Dry wear experiments provide an insight detail on how severely contacting surfaces change under unlubricated sliding condition. The theory of dry sliding wear is used for understanding mixed-lubrication regime in which asperity interactions play a significant role in controlling of the friction coefficient (f). The purpose of this work is to study the tribological behavior of AISI 304 steel in contact with AISI 52100 steel during wear. Both materials are used in rolling element bearings commanly. Experiments are carried out using a pin-on-disc tribometer under dry friction condition. The areal (three dimensional, 3D) topography parameters are measured using a 3D white light interferometer (WLI) with a 10× objective. After wear tests, wear mechanisms are analyzed utilizing scanning electron microscope (SEM). Factorial design with custom response surface design (C-RSD) is used to study the mutual effect of load and speed on response variables such as f and topography parameters. It is observed that the root mean square roughness (S_q) decreases with an increase in sliding time. Within the range of sliding time, S_q decreases with an increase in the normal load. Within the range of sliding speed and normal load, it is found that S_q, mean summit curvature (S_sc), and root mean square slope (S_dq) are positively correlated with f. Whereas, negative correlation is found between f and correlation length (S_al), mean summit radius (R), and core roughness depth (S_k).

干磨损实验提供了有关未润滑的滑动条件下接触表面如何剧烈变化的详细见解。干滑动磨损理论用于理解混合润滑方式，其中粗糙相互作用在控制摩擦系数（f）。这项工作的目的是研究AISI 304钢与AISI 52100钢在磨损过程中的摩擦学行为。两种材料通常用于滚动轴承。使用销盘式摩擦计在干摩擦条件下进行实验。使用具有10倍物镜的3D白光干涉仪（WLI）测量面积（三维，3D）地形参数。磨损测试后，使用扫描电子显微镜（SEM）分析磨损机理。具有自定义响应曲面设计（C-RSD）的析因设计用于研究载荷和速度对诸如f和地形参数之类的响应变量的相互影响。观察到均方根粗糙度（S _q）随着滑动时间的增加而减小。在滑动时间范围内，S _q随着正常载荷的增加而减小。在滑动速度和法向载荷的范围内，发现S _q，平均山顶曲率（S _sc）和均方根斜率（S _dq）与f正相关。而在f和相关长度（S _al），平均峰顶半径（R）和核心粗糙度（S _k）之间发现负相关。