Co-Fe-V系合金の熱膨脹，剛性率およびその温度係数におよぼすNi添加の影響について（第2報）20および30%のNiを含む合金の場合

Abstract

The influence of an addition of nickel on the thermal expansion, the rigidity modulus and its temperature coefficient of the alloys of cobalt, iron and vanadium has been determined with the alloys containing 20 and 30 per cent of nickel. The relations between those properties of nickel-added alloys and the concentrations are qualitatively almost similar to those in the case of the ternary alloys of cobalt, iron and vanadium. The addition of nickel affects the coefficient of thermal expansion and the temperature coefficient of the rigidity modulus of the ternary alloys, as if cobalt can be substituted by nickel; that is, the compositions, at which the thermal expansion coefficient shows the minimum value and the temperature coefficient of rigidity modulus the positive maximum, shift to the side of low cobalt content with the addition of nickel. And, when nickel is added, the concentration range having the positive temperature coefficient of the rigidity modulus becomes wider and the slope of the latter to the concentration smaller.