After the 2nd calcium treatment, the distribution of inclusion composition is more concentrated compared with the 1st calcium treatment, and the MgO content decreases further with the inclusion composition very close to CaO Al 2 O 3 system and almost all in liquid region. In order to get a good calcium treatment result, T.[Ca]/T.[O] ratio should be controlled above 0.91, and the ratio between
Antioxidant and antithrombotic study of novel chitosan Previous study has shown that this ratio could produce CNP with a good degree of biodegradability, blood compatibility and stability . 50 mg of chitosan derived from shrimp shells was dispersed into 10 ml of aqueous acetic acid (2% v/v) solution and continuously stirred for 20 min at 900 rpm to obtain a homogeneous solution. 5 ml (0.8% w/v) of
Jul 01, 2010 · The transformation of MgO Al 2 O 3 based inclusions in alloy steel during refining has been studied by industrial trials. Besides Factsage software is used to study the formation and modification of spinel inclusions in alloy steel using calcium treatment during refining process.
Effect of compression temperature on deformation of CaO Mar 01, 2021 · In the current study, inclusion deformation during plain strain compression of solid steel and semi-solid steel was studied using Gleeble HDS-V40 CC-DR and semi-solid simulator. The effect of compression temperature on inclusion deformation was discussed. Mg, Ca, S, and O is shown by Eq. Inclusion evolution during modification of
Inclusion control for clean steel - SlideShareJan 15, 2014 · Ca treatment is commonly used to control the shape and composition of both oxydes and sulphides inclusion in Al-Killed steel. The Ca additions reacts with solid Al2O3 inclusion. Generally Ca. aluminates of lower melting points. Some of the Ca may also react with dissolved sulpher resulting in the formation of Ca or Ca-Mn sulphide inclusion.
In order to study the effect of Ca and sulfur contents on the characteristics of inclusions, industrial experiments using 95CrMo steel were conducted.
Morphology Control for Al 2 O 3 Inclusion Without Ca As can be seen, the equilibrium values of a [Mg] and a [Ca] are ~50 × 10 4 and ~23 × 10 4, respectively. A recent study conducted by Fujii et al. revealed the variation of activity of MA in the solid solution region (Figure 10(a)) as a function of composition. In Eq.
Morphology Study on Inclusion Modifications Using Mg-Ca Jan 01, 2019 · Morphology Study on Inclusion Modifications Using Mg-Ca Treatment in Resulfurized Special Steel Shen, Ping; Fu, Jianxun; Abstract. Publication:Materials. Pub Date:January 2019 DOI:10.3390/ma12020197 Bibcode:2019Mate12..197S full text sources. Publisher
Sulfide morphology modification type Pb-free machine structural free-machining steel was investigated by adding Mg(+Ca). It was observed that Mg(+Ca) additions make the distribution of sulfide Morphology Study on Inclusion Modifications Using MgCa Morphology Study on Inclusion Modifications Using MgCa Treatment in Resulfurized Special Steel Ping Shen, Jianxun Fu; Affiliations Ping Shen State Key Laboratory of Advanced Special Steel; Shanghai Key Laboratory of Advanced Ferrometallurgy; School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China