| 释义 |
ˈRadiometal
Also radiometal.
An alloy consisting largely of nickel and iron in approximately equal proportions and having a high magnetic permeability.
1940Chambers's Techn. Dict. 699/1 Radiometal, an alloy of permalloy type. Contains iron 50%, nickel 45%, and copper 5%. 1941Jrnl. Brit. Inst. Radio Engineers II. 101 A group of metallurgists and electrical technicians concentrated on the problem of high permeability materials and carried out intensive research on alloys with 80%, 50% and about 36% nickel content. The outcome of the work was the commercial introduction of the well known alloys Mumetal (78% Ni), Radiometal (48% Ni) and Rhometal (36% Ni). 1946Nature 13 July 54/2 The stator core consists of radiometal laminations 0·010 in. thick. 1951Electronic Engin. XXIII. 330/1 The smoothing choke is wound on a radiometal core. 1957W. J. John Mod. Electr. Engin. I. iv. 116/2 Radiometal, or Permalloy B, has a saturation of 16,000 gauss and a maximum permeability of 10,000 to 30,000 at H = 0·3 to 0·4 oersted... Composition: nickel 50 per cent, iron 50 per cent. |