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muxing

铜虫 (小有名气)

[求助] 请问烧结温度对3Y-TZP的相转变有什么影响? 已有1人参与

我最近使用常规烧结制备一批3Y-TZP,经过XRD测试发现1500摄氏度烧结的样品中含有单斜相的氧化锆,而1450摄氏度烧结的样品中几乎没有单斜相。四方相不是高温相吗?为何烧结温度更高反而出现单斜相了呢?
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songcumt

至尊木虫 (职业作家)


【答案】应助回帖

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muxing: 金币+10, ★★★很有帮助 2020-08-29 15:49:11
可能是温度高了会有Y3+在晶界偏聚,反而不利于稳定相的形成
2楼2020-08-28 23:21:25
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uwen331

木虫 (著名写手)

相变可参考临界相变尺寸概念,温度越高Y越均匀

发自小木虫Android客户端
3楼2020-08-30 06:25:13
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