Non-magnetic metallic

A method has been worked out for eddy current testing of surfaces and surface cracks or corrosion under dielectric or non-magnetic metal layer of up to 10 mm. The method is based on excitation of eddy currents by a coil with U - type core and information reading by a sensitive gradientometric element located on a axis of symmetry of the core (fig. 1). 

The application of fundamentally new ECT (Russia patent Jf 2063025) has made it possible to provide high-efficiency defect control accompanied by detecting both small surface defects and more rough under-surface defects under non-magnetic metal layer of 7 mm thick, or surface defects under protection coatings, dye, corrosion, hermetic and other type of layer of 10 mm thick. 

High sensitivity for both small surface cracks and bigger inner fractures and corrosive defects under the layer of a non - magnetic metal to 7 mm, also through the skins. 

An important application of the HMT is the test for ferrous inclusions in high pressure turbine disks made from a non-magnetic metal alloy. On principle, such ferrous inclusions can be introduced during the manufacturing process and, if present, they can be the origin of cracks in these most critical parts. Therefore such tests are stringent necessary. 

In this conslmction the conductors of each phase tire housed in a separate non-magnetic metallic enclosure to isolate them completely from each other with the following ad antages ... 

In comparison, FeS and CoS are antiferromagnetic metals at all temperatures. The substitution of Se or especially Te for S, by increasing the hybridization, stabilizes the non-magnetic metallic form. 

An effect of external factors on giant magnetoresistance (GMR) for asymmetric layer structure metal/polymer/non-magnetic metal was investigated. The magnetostriction, galvanomagnetic effects and instability of contacts are not the reasons for GMR appearance. The conclusion on the injective nature of the GMR effect was drawn. 

The aim of this work was to investigate the influence of external factors in magnetic field on electron transport in the asymmetric layer structure magnetic metal/polymer/non-magnetic metal type. We considered the following factors ... 

Magnetic electrode has been made of polycrystalline Ni plate. Copper has been used as non-magnetic metal and second electrode. Polymer film has been made by means of the spin-coating technique. The special semiconductor... 

Early attempts to observe magnetic splitting involved the use of external fields on non-magnetic metals, but gave poor results because of lack of resolution [35,36]. The various estimates [36-44] of the excited-state magnetic moment made since then are given in Table 14.2, and were calculated assum-... 

The temperature dependence of the resistivity of amorphous non-magnetic metals has been studied by many authors. The most popular theory is still Ziman s theory for the resistivity of liquid metals and several authors have extended this theory to include a dynamic structure factor. Cote and Meisel (1979) used an isotropic Debye spectrum for the phonons to calculate the dynamic structure factor. They obtained a quadratic dependence of the resistivity on temperature at low temperatures. Frobose and Jackie (1977) used both a Debye model and a model of uncorrelated Einstein oscillators in conjunction with a dynamic structure factor to analyse the resistivity. They found that the second model leads to a satisfactory fit for the temperature dependence of the resistivity of CuSn alloys for T 10 K. Ohkawa and Yosida (1977) predict a T ... 

The technique using non-magnetic metallic single crystals in NMR was long ago introduced by Jones and Williams (1962), when they analysed the anisotropy of the nuclear magnetic resonance in white tin. It is only 14 years ago, however, since the techniques appropriate for the NMR of ferromagnetically ordered metallic single crystals were introduced by Fekete et al. (1975). However, the requirements for the sample preparation are relatively severe. Otherwise the full... 

For a comprehensive earlier review of the physical properties, compositions and crystal structures of intermetallic compounds formed between rare-earth elements and non-magnetic metals, including NMR applications, see Buschow (1979). 

Magnetic properties of amorphous alloys composed of rare earths and non-magnetic metals... 

Ferrer et al. (1978) found excellent agreement between the RAM model description and the high-field magnetization curves obtained by various authors on amorphous alloys in which rare earth elements are combined with non-magnetic metals. Values of the parameters D and obtained by fitting the experimental results obtained by Boucher (1977a,b), Boucher and Barbara (1979) and Ferrer et al. (1978), have been collected in table 3. 

---