GEO-2000;Global Environmental Outlook 2000

Effect of tensile strain rate on spall fracture in 20 steel;

拉伸应变率对20钢层裂特性的影响

TiC penetration and depositing on 20 steel surface by double-glow plasma alloying;

20钢表面双辉渗镀TiC陶瓷

Flashing butt welding between ferrite spheroidal graphite cast iron and 20 steel;

铁素体球墨铸铁与20钢的闪光对焊

Taking 20# steel commonly used in heat exchanges as a study object,its anticorrosion of hot-dip aluminizing was researched.

选取换热器中较为常用的材质20#钢作为研究对象,研究了20#钢热浸镀铝的抗腐蚀性能,使用便携式瞬时腐蚀速率测量仪对20#钢热浸镀铝前、后的试样在酸性腐蚀介质和碱性腐蚀介质中的年腐蚀速率进行了测试。

In recent years, thinking of working safe, 20# steel is applied to significant construction project in the homeland more and more, especially to burying field facilities, therefore, The study on 20# steel’s corroding law and forecasts has very strong theory significance and gigantic realistic value.

近年来,出于对安全运行的考虑,20#钢正越来越多的被应用于国内重大建设项目的工程实践中,尤其是被应用于埋地设施中,所以对20#钢在土壤中的腐蚀规律及预测的研究具有很强的理论意义和巨大的实际应用价值。

The tribological properties of GCr15 steel ball against 20# steel disc under unlubricated condition and lubrication of plant oil containing nano calcium carbonate particles were investigated on the Universal Micro-Tribometer.

利用微观摩擦学试验机测定了干摩擦、基础油润滑、添加纳米CaCO3的基础油润滑状态下GCr15钢／20#钢摩擦副的摩擦系数-时间关系曲线,比较分析了三种摩擦条件下曲线的变化规律及影响摩擦系数的因素。

The morphology and formation mechanism of the microstructure of the composite ion-nitrided plus chromized layers obtained at various chromization temperatures in a plain low-carbon steel (steel 20) were investigated using metallography, X-ray diffraction and microanalysis.

应用金相、X射线衍射和微区成分分析研究了20钢经离子氮化后在不同温度渗铬(复合渗铬)所得渗铬层的显微组织及其生成机制。

The microstructure and fracture morpholo gy of steel 20 were studied using scanning electron microscope (SEM) and X-ray diffractometer (XRD).

利用光学显微镜、扫描电子显微镜及X射线能谱仪对20钢火药筒失效样品的断口形貌和显微组织进行了分析。