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包埋渗
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  pack cementation
     Oxidation-resistant silicide coatings on the surfaces of Nb silicide based alloy were prepared by pack cementation technique. The holding temperatures were 1050, 1150 and 1250℃ and the holding time was 2, 5, 10, 15 and 20h respectively.
     利用高温高真空可控气氛包埋渗炉在合金表面制备了抗氧化硅化物涂层,渗硅温度分别为1050、1150和1250℃,渗硅时间分别为2、5、10、15和20h。
短句来源
  “包埋渗”译为未确定词的双语例句
     The coating growth kinetics at 1 050,1 150 and 1 250 ℃ were all fitted well to parabolic laws.
     在包埋渗温度分别为1 050、1 150和1 250℃时,涂层生长的动力学曲线均符合抛物线规律。
短句来源
     A novel CeO 2-dispersed chromizing coating was fabricated through prior electroplating a Ni-CeO 2 composite film on a mild steel and then chromizing.
     用Ni-CeO2 复合电镀后包埋渗Cr的方法在低碳钢上制备了CeO2 改性的渗Cr涂层 .
短句来源
     Microstructural Formation and High Temperature Oxidation Resistance of Pack Siliconized Coatings on an Nb Silicide Based Alloy
     铌硅化物基超高温合金包埋渗Si层的组织形成及高温抗氧化性能
短句来源
  相似匹配句对
     2. embed;
     2.包埋
短句来源
     Phosphatic Ceramic Embedding Material
     磷酸盐包埋材料
短句来源
     Plasma Sulfo-Nitro-Carburizing
     等离子S-N-C共
短句来源
     Microstructural Formation and High Temperature Oxidation Resistance of Pack Siliconized Coatings on an Nb Silicide Based Alloy
     铌硅化物基超高温合金包埋Si层的组织形成及高温抗氧化性能
短句来源
     The composition of aluminum powder and diffusion scheme for aluminizing 20 carbon steel were optimized experimentally.
     对 2 0碳钢进行了粉末包埋铝试验 ,优化了剂配方及铝工艺。
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  pack cementation
The halide-activated pack cementation process was used to form molybdenum diffusion coating on titanium substrate.
      
A silicide coating was prepared on Ti3SiC2-based ceramic by pack cementation to improve the oxidation resistance of Ti3SiC2, which is a technologically important material for high temperature applications.
      
For that purpose the performance of zinc coatings deposited with hot-dip galvanizing, pack cementation and thermal spraying was considered.
      
In the present work the performance of zinc coatings deposited with hot-dip galvanizing, pack cementation and thermal spraying was considered, in order to protect industrial equipment up to 400°C.
      
A zinc deposition method that could be used instead hot-dip galvanizing is pack cementation, where the substrate is heated immersed in a powder mixture containing Zn and a halide activator (NH4Cl).
      
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Technological features of improved embedding calorization,experimental results of the bleeds,structures of alumetized steel,welding characteristics and corrosion resistance were introduced systematically.The corrosion resistance of improved alumetized steel is superior to 1Cr18Ni9Ti and compatible with 316L steel.Both special technology and equipment for welding of alumetized steel were developed,guaranting the quality of alumetized components.

:简要而系统地介绍了改进型包埋渗铝工艺特点、渗铝剂的实验室研究结果。该渗铝钢层的结构特征、焊接性能以及耐蚀效果 ,无论在高温还是低温下改进型包埋渗铝钢耐蚀效果好 ,都优于 1Cr18Ni9Ti,与 316L钢相当。开发了渗铝钢焊接工艺及专用的生产工艺和装备 ,保证了渗铝件的质量 ,在多种装置上试用效果良好

Commercial application of improved embedding alumetized steel in the heater of atmospheric distillation unit,the heater of vacuum distillation unit,the vacuum distillation tower,the fractionator of catalytic cracking unit,the absorber of desulfurization unit,desulfurization tower for LPG in the refinery of Guangzhou General Petrochemical Works were summarized.Two year test results showed that the corrosion rate of alumetized steel is less than 1Cr18Ni9Ti,the state of alumetized layer has little change before...

Commercial application of improved embedding alumetized steel in the heater of atmospheric distillation unit,the heater of vacuum distillation unit,the vacuum distillation tower,the fractionator of catalytic cracking unit,the absorber of desulfurization unit,desulfurization tower for LPG in the refinery of Guangzhou General Petrochemical Works were summarized.Two year test results showed that the corrosion rate of alumetized steel is less than 1Cr18Ni9Ti,the state of alumetized layer has little change before and after test.The sulfur content in surface corrosion product of 1Cr18Ni9Ti is 11 times that alumetized steel.

总结了改进型包埋渗铝钢 (渗铝吹灰管、散装填料、换热器管束、塔板 )在加工进口高硫原油的广州石油化工总厂炼油厂常压蒸馏装置加热炉、减压蒸馏装置加热炉、减压蒸馏塔、催化裂化分馏塔、焦化分馏塔、脱硫吸收塔、液化石油气脱硫塔的工业应用和现场挂片试验情况。两年的实验结果表明 ,渗铝钢的腐蚀速率不到 1Cr18Ni9Ti二分之一 ,试验前后的渗铝层状态变化很小 ,1Cr18Ni9Ti表面腐蚀产物中的硫含量比渗铝钢高出 11倍。工业应用证明渗铝钢耐高硫原油腐蚀性能优良

High temperature H 2S corrosion of some materials used in refinery was studied. The aluminized steel showed better corrosion resistance then other materials.

针对硫化氢对炼油装置造成的严重腐蚀 ,在实验室条件下研究炼厂高温硫化氢的腐蚀特点 ,仅就硫化氢的浓度、温度及腐蚀时间对渗铝钢某材料进行耐蚀性评价。实验证明 :粉末包埋渗铝钢具有优良的耐高温硫化氢腐蚀性能

 
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