Recently, foundation of science of country of place of research of metal of Shenyang of Chinese Academy of Sciences and " center of data of interface of Shenyang of the Chinese Academy of Sciences " aid financially below, with the United States university E.Ma teachs Yaohanhuopujinsi and Y.Li of Singapore state-maintaineding university teachs coact, in exploration discovery has strong glass to formed the copper alloy respect of ability to gain new headway. They are a foundation with alloy of 3 yuan of Cu60Zr33Ti7, the locates in three-dimensional composition space optimal glass forms alloy method that uses development (abbreviation " 3D law " ) , in Cu-Ag-Zr-Ti4 yuan in alloy system, the glass that discovers Cu44.25Ag14.75Zr36Ti5 alloy forms critical dimension to be able to achieve 10mm. The compression of this metal glass ruptures intensity and plasticity meet an emergency are mixed for 1970 MPa respectively 2.6% .
They still are in Cu - Hf - Al3 yuan in the department, the composition area that the compound between 3 metals surrounds choice Cu10Hf7, CuHf2 and Cu9Hf7Al4, fixed position gives Cu49Hf42Al9 to form alloy for first-rate glass, the critical dimension that glass forms can achieve 10mm. This is at present the glass in 3 yuan of departments forms cupreous radical the alloy with the strongest capability. This metal glass not only intensity is high (compress rupture intensity is 2600 MPa) , hold good plasticity) concurrently at the same time, still have proportion of large interval of temperature of super-cooling liquid state to wait for a characteristic greatly.
With normally phase of polycrystal metal stuff is compared, metallic glass is arranged because of atomic it is short distance only orderly, orderly without periodic long Cheng, and have caustic of high strenth, tall hardness, tall stretch limit, anti-corrosive, wear-resisting to wait for superior performance. Use common matrix mould technology to be able to obtain a metal material of vitreous piece body (measure is more than 1mm) , the application that is metallic glass showed encouraging prospect. In more than 10 years of in the past, piece body metal glass (BMG) serves as new one metalloid material aroused the research interest of numerous scientist on the world, new research achievement is like emerge ceaseless emerge in large numbers. Development low cost, avirulent sex, with metal of commonly used project (wait like iron, copper, aluminous, magnesian, titanium) make those who give priority to an element a central point that body metal glass makes research quickly. Apparent, this also is to have stuff final and practical the commanding elevation that turns intellectual property.
