R. Swadźba, Instytut Metalurgii Żelaza im. St. Staszica
{"title":"铪对NiAl和Ni3Al合金高温氧化的影响","authors":"R. Swadźba, Instytut Metalurgii Żelaza im. St. Staszica","doi":"10.32730/IMZ.0137-9941.18.2.02","DOIUrl":null,"url":null,"abstract":"The results presented in this paper concern the modification of NiAl and Ni3Al alloys with reactive elements that increase their high temperature oxidation resistance. Literature data indicate that even trace additions of Hf to aluminide coatings significantly improve the resistance to oxidation in the range of 1100–1150°C, however the exact mechanism of its influence is not yet known. In order to determine the influence of various additions of Hf on high temperature oxidation of aluminide coatings, cyclic oxidation tests were performed at 1150°C of model NiAl and Ni3Al alloys with different Hf additions – from 0.25 wt.% to 1.5 wt.%. High resolution electron microscopy, as well as chemical composition analysis techniques, were applied to perform a detailed characterisation of the influence of Hf on the substructure, chemical and phase composition in the nano scale of oxide scales formed during high temperature oxidation.","PeriodicalId":331239,"journal":{"name":"Prace Instytutu Metalurgii Żelaza","volume":"26 ","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"INFLUENCE OF HAFNIUM ON HIGH TEMPERATURE OXIDATION OF NiAl AND Ni3Al ALLOYS\",\"authors\":\"R. Swadźba, Instytut Metalurgii Żelaza im. St. Staszica\",\"doi\":\"10.32730/IMZ.0137-9941.18.2.02\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The results presented in this paper concern the modification of NiAl and Ni3Al alloys with reactive elements that increase their high temperature oxidation resistance. Literature data indicate that even trace additions of Hf to aluminide coatings significantly improve the resistance to oxidation in the range of 1100–1150°C, however the exact mechanism of its influence is not yet known. In order to determine the influence of various additions of Hf on high temperature oxidation of aluminide coatings, cyclic oxidation tests were performed at 1150°C of model NiAl and Ni3Al alloys with different Hf additions – from 0.25 wt.% to 1.5 wt.%. High resolution electron microscopy, as well as chemical composition analysis techniques, were applied to perform a detailed characterisation of the influence of Hf on the substructure, chemical and phase composition in the nano scale of oxide scales formed during high temperature oxidation.\",\"PeriodicalId\":331239,\"journal\":{\"name\":\"Prace Instytutu Metalurgii Żelaza\",\"volume\":\"26 \",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Prace Instytutu Metalurgii Żelaza\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.32730/IMZ.0137-9941.18.2.02\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Prace Instytutu Metalurgii Żelaza","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.32730/IMZ.0137-9941.18.2.02","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
INFLUENCE OF HAFNIUM ON HIGH TEMPERATURE OXIDATION OF NiAl AND Ni3Al ALLOYS
The results presented in this paper concern the modification of NiAl and Ni3Al alloys with reactive elements that increase their high temperature oxidation resistance. Literature data indicate that even trace additions of Hf to aluminide coatings significantly improve the resistance to oxidation in the range of 1100–1150°C, however the exact mechanism of its influence is not yet known. In order to determine the influence of various additions of Hf on high temperature oxidation of aluminide coatings, cyclic oxidation tests were performed at 1150°C of model NiAl and Ni3Al alloys with different Hf additions – from 0.25 wt.% to 1.5 wt.%. High resolution electron microscopy, as well as chemical composition analysis techniques, were applied to perform a detailed characterisation of the influence of Hf on the substructure, chemical and phase composition in the nano scale of oxide scales formed during high temperature oxidation.
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