Trusted autonomic service cooperation model and application development framework

To achieve the dynamical on-requirement self-organization and self-evolution of virtual organizations(VOs) by autonomic service cooperation is an excellent approach for developing assembled serviceoriented application software systems in the Internet computing environment. However,this approach,due to the fact that the autonomic individual behaviors are difficult to be predicted and controlled,encounters the "trust" crisis of cooperation effect. In order to solve the above crisis,this paper proposes a model...     

功率对激光熔覆Al-TiC-CeO2复合涂层组织与性能的影响

采用激光熔覆技术制备Al-TiC-CeO2复合涂层,并利用扫描电镜、X射线衍射仪、显微硬度计、摩擦磨损试验机、X射线应力测定仪、电化学工作站研究了不同的激光功率对涂层的组织、硬度、耐磨性、耐蚀性以及残余应力与裂纹的影响。结果表明：不同功率制备的涂层均出现Al-Fe相,与基体都呈现出良好的冶金结合,随着激光功率的增加,涂层的稀释率逐渐增加,涂层由块状和短棒状组织转变为细小颗粒状组织,细晶强化作用明显,涂层内各组织成分分布较均匀,此外,随着激光功率的增加,涂层表面显微硬度和耐磨性先减小后增加,涂层表面的残余应力均为拉应力,裂纹随着应力的升高而变大,当功率为1.6 KW时,涂层表现出较高的耐蚀性。