Effect of calcium additive on the kinetics of oxidation of solid lead babbit B(PbSb15Sn10)

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING Metallurgist Pub Date : 2024-10-04 DOI:10.1007/s11015-024-01777-4

I. N. Ganiev, F. K. Khodzhaev, A. H. Odinaev

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Abstract

The paper considers the results of a study on the oxidation kinetics of lead babbit B(PbSb15Sn10) with calcium in a temperature range of 373–473 K. In addition, the resulting oxidation products of alloys and their microstructure are examined. The studies were carried out using the thermogravimetric method in air at atmospheric pressure within the temperature range of 373–473 K. It was found that the oxidation process in the entire studied temperature range can be accurately described by a degree four polynomial. In the experiments, a variation in the oxidation rate was measured over time. The kinetic and energy parameters of the alloy oxidation process were determined. It was found that calcium additives increase the oxidability of the initial alloy B(PbSb15Sn10) in the temperature range of 373–473 K. It was demonstrated that the additives of the alloying component significantly alter the alloy microstructure. X‑ray diffraction analysis revealed that the oxidation products of lead babbit B(PbSb15Sn10) with 1.0 wt % calcium include the following oxides: Pb₂Sn₂O₆; PbO; Sn₂O₄, SnO, Pb_0.866O_{2, Sb2O5}, Ca(Sb₂O₆), and Ca₂Sb.

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钙添加剂对固体巴比特铅 B（PbSb15Sn10）氧化动力学的影响

本文研究了巴比特铅 B（PbSb15Sn10）与钙在 373-473 K 温度范围内的氧化动力学。此外，还研究了由此产生的合金氧化产物及其微观结构。研究在 373-473 K 的温度范围内，使用热重法在大气压下的空气中进行。研究发现，整个研究温度范围内的氧化过程可以用四度多项式来准确描述。在实验中，测量了氧化速率随时间的变化。确定了合金氧化过程的动力学参数和能量参数。实验发现，在 373-473 K 的温度范围内，钙添加剂增加了初始合金 B(PbSb15Sn10)的氧化性。研究表明，合金成分的添加剂会显著改变合金的微观结构。X 射线衍射分析表明，钙含量为 1.0 wt % 的铅巴比特 B（PbSb15Sn10）的氧化产物包括以下氧化物：Pb2Sn2O6、PbO、Sn2O4、SnO、Pb0.866O2、Sb2O5、Ca(Sb2O6) 和 Ca2Sb。

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).