The investigation on toxicity of stainless steel has been reviewed. Many countries have established laws to guarantee food safety of stainless steel containers. The development of food safety standards with respect to...The investigation on toxicity of stainless steel has been reviewed. Many countries have established laws to guarantee food safety of stainless steel containers. The development of food safety standards with respect to the use of stainless steels in China has been analyzed. Influence of stainless steel grades and food ingredients on the release of metal ions has been reviewed briefly. The effect of surface condition on the release of metal ions has also been analyzed. Finally, the food safety issues with respect to the use of stainless steel products have been presented systematically.展开更多
Ti6Al4V alloy‒CoCrMo alloy pair is commonly applied for modular head‒neck interfaces for artificial hip joint.Unfortunately,the fretting corrosion damage at this interface seriously restricts its lifespan.This work st...Ti6Al4V alloy‒CoCrMo alloy pair is commonly applied for modular head‒neck interfaces for artificial hip joint.Unfortunately,the fretting corrosion damage at this interface seriously restricts its lifespan.This work studied the fretting corrosion of Ti6Al4V‒CoCrMo pair in calf serum solution.We established this material pair’s running condition fretting map(RCFM)regarding load and displacement,and revealed the damage mechanism of this material pair in various fretting regimes,namely partial slip regime(PSR),mixed fretting regime(MFR),and gross slip regime(GSR).The damage mechanism of Ti6Al4V alloy was mainly abrasive wear induced by CoCrMo alloy and tribocorrosion.Adhesive wear(material transfer)also existed in MFR.The damage mechanism of CoCrMo alloy was mainly abrasive wear induced by metal oxides and tribocorrosion in GSR and MFR,while no apparent damage in PSR.Furthermore,a dense composite material layer with high hardness was formed in the middle contacting area in GSR,which reduced the corrosion and wear of Ti alloys and exacerbated damage to Co alloys.Finally,the ion concentration maps for Ti and Co ions were constructed,which displayed the transition in the amount of released Ti and Co ions under different displacements and loads.展开更多
文摘The investigation on toxicity of stainless steel has been reviewed. Many countries have established laws to guarantee food safety of stainless steel containers. The development of food safety standards with respect to the use of stainless steels in China has been analyzed. Influence of stainless steel grades and food ingredients on the release of metal ions has been reviewed briefly. The effect of surface condition on the release of metal ions has also been analyzed. Finally, the food safety issues with respect to the use of stainless steel products have been presented systematically.
基金supported by the National Natural Science Foundation of China(Nos.52035012 and 52275215)the Natural Science Foundation of Sichuan Province(No.2022NSFSC1940).
文摘Ti6Al4V alloy‒CoCrMo alloy pair is commonly applied for modular head‒neck interfaces for artificial hip joint.Unfortunately,the fretting corrosion damage at this interface seriously restricts its lifespan.This work studied the fretting corrosion of Ti6Al4V‒CoCrMo pair in calf serum solution.We established this material pair’s running condition fretting map(RCFM)regarding load and displacement,and revealed the damage mechanism of this material pair in various fretting regimes,namely partial slip regime(PSR),mixed fretting regime(MFR),and gross slip regime(GSR).The damage mechanism of Ti6Al4V alloy was mainly abrasive wear induced by CoCrMo alloy and tribocorrosion.Adhesive wear(material transfer)also existed in MFR.The damage mechanism of CoCrMo alloy was mainly abrasive wear induced by metal oxides and tribocorrosion in GSR and MFR,while no apparent damage in PSR.Furthermore,a dense composite material layer with high hardness was formed in the middle contacting area in GSR,which reduced the corrosion and wear of Ti alloys and exacerbated damage to Co alloys.Finally,the ion concentration maps for Ti and Co ions were constructed,which displayed the transition in the amount of released Ti and Co ions under different displacements and loads.
