{"title":"PAr = 0.1 兆帕时镍熔体中镨和镝与氧的相互作用及非金属夹杂物分析","authors":"V. T. Burtsev, E. B. Chabina, S. N. Anuchkin","doi":"10.1134/s2075113324700278","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Interaction of Pr/Dy with oxygen in nickel melts at <i>P</i><sub>Ar</sub> = 0.1 MPa and constant temperature was studied using the EMF instantaneous fixing method using a Mo[Cr/Cr<sub>2</sub>O<sub>3</sub>//ZrO<sub>2</sub>(MgO)//O(Ni<sub>l</sub>)]Mo cell and certified sensors. Dependences <i>a</i><sub>[O]</sub> = <i>f</i>[Pr/Dy, %] expressed in the form of logarithmic equations made it possible to compare them with each other in the concentration range of 0.001–0.2 wt % of each deoxidizer and determine that the deoxidizing ability of Pr is 1.7 times higher compared to Dy. The activity of oxygen <i>a</i><sub>[O]</sub> in Ni–O–Al–(Pr/Dy) melts was calculated in comparison with Al at a concentration of 0.05 wt % of elements and its sevenfold decrease was shown for the first deoxidizer and elevenfold for the second. The morphology of nonmetallic inclusions in metallographic sections of Ni–O–Pr/Dy alloys has been studied, indicating that the inclusions are located along grain boundaries and have different configurations and a complex heterophase composition. Analysis of nonmetallic inclusions with the maximum content of deoxidizing element proved the existence of Pr/Dy oxygen compounds, which confirmed the data of thermodynamic and mass spectrometric studies. The average content of Zr in nonmetallic inclusions during the deoxidation of Pr is two times higher than in experiments during the deoxidation of Dy, which indicates the interaction of Pr/Dy with the EMF ZrO<sub>2</sub> sensor and the preferential interaction of Pr compared to Dy and correlates with the data on the determination of <i>a</i><sub>[O]</sub>.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Interaction of Praseodymium and Dysprosium with Oxygen in Nickel Melts at PAr = 0.1 MPa and Analysis of Nonmetallic Inclusions\",\"authors\":\"V. T. Burtsev, E. B. Chabina, S. N. Anuchkin\",\"doi\":\"10.1134/s2075113324700278\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>Interaction of Pr/Dy with oxygen in nickel melts at <i>P</i><sub>Ar</sub> = 0.1 MPa and constant temperature was studied using the EMF instantaneous fixing method using a Mo[Cr/Cr<sub>2</sub>O<sub>3</sub>//ZrO<sub>2</sub>(MgO)//O(Ni<sub>l</sub>)]Mo cell and certified sensors. Dependences <i>a</i><sub>[O]</sub> = <i>f</i>[Pr/Dy, %] expressed in the form of logarithmic equations made it possible to compare them with each other in the concentration range of 0.001–0.2 wt % of each deoxidizer and determine that the deoxidizing ability of Pr is 1.7 times higher compared to Dy. The activity of oxygen <i>a</i><sub>[O]</sub> in Ni–O–Al–(Pr/Dy) melts was calculated in comparison with Al at a concentration of 0.05 wt % of elements and its sevenfold decrease was shown for the first deoxidizer and elevenfold for the second. The morphology of nonmetallic inclusions in metallographic sections of Ni–O–Pr/Dy alloys has been studied, indicating that the inclusions are located along grain boundaries and have different configurations and a complex heterophase composition. Analysis of nonmetallic inclusions with the maximum content of deoxidizing element proved the existence of Pr/Dy oxygen compounds, which confirmed the data of thermodynamic and mass spectrometric studies. 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引用次数: 0
摘要
摘要在 PAr = 0.1 MPa 和恒温条件下，利用电磁场瞬时固定法，使用 Mo[Cr/Cr2O3//ZrO2(MgO)//O(Nil)]Mo 电池和经认证的传感器研究了镍熔体中 Pr/Dy 与氧气的相互作用。a[O] = f [Pr/Dy，%]以对数方程的形式表示，因此可以在每种脱氧剂的浓度为 0.001-0.2 wt % 的范围内对它们进行比较，并确定 Pr 的脱氧能力是 Dy 的 1.7 倍。在元素浓度为 0.05 wt % 时，与 Al 相比，计算了 Ni-O-Al-(Pr/Dy) 熔体中氧 a[O] 的活性，结果显示第一种脱氧剂的活性降低了 7 倍，第二种脱氧剂降低了 11 倍。对 Ni-O-Pr/Dy 合金金相切片中非金属夹杂物的形态进行了研究，结果表明夹杂物位于晶界沿线，具有不同的构型和复杂的异相成分。对脱氧元素含量最高的非金属夹杂物的分析证明了 Pr/Dy 氧化合物的存在，这也证实了热力学和质谱研究的数据。在 Pr 的脱氧过程中，非金属夹杂物中 Zr 的平均含量比在 Dy 的脱氧实验中高两倍，这表明 Pr/Dy 与 EMF ZrO2 传感器的相互作用，以及与 Dy 相比，Pr 的优先相互作用，并与测定 a[O] 的数据相关。
Interaction of Praseodymium and Dysprosium with Oxygen in Nickel Melts at PAr = 0.1 MPa and Analysis of Nonmetallic Inclusions
Abstract
Interaction of Pr/Dy with oxygen in nickel melts at PAr = 0.1 MPa and constant temperature was studied using the EMF instantaneous fixing method using a Mo[Cr/Cr2O3//ZrO2(MgO)//O(Nil)]Mo cell and certified sensors. Dependences a[O] = f[Pr/Dy, %] expressed in the form of logarithmic equations made it possible to compare them with each other in the concentration range of 0.001–0.2 wt % of each deoxidizer and determine that the deoxidizing ability of Pr is 1.7 times higher compared to Dy. The activity of oxygen a[O] in Ni–O–Al–(Pr/Dy) melts was calculated in comparison with Al at a concentration of 0.05 wt % of elements and its sevenfold decrease was shown for the first deoxidizer and elevenfold for the second. The morphology of nonmetallic inclusions in metallographic sections of Ni–O–Pr/Dy alloys has been studied, indicating that the inclusions are located along grain boundaries and have different configurations and a complex heterophase composition. Analysis of nonmetallic inclusions with the maximum content of deoxidizing element proved the existence of Pr/Dy oxygen compounds, which confirmed the data of thermodynamic and mass spectrometric studies. The average content of Zr in nonmetallic inclusions during the deoxidation of Pr is two times higher than in experiments during the deoxidation of Dy, which indicates the interaction of Pr/Dy with the EMF ZrO2 sensor and the preferential interaction of Pr compared to Dy and correlates with the data on the determination of a[O].
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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