The research on tundish metallurgy has focused mainly on taking countermeasures to avoid and remove inclusions and the recent developments on tundish metallurgy were surveyed.The authers'advices for future develop...The research on tundish metallurgy has focused mainly on taking countermeasures to avoid and remove inclusions and the recent developments on tundish metallurgy were surveyed.The authers'advices for future development of tundish metallurgy were given in summary section.展开更多
A common problem for Zn alloys is the trade-off between antibacterial ability and biocompatibility.This paper proposes a strategy to solve this problem by increasing release ratio of Ca^(2+)ions,which is realized by s...A common problem for Zn alloys is the trade-off between antibacterial ability and biocompatibility.This paper proposes a strategy to solve this problem by increasing release ratio of Ca^(2+)ions,which is realized by significant refinement of CaZn13 particles through bottom circulating water-cooled casting(BCWC)and rolling.Compared with conventionally fabricated Zn-0.3Ca alloy,the BCWC-rolled alloy shows higher antibacterial abilities against E.coli and S.aureus,meanwhile much less toxicity to MC3T3-E1 cells.Additionally,plasticity,degradation uniformity,and ability to induce osteogenic differentiation in vitro of the alloy are improved.The elongation up to 49%,which is the highest among Zn alloys with Ca,and is achieved since the sizes of CaZn_(13) particles and Zn grains are small and close.As a result,the long-standing problem of low formability of Zn alloys containing Ca has also been solved due to the elimination of large CaZn_(13) particles.The BCWC-rolled alloy is a promising candidate of making GBR membrane.展开更多
文摘The research on tundish metallurgy has focused mainly on taking countermeasures to avoid and remove inclusions and the recent developments on tundish metallurgy were surveyed.The authers'advices for future development of tundish metallurgy were given in summary section.
基金financially supported by Xiongan New Area Science and Technology Innovation Project(2022XACX0600)the National Natural Science Foundation of China(No.52231010 and No.52071028)Beijing Nova Program(2022 Beijing Nova Program Cross Cooperation Program No.20220484178).
文摘A common problem for Zn alloys is the trade-off between antibacterial ability and biocompatibility.This paper proposes a strategy to solve this problem by increasing release ratio of Ca^(2+)ions,which is realized by significant refinement of CaZn13 particles through bottom circulating water-cooled casting(BCWC)and rolling.Compared with conventionally fabricated Zn-0.3Ca alloy,the BCWC-rolled alloy shows higher antibacterial abilities against E.coli and S.aureus,meanwhile much less toxicity to MC3T3-E1 cells.Additionally,plasticity,degradation uniformity,and ability to induce osteogenic differentiation in vitro of the alloy are improved.The elongation up to 49%,which is the highest among Zn alloys with Ca,and is achieved since the sizes of CaZn_(13) particles and Zn grains are small and close.As a result,the long-standing problem of low formability of Zn alloys containing Ca has also been solved due to the elimination of large CaZn_(13) particles.The BCWC-rolled alloy is a promising candidate of making GBR membrane.
