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发明公开
CN110724867A 一种ZrO2-Y2O3增强TZM合金及其制备方法、复合粉体及其制备方法 有权

一种ZrO2-Y2O3增强TZM合金及其制备方法、复合粉体及其制备方法
摘要：
本发明属于有色合金技术领域，具体涉及一种ZrO2-Y2O3增强TZM合金及其制备方法，还涉及一种复合粉体及其制备方法。本发明的ZrO2-Y2O3增强TZM合金的制备方法包括以下步骤：将含硝酸锆、硝酸钇的复合溶液采用喷雾的方法与MoO2粉体混合均匀，得混合粉体；然后对混合粉体进行还原处理，得ZrO2-Y2O3/Mo复合粉体；将ZrO2-Y2O3/Mo复合粉体与石墨粉、氢化锆、氢化钛混合均匀后压制成型后烧结，即得。本发明采用液固掺杂的方法引入纳米级的ZrO2以及Y2O3颗粒增强相，增加了TZM合金中纳米级第二相的比例，能有效地阻止晶粒长大，减轻团聚，提高了TZM合金的强度、耐磨性和塑性。
摘要（英）：

The invention belongs to the technical field of nonferrous alloys, and in particular, relates to a ZrO2-Y2O3 reinforced TZM alloy and a preparation method thereof, composite powder and a preparation method thereof. The preparation method of the ZrO2-Y2O3 reinforced TZM alloy comprises the following steps: composite solution containing zirconium nitrate and yttrium nitrate is uniformly mixed with MoO2 powder by adopting a spraying method to obtain mixed powder; the mixed powder is reduced to obtain ZrO2-Y2O3/Mo composite powder; and the ZrO2-Y2O3/Mo composite powder is uniformly mixed with graphite powder, zirconium hydride and titanium hydride for pressing and sintering to obtain the ZrO2-Y2O3 reinforced TZM alloy. Nanoscale ZrO2 and Y2O3 particle reinforcing phases are introduced by adopting a liquid-solid doping method to increase the ratio of nanoscale second phases in the TZM alloy, so that the grain growth can be effectively stopped, the agglomeration is relieved, and the strength, the wear resistance and the plasticity of the TZM alloy are improved.

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