{"title":"一种新型高性价比非晶复合涂层的制备与性能研究","authors":"Shang Junchao , Liang Xiubing , Chen Yongxiong , Xu Binshi , Cao Wei","doi":"10.1016/S1875-5372(18)30222-4","DOIUrl":null,"url":null,"abstract":"<div><p>A NiFeBSiNb amorphous/nanocrystalline composite coating was prepared through flame thermal spraying, where a gas atomized alloy powder substituted an amorphous powder. The microstructure and thermal behavior of the laboratory-produced powders and the produced as-sprayed coating were characterized. The results demonstrate that the powder, which is spherical or ellipsoidal, is mainly composed of Nb<sub>2</sub>Ni<sub>21</sub>B<sub>6</sub> and (Ni,Fe)<sub>23</sub>B<sub>6</sub> crystalline phases, whereas the as-sprayed coating consists of a glassy structure and certain nanocrystalline phases. It is obtained through calculations that the <em>R</em><sub>c</sub> (critical cooling rate) of the powder and the as-sprayed coating for the amorphous phase formations is 6.01×10<sup>5</sup> and 4.56×10<sup>3</sup> K/s, respectively. The explanation for the amorphous structure, as it occurred in the as-sprayed coating, is the rapid quenching from the melt at the cooling rates which exceeds the critical cooling rate <em>R</em><sub>c</sub>. The as-sprayed amorphous coatings displays a low friction coefficient of 0.17 and excellent wear resistance.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 10","pages":"Pages 2986-2992"},"PeriodicalIF":0.6000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30222-4","citationCount":"0","resultStr":"{\"title\":\"Preparation and Properties of a New Cost-effective Amorphous Composite Coating\",\"authors\":\"Shang Junchao , Liang Xiubing , Chen Yongxiong , Xu Binshi , Cao Wei\",\"doi\":\"10.1016/S1875-5372(18)30222-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A NiFeBSiNb amorphous/nanocrystalline composite coating was prepared through flame thermal spraying, where a gas atomized alloy powder substituted an amorphous powder. The microstructure and thermal behavior of the laboratory-produced powders and the produced as-sprayed coating were characterized. The results demonstrate that the powder, which is spherical or ellipsoidal, is mainly composed of Nb<sub>2</sub>Ni<sub>21</sub>B<sub>6</sub> and (Ni,Fe)<sub>23</sub>B<sub>6</sub> crystalline phases, whereas the as-sprayed coating consists of a glassy structure and certain nanocrystalline phases. It is obtained through calculations that the <em>R</em><sub>c</sub> (critical cooling rate) of the powder and the as-sprayed coating for the amorphous phase formations is 6.01×10<sup>5</sup> and 4.56×10<sup>3</sup> K/s, respectively. The explanation for the amorphous structure, as it occurred in the as-sprayed coating, is the rapid quenching from the melt at the cooling rates which exceeds the critical cooling rate <em>R</em><sub>c</sub>. The as-sprayed amorphous coatings displays a low friction coefficient of 0.17 and excellent wear resistance.</p></div>\",\"PeriodicalId\":21056,\"journal\":{\"name\":\"稀有金属材料与工程\",\"volume\":\"47 10\",\"pages\":\"Pages 2986-2992\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2018-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30222-4\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"稀有金属材料与工程\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1875537218302224\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"稀有金属材料与工程","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1875537218302224","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Preparation and Properties of a New Cost-effective Amorphous Composite Coating
A NiFeBSiNb amorphous/nanocrystalline composite coating was prepared through flame thermal spraying, where a gas atomized alloy powder substituted an amorphous powder. The microstructure and thermal behavior of the laboratory-produced powders and the produced as-sprayed coating were characterized. The results demonstrate that the powder, which is spherical or ellipsoidal, is mainly composed of Nb2Ni21B6 and (Ni,Fe)23B6 crystalline phases, whereas the as-sprayed coating consists of a glassy structure and certain nanocrystalline phases. It is obtained through calculations that the Rc (critical cooling rate) of the powder and the as-sprayed coating for the amorphous phase formations is 6.01×105 and 4.56×103 K/s, respectively. The explanation for the amorphous structure, as it occurred in the as-sprayed coating, is the rapid quenching from the melt at the cooling rates which exceeds the critical cooling rate Rc. The as-sprayed amorphous coatings displays a low friction coefficient of 0.17 and excellent wear resistance.
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