THE brittleness of abrasion-resistant plain white cast iron has strongly hindered its wider application so far. In order to solve this problem, many researchers have made strenuous efforts to spheroidize the carbide i...THE brittleness of abrasion-resistant plain white cast iron has strongly hindered its wider application so far. In order to solve this problem, many researchers have made strenuous efforts to spheroidize the carbide in white cast iron. By alloying and inoculating the liquid white cast展开更多
The valence electron structure of TiC was calculated by using the empirical electron theory of solids and molecules. The calculated results show that with the increase of temperature the number of common electrons of ...The valence electron structure of TiC was calculated by using the empirical electron theory of solids and molecules. The calculated results show that with the increase of temperature the number of common electrons of TiC increases, which indicates that TiC has a good thermal stability; and there exists a close relationship between hardness and brittleness of TiC. According to the number of lattice electrons, the differences among the crystals with different structures can be explained qualitatively. Using the 'bond-strengthening factor', the differences of hardness among the crystals with different structures can also be qualitatively explained to some extent.展开更多
THE phenomena of wetting on strengthening phases by liquid matrix metals is significant inmanufacturing metal matrix composites. Many methods have been proposed for improving thewettability of liquid metals on solids,...THE phenomena of wetting on strengthening phases by liquid matrix metals is significant inmanufacturing metal matrix composites. Many methods have been proposed for improving thewettability of liquid metals on solids, which include physical methods and chemical methods.Applying direct current (DC) is one of the physical methods. It has advantages in keeping展开更多
文摘THE brittleness of abrasion-resistant plain white cast iron has strongly hindered its wider application so far. In order to solve this problem, many researchers have made strenuous efforts to spheroidize the carbide in white cast iron. By alloying and inoculating the liquid white cast
基金This work was supported by the National Natural Science Foundation of China (Grant No. 59871025).
文摘The valence electron structure of TiC was calculated by using the empirical electron theory of solids and molecules. The calculated results show that with the increase of temperature the number of common electrons of TiC increases, which indicates that TiC has a good thermal stability; and there exists a close relationship between hardness and brittleness of TiC. According to the number of lattice electrons, the differences among the crystals with different structures can be explained qualitatively. Using the 'bond-strengthening factor', the differences of hardness among the crystals with different structures can also be qualitatively explained to some extent.
文摘THE phenomena of wetting on strengthening phases by liquid matrix metals is significant inmanufacturing metal matrix composites. Many methods have been proposed for improving thewettability of liquid metals on solids, which include physical methods and chemical methods.Applying direct current (DC) is one of the physical methods. It has advantages in keeping
