渗硫

Sulfide layer was made on the surface of high speed steel (W6Mo5Cr4V2) by means of low temperature ion sulfurization. The tribological properties of the sulfide layer under dry sliding were investigated on an MM 200 friction and wear test rig. An atomic force microscope and a scanning electron microscope equipped with an energy dispersive spectrometer attachment were adopted to analyze the morphologies and compositions of the original and worn surfaces of the sulfide layer. The phase structure of the sulfide layer was determined by X ray diffraction.

采用低温离子渗硫工艺在 W6 Mo5 Cr4 V2高速钢表面制备了硫化物固体润滑层，在 MM- 2 0 0型摩擦磨损试验机上对渗硫层的摩擦学性能进行了干摩擦试验研究，用原子力显微镜及扫描电子显微镜和 X射线光电子能谱分析渗层表面、截面、磨面的形貌及成分，用 X射线衍射仪分析了渗硫层相结构。

Ion nitriding+ion sulphurization duplex treatment can extend significantly the endurance life of sulphide layer, and improve very obviously the anti-scuffing behavior of surface at any speed.

喷丸处理在表面形成的大量缺陷促进了渗硫过程中硫向基体内部的扩渗，从而增加了渗硫层的厚度。

The results showed that: During the process of ion sulphurization, the main formation mechanism of sulphide layer is that the elemental sulphur diffuses inward the substrate along its defects, the composition of substrate has a certain effect on the formation process of sulphide layer.

结果表明：在离子渗硫过程中，渗硫层的形成是以硫沿基体缺陷向内部扩渗为主导机制，基体成分对渗硫层的形成过程有一定影响。

Based on the research results, the shot peening+ion sulphurization and ion nitriding+ion sulphurization duplex treatments were used to treat the steel surfaces, the effect of sulphide layer could be further developed.

依据研究结果，对钢铁表面进行喷丸+离子渗硫、离子渗氮+离子渗硫复合处理，以进一步发挥渗硫层的作用。

So that the low temperature ion sulphurization technique can extend the service life of machine parts such as bearings, cutting tools, cylinder liners and piston rings of engine, gears, rollers, steel rings, etc.

渗氮＋渗硫复合处理可使渗硫层的持续时间显著延长，并能在各种速度条件下非常明显地提高表面的抗擦伤性能。

Sulfide layers were made on the surface of AISI 1045 and SAE 52100 steels by means of low temperature ion sulphurization process. The tribological properties of the sulfide layers were investigated on an SRV reciprocating tester under dry and paraffin oil lubricated conditions. SEM equipped with EDAX and XRD were adopted to analyze the morphology and structure of the sulfide layers. The morphologies and composition of the wear scars were also analyzed.

采用低温离子渗硫技术在45＃钢和GCr15 钢表面形成渗硫层，用SRV 往复摩擦磨损试验机分别在干摩擦和液体石蜡润滑下对渗硫层的摩擦学性能进行了研究，用SEM、EDAX 和XRD研究了渗硫层的形貌和结构，并对磨痕的形貌及成分进行了分析。

Meanwhile,atmospheric exposure test and electrolyte soaking method were applied to investigate the effect of different rare earth catalyzers and their content on corrosion resistance of sulfurized Cr12 steel.

借助稀土的催渗作用实现了Cr12钢表面的低温熔融渗硫，用扫描电镜和俄歇电子能谱仪分析了渗硫层的微观形貌和基本成分，并通过大气暴露试验和电解质浸泡试验考察了渗剂中稀土添加剂的类别和加入量对渗硫层抗蚀性的影响规律。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon-nitrided carbon steel and of the sulfurized one were examined by means of X-ray photoelectron spectroscopy and X-ray diffraction.

采用MPX-200型摩擦磨损试验机考察了碳氮共渗及室温电解硫化处理后的20#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon nitrided carbon steel and of the sulfurized one were examined by means of X ray photoelectron spectroscopy and X ray diffraction.

采用MPX-200型摩擦摩损试验机考察了碳氮共渗及室温电解硫化处理后20^#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

Sulphurized-nitrided compound layer is prepared on the surface of drilling pipe joint material 35CrMo steel by the application of ion nitriding and ion sulfurizing technology.

应用离子渗氮与离子渗硫技术，在钻杆接头材料35CrMo钢表面制备了硫氮复合处理层。采用M-200环块磨损试验机，对比研究了原始渗氮表面与硫氮复合表面在干摩擦条件下的抗磨损性能。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。