A High Pressure-Short Time Chromatography Using Analysis of Surface Deformation Patterns in Percussive Impact Indentation on Lubricated Surfaces

继关于高压下润滑剂从液体到凝固区的自由体积的论文之后，作者观察了冲击下的动态高压现象。轴承钢球和低碳钢平板的凝固行为不再是以往假定的轴对称行为，而是沿周向呈现出各种各样的各向异性模式，动态条件下的凝固被认为与时间、位置和油液成分有关。在冲击瞬间，初始偏析表现为粒状沉积，在其试板的主压痕上叠加了许多微小压痕。通过分析，可以识别出不同油液成分的干涉条纹的特征图案，并测量出配合板的三维轮廓。用同样的方法阐明了5P4E酯的独特性能。因此， ...更多信息 润滑剂凝固动力学现象的瞬态行为具有广泛的适用性。在接触条件变化如此迅速的情况下，界面现象对接触变形起着重要的作用。通过对润滑表面冲击压痕表面变形规律的分析，得出以下结论：1.用干涉条纹图测量了压痕的中心部分。观察到轴对称和非轴对称的图案。油液均相凝固形成了轴对称的凹坑图形，油液分散相凝固形成了非轴对称的凹坑图形。并且，非调质钢比非调质钢在这种非对称性上表现得更为显著.用触针式表面粗糙度仪测量了压痕子午截面的轮廓，计算了压痕的有效半径。凹坑的有效半径与油的接触角密切相关。因此，非晶界面现象对压痕有效半径的影响比非晶退火钢更为显著.精确的油膜凹陷形状分析是对油膜瞬态现象在短时间内通过的一次精确观察，它可以考察动态条件下油膜的凝固情况和油膜界面现象的差异。少

Succeeding the papers on free volume of lubricants at high pressure from liquid to solidified regions, the authors are observing dynamical high pressure phenomena under impact Here, lubricant films between solid surfaces, e.g., a bearing steel ball and a flat plate of low carbon steel, no more exhibit axi symmetric behavior as so far assumed a priori, but a variety of anisotropic patterns in circumferentially.The solidification under the dynamical condition is considered to occur depending on time, location and oil composition. At the moment of impact, primary segregation appears as granular deposition remaining a number of minute indentations superposed on principal indentation of its test plate. By analysis, the characteristic patterns of different interferential fringes different according to oil composition can be identified, together with measurement of the three dimensional profile of the mating plate. The unique performance of 5P4E ester is clarified by same means. Thus, the pre … More sent transient behavior of dynamical phenomena of solidification of lubricants develops wide applicability. It is noted that for such a rapid change in contact condition the interfacial phenomena plays a significant role on contact deformation.Summarizing the analysis of surface deformation pattern in percussive impact indentation on lubricated surfaces, the following conclusions are drawn.1. The central part of the dent was measured by fee interference fringe pattern. The axi-svmmetrical and unaxi-symmetrical patterns were observed. The axi-symmetrical pattern of fee dent was formed by homogeneous phase solidification of oil and fee unaxi-symmetrical pattern of fee dent was formed by dispersed phase of solidification of oil. And, fee annealed steel appears on this non symmetry more remarkably than fee hardened steel.2. The profile of the meridian sections of the dent was measured wife fee contact stylus surface roughness tester and fee effective radius of the dent was calculated. The effective radius of the dent was closely related to contact angle of oil. So, fee effective radius of dent was prescribed by fee interfacial phenomenon more remarkably than fee annealed steel.3. The precise analysis of fee dent shape is fee replica observation of fee transient phenomenon to pass in a short time, and it can examine fee solidification of oil under dynamic condition and a difference in fee interfacial phenomena. Less