Wang Jun, Z. Liying, G. Zhimeng, Lin Tao, Wu Chengyi, Wu Qinghua
{"title":"超细晶W-Ni-Fe重合金烧结收缩动力学","authors":"Wang Jun, Z. Liying, G. Zhimeng, Lin Tao, Wu Chengyi, Wu Qinghua","doi":"10.2497/JJSPM.50.912","DOIUrl":null,"url":null,"abstract":"The characteristics of swell-shrinkage kinetic curve during sintering the compact of W-Ni- Fe 10% with primary mean grain size less than 200 nm in hydrogen atmosphere was researched by high tem- perature dilatometer. And the effects of the average size of tungsten particle and green density on shrinkage commence temperature, sharp shrinkage temperature and shrinkage rate were also studied. It shows that shrink age commence temperature and sharp shrinkage temperature of the compact with ultrafine grain are 970℃ and 1240 ℃ respectively. The maximum shrinkage rate is 9 μm/℃. The shrinkage ratio decreases with the increase of green density and increases with the increase of sintering temperature.","PeriodicalId":17554,"journal":{"name":"Journal of University of Science and Technology Beijing","volume":"2673 1","pages":"107-110"},"PeriodicalIF":0.0000,"publicationDate":"2003-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Shrinkage Kinetics during Sintering W-Ni-Fe Heavy Alloy with Ultrafine Grain\",\"authors\":\"Wang Jun, Z. Liying, G. Zhimeng, Lin Tao, Wu Chengyi, Wu Qinghua\",\"doi\":\"10.2497/JJSPM.50.912\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The characteristics of swell-shrinkage kinetic curve during sintering the compact of W-Ni- Fe 10% with primary mean grain size less than 200 nm in hydrogen atmosphere was researched by high tem- perature dilatometer. And the effects of the average size of tungsten particle and green density on shrinkage commence temperature, sharp shrinkage temperature and shrinkage rate were also studied. It shows that shrink age commence temperature and sharp shrinkage temperature of the compact with ultrafine grain are 970℃ and 1240 ℃ respectively. The maximum shrinkage rate is 9 μm/℃. The shrinkage ratio decreases with the increase of green density and increases with the increase of sintering temperature.\",\"PeriodicalId\":17554,\"journal\":{\"name\":\"Journal of University of Science and Technology Beijing\",\"volume\":\"2673 1\",\"pages\":\"107-110\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-11-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of University of Science and Technology Beijing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2497/JJSPM.50.912\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of University of Science and Technology Beijing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2497/JJSPM.50.912","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Shrinkage Kinetics during Sintering W-Ni-Fe Heavy Alloy with Ultrafine Grain
The characteristics of swell-shrinkage kinetic curve during sintering the compact of W-Ni- Fe 10% with primary mean grain size less than 200 nm in hydrogen atmosphere was researched by high tem- perature dilatometer. And the effects of the average size of tungsten particle and green density on shrinkage commence temperature, sharp shrinkage temperature and shrinkage rate were also studied. It shows that shrink age commence temperature and sharp shrinkage temperature of the compact with ultrafine grain are 970℃ and 1240 ℃ respectively. The maximum shrinkage rate is 9 μm/℃. The shrinkage ratio decreases with the increase of green density and increases with the increase of sintering temperature.
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