The structural rearrangement of quenched titanate glasses reheated at T-g was investigated by ESR and IR spectroscopies. Front the ESR observations it is suggested that the structure was readjusted and became more com...The structural rearrangement of quenched titanate glasses reheated at T-g was investigated by ESR and IR spectroscopies. Front the ESR observations it is suggested that the structure was readjusted and became more compact after the heat-treatment. A removal of residual vacancies is related to the diffusion of oxygen ions. The combination of more oxygen with titanium ions to form titanium-oxygen polyhedra and the transformation of boron-oxygen groups are confirmed front IR spectra. Some physical properties are improved after heating.展开更多
Continuous precision casting is an important trend in modern industrialization.Clustering effects in glassforming metallic liquids tremendously influence the properties of rapidly quenched ribbons;therefore,much atten...Continuous precision casting is an important trend in modern industrialization.Clustering effects in glassforming metallic liquids tremendously influence the properties of rapidly quenched ribbons;therefore,much attention has been paid to the study of Fe-based glass-forming melts at high temperatures.Recent investigations of these melts are categorized and reviewed.It is concluded that more efforts are still required to reveal the discipline of amorphization brought about by rapid quenching of Fe-based glass-forming melts.展开更多
文摘The structural rearrangement of quenched titanate glasses reheated at T-g was investigated by ESR and IR spectroscopies. Front the ESR observations it is suggested that the structure was readjusted and became more compact after the heat-treatment. A removal of residual vacancies is related to the diffusion of oxygen ions. The combination of more oxygen with titanium ions to form titanium-oxygen polyhedra and the transformation of boron-oxygen groups are confirmed front IR spectra. Some physical properties are improved after heating.
基金Item Sponsored by National Natural Science Foundation of China(51501043)National Scientific and Technological Support Projects of China(2013BAE08B01)Science and Technology Program of Beijing of China(Z141100003814007)
文摘Continuous precision casting is an important trend in modern industrialization.Clustering effects in glassforming metallic liquids tremendously influence the properties of rapidly quenched ribbons;therefore,much attention has been paid to the study of Fe-based glass-forming melts at high temperatures.Recent investigations of these melts are categorized and reviewed.It is concluded that more efforts are still required to reveal the discipline of amorphization brought about by rapid quenching of Fe-based glass-forming melts.
