Preparation method and application of tissue-controllable ultrahigh-purity cobalt plate
A pure cobalt plate, ultra-high technology, applied in the field of preparation of ultra-high-purity cobalt plate, can solve the problems of uneven grain size distribution, low β-Co phase content, substandard magnetic permeability, etc., and achieve billet substructure. The effect of uniform distribution of defects, elimination of ingot shrinkage and uniform internal structure
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Embodiment 1
[0040]This embodiment provides a method for preparing a tissue-controllable ultra-high-purity cobalt target, including the following steps:
[0041] The cobalt powder (purity is 99.997%) is subjected to vacuum vertical melting after cold isostatic pressing under 200MPa pressure. The vertical melting temperature is 1320°C and the vacuum degree is 10 -4 Pa; put the vertical molten cobalt ingot in a high vacuum of 10 -4 Melting in a Pa electron beam melting furnace, the melting temperature is 1580°C, after cooling, the ingot is again placed in a high vacuum -4 Melting in a Pa electron beam melting furnace at a melting temperature of 1580°C (each melting time is 0.5 hours); the obtained high-density ingot is covered with stainless steel in an argon chamber; the wrapped ingot is heated to 950°C and kept warm For 1.5 hours, make the axial direction of the billet parallel to the direction of the forging force, and carry out two forging deformations, in which the deformation of the f...
Embodiment 2
[0058] This embodiment provides a method for preparing a tissue-controllable ultra-high-purity cobalt target, including the following steps:
[0059] The cobalt powder (purity is 99.997%) is subjected to vacuum vertical melting after cold isostatic pressing under 200MPa pressure. The vertical melting temperature is 1320°C and the vacuum degree is 10 -4 Pa; put the vertical molten cobalt ingot in a high vacuum of 10 -4 Melting in a Pa electron beam melting furnace, the melting temperature is 1580°C, after cooling, the ingot is again placed in a high vacuum -4 Melting in a Pa electron beam melting furnace at a melting temperature of 1580°C (each melting time is 0.5 hours); the obtained high-density ingot is covered with stainless steel in an argon chamber; the wrapped ingot is heated to 950°C and kept warm For 1.5 hours, make the axial direction of the billet parallel to the direction of the forging force, and carry out two forging deformations, in which the deformation of the ...
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