| 摘要 |
PCT No. PCT/AT88/00002 Sec. 371 Date Sep. 27, 1988 Sec. 102(e) Date Sep. 27, 1988 PCT Filed Jan. 26, 1988 PCT Pub. No. WO88/05830 PCT Pub. Date Aug. 11, 1988.A creep-resistant alloy having a tiered structural arrangement of one or several refractory metals Mo, W, Nb, Ta, V, Cr containing certain doping agents, as well as a process for producing the same. The special doping agents are compounds and/or mixed phases of such compounds selected from the group of oxides, nitrides, carbides, borides, silicates or aluminates having a melting point higher than 1500 DEG C. The size of their grains is </=1.5 mu m, their proportion in the alloy is comprised between 0.005 and 10% by weight. Unlike in the known state of the art, the use of porassium as doping agent is avoided in this alloy. A good reproducible consolidation and in particular high densities during sintering can thus be obtained. Furthermore, this alloy has better ambient temperature, heat and creep resistance properties than known alloys of refractory metal with a tiered structual arrangement.
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