V. I. Kalita, D. I. Komlev, A. A. Radyuk, V. F. Shamraj, A. B. Mikhajlova, B. A. Rumyancev
{"title":"The Study of the Content of Oxygen and Nitrogen in Nickel-Based Plasma Coatings","authors":"V. I. Kalita, D. I. Komlev, A. A. Radyuk, V. F. Shamraj, A. B. Mikhajlova, B. A. Rumyancev","doi":"10.1134/s2075113324020242","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The content of oxygen and nitrogen in nickel-based powders and plasma coatings made of them has been studied. The Ni-based sprayed materials were divided into four groups according to the mechanism of their interaction with oxygen: (i) Ni; (ii) alloys alloyed with Cr; (iii) alloys additionally alloyed with Al; and (iv) alloys with more complex alloying with Cr, C, B, and Si, which actively interact with oxygen, including the formation of gaseous oxides. Alloying with 20% Cr (hereinafter in wt %) reduces the oxygen content in the coating by 35%, alloying with 17% Cr–10% Al reduces the oxygen content by 57%, and more complex alloying with 13.5% Cr–2.7% Si–1.65% B–0.36% C reduces the oxygen content by 92%. Increasing the plasma jet power increases the oxygen content in the Ni–20% Cr coating from 0.55 to 1.6%. Increasing the plasma jet power and preheating a substrate before spraying results in a limited increase in the oxygen content in the Ni–17% Cr–10% Al–1% Y and Ni–15% Cr–4% Fe–0.8% C–4.1% Si–3.1% B coatings using a plasma nozzle, which eliminates the thermal effects of the plasma jet and restricts the supply of atmospheric oxygen in the formation zone of the coating on the substrate. The Ni–17% Cr–10% Al–1% Y coating sprayed with the nozzle contains 0.48% O and 0.14% N instead of 2.31% O and 0.37% N when sprayed without the nozzle. An increase in the content of oxygen and nitrogen in the Ni, Ni–20% Cr, and Ni–40% Cr coatings together with the formation of a liquid-hardened structure in these coatings determines an increase in microhardness relative to that of the powder by 1.6–1.9 times.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials: Applied Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1134/s2075113324020242","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The content of oxygen and nitrogen in nickel-based powders and plasma coatings made of them has been studied. The Ni-based sprayed materials were divided into four groups according to the mechanism of their interaction with oxygen: (i) Ni; (ii) alloys alloyed with Cr; (iii) alloys additionally alloyed with Al; and (iv) alloys with more complex alloying with Cr, C, B, and Si, which actively interact with oxygen, including the formation of gaseous oxides. Alloying with 20% Cr (hereinafter in wt %) reduces the oxygen content in the coating by 35%, alloying with 17% Cr–10% Al reduces the oxygen content by 57%, and more complex alloying with 13.5% Cr–2.7% Si–1.65% B–0.36% C reduces the oxygen content by 92%. Increasing the plasma jet power increases the oxygen content in the Ni–20% Cr coating from 0.55 to 1.6%. Increasing the plasma jet power and preheating a substrate before spraying results in a limited increase in the oxygen content in the Ni–17% Cr–10% Al–1% Y and Ni–15% Cr–4% Fe–0.8% C–4.1% Si–3.1% B coatings using a plasma nozzle, which eliminates the thermal effects of the plasma jet and restricts the supply of atmospheric oxygen in the formation zone of the coating on the substrate. The Ni–17% Cr–10% Al–1% Y coating sprayed with the nozzle contains 0.48% O and 0.14% N instead of 2.31% O and 0.37% N when sprayed without the nozzle. An increase in the content of oxygen and nitrogen in the Ni, Ni–20% Cr, and Ni–40% Cr coatings together with the formation of a liquid-hardened structure in these coatings determines an increase in microhardness relative to that of the powder by 1.6–1.9 times.
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.