共搜索到1513条信息,每页显示10条信息,共152页。用时:0小时0分0秒359毫秒
cylinder pressure was established to study the effect of anti-skid control parameters on wheel wear. The results show that in the case of emergency braking with low adhesion, when the deceleration method... constant. Key words: high-speed vehicle; anti-skid control; creep rate threshold; wear index; adhesion force 高速列车需要更好的制动性能.列车普遍采用的制动方式为黏着制动,即其制动力来自轮轨间的黏着力.低黏着(降雪,机油污染,降雨等)会导致车轮发生滑行.车轮滑行会造成车轮踏面擦伤[1]或过度......
by about 50%. The adhesion strength of LiCoO2 coating of positive electrode slice to the surface textured aluminum foil is 1.6 times than that to the normal aluminum foil, and the mean squared error... the adhesion strength of the positive electrode coating to aluminum foil as current collector, but loses the mechanical properties of aluminum foil. After simulating the rolling process and drying process......
and microscratch with a periodic structure consisting of alternating TiAlCrN layer with thick of 400 nm and CrN layer with thick of 200 nm exhibit higher hardness of about 3 450 HV and higher adhesion strength of more than 100 N. Key words: TiAlCrN coating; TiAlCrN/CrN multilayer coatings; arc ion plating; microhardness; adhesion properties  ......
An Easy Way to Quantify the Adhesion Energy of Nanostructured Cu/X(X=Cr,Ta,Mo,Nb,Zr) Multilayer Films Adherent to Polyimide SubstratesKai Wu1,Jin-Yu Zhang1,Gang Liu1,Jiao Li1,Guo-Jun Zhang2,Jun Sun11..., and *1.2 J/m2 for Cu/Zr NMFs. Furthermore, a linear relationship between the adhesion energy and the interfacial shear strength is clearly demonstrated for the Cu-based NMFs, which is highly indicative......
of the mechanically alloyed coatings at different milling durations were studied by SEM, EDX and XRD. The studies on micro-hardness, friction and wear and adhesion strength behavior of the coatings were... with coatings are obviously lower than those of the TC4 substrates. At a milling time of 11 h, the friction coefficient of the coating is 0.18 and the corresponding wear mass loss is 0.8 mg. The adhesion......
. A mathematical model was proposed to show the functional relationship between rainfall intensity and insulator self-cleaning capability. The results show that small particles are affected by adhesion forces...-soluble deposit density; particle size; adhesion force; rainfall 当前,防污工作已成为保障电网安全运行的重中之重.而防污工作的开展通常是以污秽度测量为基础,来研究自然积污的规律,确定污区等级,指导外绝缘设计和调爬清扫等工作[1-6].为提高我国电网外绝缘的整体水平,应采用"绝缘到位,留有裕度"的基本原则.通过依靠设备本体绝缘水平抵御恶劣自然环......
microscope (SEM). The adhesion strength between film and matrix had been evaluated by experiments of sticking-tearing. The results indicated that the coated layer on magnesium alloy were homogeneous, dense and robustly adhered. 关键词:arc-added glow discharge plasma penetrating technique; magnesium alloy; Ti coating; composition; surface morphology; adhesion strength; [全文内容正在添加中] ......
; 有限元分析; high-strength coating; adhesion strength; symmetrical-cut tensile; stress distribution,finite element analysis; [全文内容正在添加中] ......
Effect of EPS on adhesion of Acidithiobacillus ferrooxidans on chalcopyrite and pyrite mineral surfaces YU Run-lan, OU Yang, TAN Jian-xi, WU Fa-deng, SUN Jing, MIAO Lei, ZHONG Dai-li Key... with 2-keto-3-deoxyoctonic acid (KDO) as the indicator of EPS by spectrophotometry. Then the effect of EPS of A. ferrooxidans on the adhesion on chalcopyrite and pyrite surfaces was studied through a series......
on the oxidation rate and on the adhesion of oxide scales grown on three different chemical compositions of high speed steels under dry and wet conditions. The oxidation tests were carried out.... The "adhesion" of the oxide scale was determined using indentation with a Rockwell C diamond and the pull adhesion test to determine the interfacial toughness and the tensile strength of the oxide metal bond......