Reactive Plasma Sprayed TiN Coating and Its Thermal Stability

 TiN coating was prepared by reactive plasma spraying in the Ar and N2 containing plasma jet. The results of XRD show that the TiN coating consists of TiN and Ti3O, neither Ti2N nor TiO2 phases. The toughening mechanism was characterized by analyzing the SEM morphologies of the TiN coating′s indentation of microhardness and fracture surfaces. The results indicate that the coating possesses a high toughness. The adhesion strength among the TiN layers is 2588 MPa, which is slightly lower than that of the Ni/Al bonding coating. The oxidation process of the RPS TiN coating is TiN→Ti3O→TiO2.     

活动极坐标系与平面齿廓

从文献[1]介绍的啮合方程出发,改为活动极坐标系得到含两个未知函数的不定常微分方程,根据不同需要,附加一定条件,可以得出该方程的解分别为渐开线或摆线齿廓的结论,并着重探讨了齿廓间作纯滚动的条件和解法。     

A Study of Applications of Multiagent System Specifications and the Key Techniques in Automatic Abstracts System

A Study of Applications of Multiagent System Specifications and the Key Techniques in Automatic Abstracts System     

Watermarking on Colored Images

1　ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｅｌａｓｔｆｅｗ ｙｅａｒｓ,ｍａｎｙｓｃｈｅｍｅｓｏｆｗａｔｅｒ ｍａｒｋｉｎｇｈａｖｅｂｅｅｎｉｎｔｒｏｄｕｃｅｄ ,ａｎｄｔｈｅｒｅｓｅａｒｃｈｅｒｓａｌｗａｙｓｔｒｙｔｈｅｉｒｂｅｓｔｔｏｆｉｎｄａｎａｌｇｏｒｉｔｈｍｗｈｉｃｈａｌ ｌｏｗｓｔｈｅｍｔｏｅｍｂｅｄａｒｏｂｕｓｔｗａｔｅｒｍａｒｋｗｉｔｈｏｕｔａｆ ｆｅｃｔｉｎｇｔｈｅｑｕａｌｉｔｙｏｆｔｈｅｉｍａｇｅ.Ｕｐｔｉｌｌｎｏｗ ,ｔｈｅｒｅｈａｓｂｅｅｎｎｏｓｃｈｅｍｅｇｏｏｄｅｎｏｕｇｈｔｏｂｅａｄ…     

E-Commerce-Objected E-Stamp Systems

1　ＩｎｔｒｏｄｕｃｔｉｏｎＷｉｔｈｔｈｅｇｌｏｂａｌｉｚａｔｉｏｎｏｆｉｎｆｏｒｍａｔｉｏｎａｎｄｅｃｏｎ ｏｍｙｏｖｅｒｌｏｗ ｃｏｓｔＩｎｔｅｒｎｅｔ,ｍｏｒｅａｎｄｍｏｒｅｐｅｏｐｌｅｇｒｅａｔｌｙｄｅｐｅｎｄｏｎｉｎｆｏｒｍａｔｉｏｎｎｅｔｗｏｒｋｓ,ｏｆｗｈｉｃｈｅ ｃｏｍｍｅｒｃｅｉｓａｎｏｂｖｉｏｕｓｅｘａｍｐｌｅ[1～ 2 ] .Ｂｕｔｕｐｔｏｎｏｗ ,ｎｅｗｓａｔｈｏｍｅａｎｄａｂｒｏａｄｓｔｒｏｎｇｌｙｉｎｄｉｃａｔｅｓａｆａｃｔｔｈａｔｌｏｇｉｓｔｉｃｓｈａｓｂｅｅｎａｂｏｔｔｌｅｎｅｃ…