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首页> 外文期刊>Transactions of Nonferrous Metals Society of China >Denitrogenation and desulphurization during vacuum induction melting refining Ni-base superalloy
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Denitrogenation and desulphurization during vacuum induction melting refining Ni-base superalloy

机译：真空感应熔炼镍基高温合金的脱氮脱硫

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摘要

The denitrogenation and desulphurization behavior during vacuum induction melting (VIM) refining Ni-base superalloy using CaO crucible was studied. It has been found that the desulphurization process did not occur by only using CaO crucible. Combining with the results of XRD and composition analysis, the desulphurization mechanism of CaO crucible was proposed. Al addition limits effect on denitrogenation, but it is very important for desulphurization. Ti addition has adverse effect on denitrogenation. The increase of vacuum is a powerful measurement to accelerate the denitrogenation process.
机译：研究了使用CaO坩埚在真空感应熔炼（VIM）精炼镍基高温合金过程中的脱氮和脱硫行为。已经发现，仅使用CaO坩埚并没有发生脱硫过程。结合X射线衍射结果和组成分析，提出了CaO坩埚的脱硫机理。 Al的添加限制了对脱氮的作用，但是这对于脱硫非常重要。钛的添加对脱氮有不利影响。真空度的增加是加速脱氮过程的有力手段。

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