Phase structure of sputtered Ta coating in the negative glow space and LPH effect were explored.The whole coating/substrate system is substrate→physically gas-absorbed Fe surface→oxygen-enriched TaOx layer→amorphou...Phase structure of sputtered Ta coating in the negative glow space and LPH effect were explored.The whole coating/substrate system is substrate→physically gas-absorbed Fe surface→oxygen-enriched TaOx layer→amorphous Ta→αandβdual phase→singleαphase.After LPH course,micro structure of Ta coating shows intact,only a few cracks emerge after 100 laser pulses,exhibiting thin HAZ but thick Fe/Ta ICZ,without martensitic transformation.For the electrodeposited Cr coating,continuous thermal stresses produce many extra micro-crack,substrate oxidation and martensitic transformation,leading to crack propagations and final bulk delamination,without any ICZ.展开更多
As the President Emeritus of ISZS,I am delighted to congratulate the International Congress of Zoology(ICZ)upon reaching its 135th anniversary and to celebrate the 20th anniversary of the ISZS.I sincerely wish both th...As the President Emeritus of ISZS,I am delighted to congratulate the International Congress of Zoology(ICZ)upon reaching its 135th anniversary and to celebrate the 20th anniversary of the ISZS.I sincerely wish both the Congress and the Society a bright future.展开更多
基金financial support of the project from the National Natural Science Foundation of China(No.51701223)。
文摘Phase structure of sputtered Ta coating in the negative glow space and LPH effect were explored.The whole coating/substrate system is substrate→physically gas-absorbed Fe surface→oxygen-enriched TaOx layer→amorphous Ta→αandβdual phase→singleαphase.After LPH course,micro structure of Ta coating shows intact,only a few cracks emerge after 100 laser pulses,exhibiting thin HAZ but thick Fe/Ta ICZ,without martensitic transformation.For the electrodeposited Cr coating,continuous thermal stresses produce many extra micro-crack,substrate oxidation and martensitic transformation,leading to crack propagations and final bulk delamination,without any ICZ.
文摘As the President Emeritus of ISZS,I am delighted to congratulate the International Congress of Zoology(ICZ)upon reaching its 135th anniversary and to celebrate the 20th anniversary of the ISZS.I sincerely wish both the Congress and the Society a bright future.
