四氟，石墨等材料制成。
Toughening mechanism of zro2 ( y2o3 ) to alumina ceramic came from the phase change of t - zro2 on the grain boundary . with the content augmentation of zro2 ( y2o3 ) , the fracture toughness of the alu Mga12o ;和zro :平均热膨胀系数与a1203的热膨胀系数比较接近，匹配性较好，不会产生明显的热应力，有利于氧化铝陶瓷力学强度的提高。
Alumina ceramics , as one of the important advanced ceramic materials , has been widely used in many fields owing to its many excellent properties such as high - strength , high - temperature - resistant , good attrition and high resistance , and so on 氧化铝陶瓷具有高强度、耐高温、耐磨性好和电阻率大等优良的综合性能，广泛应用于电子、机械以及化学工业与领域。
Ceramic materials , especially alumina ceramic , have series of superior properties such as high - temperature resistance , etching resistance , wearing resistance , lightweight , and so on . however , their fatal weakness - brittleness , seriously limit their practical usages 陶瓷材料，特别是氧化铝陶瓷，具有耐高温、耐腐蚀、耐磨损和重量轻等一系列优良的性能，但由于其致密的弱点? ?脆性，大大限制了其实际应用。
In order to overcome the influence of the technology factor in active molybdenum - manganese metallization , the formulation , raw material treatment , painting method and sintering process are improved in alumina ceramics metallization , which can raise the technique level , product quality and uniform 摘要针对影响氧化铝陶瓷活化钼锰法金属化的工艺因素，在配方、原料处理、涂敷方式、烧结等方面进行改进，提高工艺水平，保证质量稳定性、一致性。
Baoying county huaming ceramics co . . ltdis an enterprise specialized in producing all kinds of fine electronic ceramics such as 95 % alumina ceramics , talcous ceramics , etc and assembling ceramics ignition needle , ceramics probe , ceramics lamp holder of electric light source for all kinds of fuel gas device 宝应县华明陶瓷有限公司是一家专业生产95 %氧化铝瓷、滑石瓷等各类精细电子陶瓷及组装各类燃气具点火装置中陶瓷点火针、探针和电光源陶瓷灯头、灯座厂家。
Using the advanced technology by its head office ( newkey co . , ltd . ) , it produces various kinds of alumina black and white ceramic products . the component alumina ceramics , which are widely used in electron components , devices , electrical products , enjoy low loss of high frequency , high insulating strength , good specific volume resistance , small dielectric constant , high mechanical intensity and excellent airtightness and thermal and chemical stability 本公司根据目前市场需求，生产出各种型号的黑、白陶瓷产品，广泛应用于电子、电工、化学工业、纺织工业、水暖、宇航、环保等诸多方面，系列产品有高频损耗少，比体积电阻大，介电常数小，强度高，气密性、热稳定性、化学稳定性好等特点。
Surface flashover across the insulators in vacuum is the major limitation of the performance of the high power system , such as high power microwave tube , pulse power switch , high - energy linear accelerator , etc . flashover studies are of considerable importance in many applications . alumina ceramics are used widely in vacuum insulation system . the flashover and charging performance have been systematically investigated on alumina ceramics in vacuum under pulse voltage ( 0 . 7 / 4 ^ 8 ) 真空中绝缘子沿面闪络现象是制约高功率微波管、脉冲功率开关、高能粒子加速器等系统性能的主要原因，这是因为真空中绝缘子在一个比自身及相同真空间隙击穿电场低得多的电场下就发生了表面闪络的缘故，研究真空中绝缘子沿面闪络现象及其形成机理对于改善和提高系统性能有重要意义。
We have an independent company to develop new products and high - tech ceramics technical capacity , it has been possible to produce wear - resisting , 95 % alumina ceramics , pottery , 99 % alumina oxide ceramic - hardness above 99 % , against electrostatic red ceramics , etc . , and our company is uniquely polishing technology , the technical indicators have reached or come close to the same level 我公司具有独立开发新产品及高新陶瓷技术的能力，现已能生产耐磨、 95 %氧化铝陶瓷、 99 %氧化铝陶瓷及超硬度99 %以上氧化铝陶瓷、防静电氧化钛陶瓷等等，并且我公司具有独特的抛光技术，各项技术指标都已达到或接近国际同等水平。
In the process of making 95 alumina ceramics , selected five kinds of alumina powder and studied the influence of different alumina powder on the sintering properties and mechanic properties of 95 alumina ceramics , moreover , selected the most agreeable alumina powder according to the apparatus for granularity analysis and scanning electron microscope ( sem ) . the influence of different sintering temperature on the sintering mechanic properties , the microstructure of 95 alumina ceramics were investigated by adding y2o3 and la2o3 as two kinds of rare earth additives in alumina ceramics . the results indicated that the additive of la2o3 could improve the properties of 95 alumina ceramics more effectively and could get fine grain and tabular alumina that can enhance the strength of the material 选用了五种al2o3粉料，研究了其对95al2o3瓷烧结性能和力学性能的影响，并结合粒度分析仪sem对al2o3粉料进行优选；通过添加y2o3 、 la2o3两种稀土添加剂，研究了不同烧成温度对95al2o3瓷的烧结性能、力学性能及显微结构等的影响，结果表明：添加la2o3可以有效提高95氧化铝瓷烧结性能和力学性能，形成细晶和板状氧化铝瓷的显微结构；通过对比不同氧化铝粉料制备氧化铝瓷烧成温度曲线与烧结性能的关系，确定最佳的烧成温度范围为1570 ~ 1600 。
