A number of short-lived radioactive isotopes, which existed in the early solar system but are now extinct (e.g., Al (t1/2 = 0.74 Ma) Mg, Mn (t1/2 = 3.7 Ma) Cr, Hf (t1/2 = 9 Ma) W, Sm (t1/2 = 103 Ma) Nd), have proven useful for dating the relative ages of meteorites. Based on the ratio of the stable daughter isotope to a proxy isotope for the parent element, this method only provides relative ag...

In connection with the production of 46.2 min Mn via the Cr(d, n)-process, several separation techniques such as ion exchange chromatography, solid phase extraction, liquid–liquid extraction and co-precipitation have been investigated; the aim was to separate no-carrier-added radiomanganese from the bulk target chromium. Among the separation systems ∗MnII/CrIII , ∗MnII/CrVI and ∗MnIV/CrVI, the ...

To quantitatively evaluate the three-dimensional lamellar curvature in pearlitic steel, crystallographic orientation rotation of ferrite and cementite was analyzed using scanning electron microscopy backscattering diffraction. In hypereutectoid steel containing 0.92% C, 0.30% Mn, 0.20% Si, 0.19% Cr, ferrite–cementite interfaces some colonies were confirmed to match well with those having freque...

Nowadays, heavy metal pollution has become a serious environmental problem on global scale. The heavy metals are non-biodegradable in nature, which can easily accumulate in the organisms of lower trophic level, and enter to the human body system through food chain. From this backdrop, the present experiment highlighted the effect of three heavy metals (Cr, Pb, and Mn) in different concentration...

This paper reviews the previous literature on alloy composition design of low-density steel (LDS), focusing effect Al, Mn, Ni, and other elements formation matrix second phase, provides classification. The microstructure LDS after processing includes structure, к-carbide, B2 (FeAl, NiAl, or MnAl) phase ferritic LDS, austenitic dual-phase LDS. influence corrosion resistance is derived from addit...

Evaporation properties of Monel and stainless-steel alloy materials that are widely applied in microwave vacuum electron devices have been studied by time-of-flight mass spectrometry (ToFMS) as their evaporants has an immediate impact on lifetime reliability. The composition sizes stainless steel determined. Minor evaporation Mn, Cu, Cr occurred at ∼800°C, which is much lower than the melting p...

Implantation of Mn or Cr at doses of 3–5 10 cm 2 into Si-doped Al0:24Ga0:76P epilayers on GaP substrates produced ferromagnetic ordering at temperatures up to 300 K. The results were similar to those obtained previously in p-type AlGaP(C), indicating that both electron and hole-doped AlGaP can exhibit ferromagnetism. In addition, the AlGaP results are similar to those for GaP so the magnitude o...

The title compound, [Mn(C(3)H(7)NO)(6)][Cr(NCS)(5)(C(3)H(7)NO)], was obtained unintentionally as a product of an attempted synthesis of heterometallic complexes based on Reineckes anion using manganese powder, Reineckes salt and 1-(2-hy-droxy-eth-yl)tetra-zole as starting materials. The crystal structure of the complex consists of an [Mn(dmf)(6)](2+) cation and a [Cr(NCS)(5)(dmf)](2-) anion (dm...