发明名称 |
Process for making metal alloys for obtaining a homogenous powder of oxides of said metals and their applications for obtaining semi-conductors and super-conductors. |
摘要 |
<p>This process consists, after having placed the various chosen metals in a crucible (1c), in causing melting of the said metals under a neutral or reducing atmosphere while stirring the liquid with a view to homogenising it, in recovering the liquid alloy, in pulverising (spraying) the alloy obtained in the form of a powder of specific particle size, in which each of the particles is homogeneous, and in oxidising the said particles. It applies to the manufacture of semiconducting ceramics of varistor type based on zinc oxide and to the manufacture of superconducting products or of thermistors with a positive or negative thermal coefficient (heat coefficient). <IMAGE></p> |
申请公布号 |
EP0580912(A1) |
申请公布日期 |
1994.02.02 |
申请号 |
EP19920420259 |
申请日期 |
1992.07.31 |
申请人 |
FERRAZ SOCIETE ANONYME |
发明人 |
MARCHAND, ALAIN REMY;BUCHER, OLIVIER;DELALU, HENRI;MARICHY, GERARD;COUNIOUX, JEAN-JACQUES |
分类号 |
B22F9/04;B22F1/00;B22F9/08;C01B13/32;C01B31/30;C01B35/04;C01G9/02;C01G9/03;C04B35/626;C22B19/34;C23C8/12;(IPC1-7):C01B13/32 |
主分类号 |
B22F9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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