Effects of the Special Heat-treatment on Permalloys

Tomita, Sadami

doi:10.1143/jpsj.16.393

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The coordination of amino acid and acetic acid ligands is indicated by the shift in the stretching vibrations v (COO-) and v (NH/NH2) compared to free amino acid/acetic acid (Sastry et al 1994a). The chemical analysis of peroxo oxygen atoms, and valency considerations also suggests that amino acids function as deprotonated univalent anions and the observed IR bands are in accordance with those reported for the corresponding glycylglycinates (Boas et al 1969), glycinates (Tomita 1961;Butcher et a11976) and acetates (Ei-ichiro Ochia 1973). The coordination of water molecule is identified by v(H20) bands at 3390, 3460 and 3400 cm -~ for 1-3 respectively.…”

Section: Resultssupporting

confidence: 82%

Mixed metal zinc (II)-molybdenum (VI) peroxo complexes containing some amino acids and acetic acid

Sastry

Gupta

1997

Proc. Indian Acad. Sci. (Chem. Sci.)

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A facile synthesis of the title complexes which involve glycylglyeine (Gg) glycine (Gly) and acetic acid (HAt) as ligands is reported. Reaction of equimolar mixtures of zinc and molybdic acid (MoO3-H20) with Gg, or Gly or Ac, in excess hydrogen peroxide (H202) at ambient conditions, results in the formation of novel mixed metal complexes having the general formula, [Zn, Mo(O)2 (O22-)(L)2(H20)2], (L = Gg-or Gly-or Ac-). These new complexes have been characterised by elemental and thermogravimetric analyses, IR and electronic spectra. It is of interest to note that while heteronuclear peroxo complexes are quickly formed, the corresponding homonuclear Zn complexes could not be obtained.Keywords. Peroxoamino acid complexes; zinc (II)-molybdenum (VI) heteronuclear complexes; peroxo acetic acid complexes; hydrogen peroxide-amino acid interactions.

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Section: Resultssupporting

confidence: 82%

Mixed metal zinc (II)-molybdenum (VI) peroxo complexes containing some amino acids and acetic acid

Sastry

Gupta

1997

Proc. Indian Acad. Sci. (Chem. Sci.)

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“…Crystal Structure of Model Complexes. From the model compounds listed in Table 2, only copper(II) complexes with β-alaninate have been structurally characterized, namely [Cu(β-Ala) 2 (H 2 O) 2 ]‚4H 2 O, 35 [Cu(β-Ala) 2 ]‚4H 2 O, 36 and [Cu(β-Ala) 2 ]. 37 Despite different coordination polyhedra in these complexes (bipyramid 4+2 or square planar 4) and different hydrate composition, the geometry of the main structural fragment Cu(β-Ala) 2 is quite similar.…”

Section: Ph Potentiometric Titrationmentioning

confidence: 99%

“…37 Despite different coordination polyhedra in these complexes (bipyramid 4+2 or square planar 4) and different hydrate composition, the geometry of the main structural fragment Cu(β-Ala) 2 is quite similar. Two β-alaninate ligands are trans coordinated to each other forming an approximate square around the metal; the apical coordination sites being occupied by water molecules 35,36 or by carbonyl oxygen atoms of neighboring complexes. 36 In contrast, no information is available about the structures of metal complexes of Idp or N-Alk-Idp ligands, which can be considered as models for metal complexation of N,N-di-(2-carboxyethyl)-D-glucosamine (Idp-glucan) residue of CEchitosan.…”

Section: Ph Potentiometric Titrationmentioning

confidence: 99%

Complexation Models of N-(2-Carboxyethyl)chitosans with Copper(II) Ions

et al. 2004

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The copper(II) complex formation equilibria of N-(2-carboxyethyl)chitosans with three different degrees of substitution (DS = 0.42, 0.92, and 1.61) were studied in aqueous solution by pH-potentiometric and UV-spectrophotometric techniques. It was demonstrated that the complexation model of CE-chitosans depends on DS: the [Cu(Glc-NR(2))(2)] complexes are predominant for two lower substituted samples ("bridge model", log beta(12) = 10.06 and 11.6, respectively), whereas the increase of DS leads to formation mainly of the [Cu(Glc-NR(2))] complexes ("pendant model", log beta(11) = 6.41). As a model for copper complexation with a disubstituted residue of CE-chitosan, the complex of N-methyliminodipropionate [CuMidp(H(2)O)].(H(2)O) was synthesized and structurally characterized by XRD. The unit cell consists of two crystallographically nonequivalent Cu atoms having slightly distorted square pyramidal coordination; Midp constitutes the basal plane of the pyramid and acts as a tetradentate NO(3) chelate-bridging ligand by the formation of two six-membered chelate rings (average Cu-O 1.99 A, Cu-N 2.04 A) and a bridge via carbonyl O atom (average Cu-O 1.99 A), an apical position is occupied by a water molecule (average Cu-Ow 2.30 A).

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“…7) A thermally decomposed gas generates mainly in the film boiling phase, which consists of hydrocarbons when the quenchant is oil and water vapor when it is water. 8) These are illustrated in Fig.…”

Section: The Effect Of the Quenchantsmentioning

confidence: 99%

Hydrogen Absorption and Desorption of Steel in the High Strength Bolt Manufacturing

Tada¹,

Kikuchi²,

Tomita³

et al. 2012

ISIJ Int.

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It is needless to say by now that delayed fracture is an intrinsic issue in high strength bolt steels. Since hydrogen absorption of bolt steels in galvanizing must be taken into account besides the absorption from the environment of bolt usage, baking is integrated within the manufacturing process of galvanized bolts in order to decrease the absorbed hydrogen. But there are processes in bolt manufacturing other than galvanizing in which the hydrogen absorption is assumed to take place. The authors investigated the effect of each manufacturing process on the amount of the absorbed hydrogen in bolt steels.

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Effects of the Special Heat-treatment on Permalloys

Cited by 4 publications

References 3 publications

Mixed metal zinc (II)-molybdenum (VI) peroxo complexes containing some amino acids and acetic acid

Mixed metal zinc (II)-molybdenum (VI) peroxo complexes containing some amino acids and acetic acid

Complexation Models of N-(2-Carboxyethyl)chitosans with Copper(II) Ions

Hydrogen Absorption and Desorption of Steel in the High Strength Bolt Manufacturing

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