查询词典 carburize

A series of molybdenum carbide catalysts were prepared using 20%CH4-H2 to carburize molybdenum trioxide at different temperatures. The catalysts were characterized using X-ray diffraction, X-ray photoelectron spectroscopy and N2-adsorption. Their catalytic performance was evaluated in the model reaction of the dry-methane reforming to synthesis gas. Here, the characteration of bulk and surface Mo2C catalysts and its influence on the catalytic performance were described.

以MoO3为前驱物，于20%CH4-80%H2的混合气体(100 mL/min)中，在不同设定终温下进行碳化，制备了一系列不同碳化终温的Mo2C，通过XRD和XPS等手段进行了表征，并对其甲烷二氧化碳重整制备合成气的催化性能进行评价，讨论了碳化终温作为Mo2C的制备参数，与所制备的Mo2C体相、表面特征和催化剂性能的关系。

Molybdenum carbide catalysts were prepared by temperature-programmed reaction using CH4/H2 gas mixture to carburize molybdenum trioxide at different temperatures, then were characterized with XRD and BET.

以MoO3为前躯体，CH4/H2为还原碳化气，采用自制的程序升温还原碳化反应装置制备出Mo2C催化剂，并用XRD、BET进行表征。

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It is possible to carburize any steel containing less than the 0.70%~1.20% carbon that is produced in the surface material.

它是可能的渗碳钢，任何含有少于0.70 ％ 1.20 ％碳是产生于表面的材料。

"Carburize:To treat, combine, or impregnate with carbon, as when casehardening steel ."

使渗碳，碳化：使与碳一起处理，使与碳混合或使充满碳，如将钢的表面粹火硬化。

With rowing box carburize ,glowing furnace,high frequency furnace and medium frequency furnace can meet various requirements for heat treatment.

我厂依靠先进的工艺技术装备、熟练而精细的操作技巧以及可靠的质保体系和优质诚恳的经营作风为产品提供了质量保证。随着企业的发展，如今产品已达30多个品种、300多个规格，能全面满足顾客的要求。

With rowing box carburize ,glowing furnace,high frequency furnace and medium frequency furnace can meet various requirements for heat treatment.

我厂依靠先进的工艺技术装备、熟练而精细的操作技巧以及可靠的质保体系和优质诚恳的经营作风为产品提供了质量保证。随著企业的发展，如今产品已达30多个品种、300多个规格，能全面满足顾客的要求。

The conventional method of preparing fine cemented carbide is to reduce and carburize fine W and WC powder at low temperature, then inhibitors,such as TaC, Cr3C2 and VC, are usually added into the powder to prevent the WC grains from coarsening during sintering.

制取这种微晶硬质合金通常的方法是，用还原和碳化方法，首先得到细W粉和WC粉，然后加入TaC、Cr3C2和VC等晶粒长大抑制剂，并且通常是将这些抑制剂加入到W粉或WC粉中，防止WC晶粒在烧结时长大变大变粗。

The reduction temperature has great influence in constituting slag and iron phase coacervation. High temperature will add iron phase carburize and fall down melting and accelerate iron phase coacervation.

高温下有利于铁相渗碳，熔点降低，加速铁相凝聚，温度在1330~1380℃时得到的铁颗粒大小较均匀；④渣相碱度高低对渣铁的分离产生较大的影响。

The present invention has the hot treating furnace pre-vacuumized to 10-100 Pa, introduced with high purity nitrogen and heated to 900-1050 deg.c, before maintaining and introducing acetylene gas to carburize at nitrogen pressure of 0.1-0.11 MPa and acetylene gas pressure of 5000-20000 Pa.

本发明通过向设有炉内循环风机的热处理炉进行预抽真空至10-100Pa，通入高纯氮气，再将炉温升至900-1050℃，保温后再通入乙炔气进行渗碳，炉膛内氮气的压力为1×10 5 -1.1×10 5 Pa之间，充入的乙炔分压为5000-20000Pa之间。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。