{"title":"非等温模式DSC技术研究玻态Se和二元Se98M2 (M=Ag, Cd, Zn)合金结晶动力学","authors":"C. Dohare, N. Mehta","doi":"10.4236/JCPT.2012.24025","DOIUrl":null,"url":null,"abstract":"The crystallization kinetics of glassy Se and binary Se98M2 (M=Ag, Cd, Zn) alloys have been studied at different heating rates (5, 10, 15, 20 Kmin-1) using Differential Scanning Calorimetric (DSC) technique. The crystallization temperature (Tc) is determined from exothermic peak obtained in DSC scans of present samples. The variation in peak crystallization temperature (Tc) with the heating rate (β) has been used to investigate the growth kinetics using Kissinger, Augis-Bennet and Matusita-Sakka models. The activation energy of crystallization (Ec) has been found to increase with Ag additive and to decrease with Zn and Cd additive. The value of various kinetic parameters such as rate constant (Kp), Avrami index (n), thermal stability (S) and Hruby number (Hr) have been calculated under non-isothermal mode. The maximum change in different kinetic parameters has been found after the incorporation of Ag additive.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"02 1","pages":"167-174"},"PeriodicalIF":0.0000,"publicationDate":"2012-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":"{\"title\":\"Investigation of Crystallization Kinetics in Glassy Se and Binary Se98M2 (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode\",\"authors\":\"C. Dohare, N. Mehta\",\"doi\":\"10.4236/JCPT.2012.24025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The crystallization kinetics of glassy Se and binary Se98M2 (M=Ag, Cd, Zn) alloys have been studied at different heating rates (5, 10, 15, 20 Kmin-1) using Differential Scanning Calorimetric (DSC) technique. The crystallization temperature (Tc) is determined from exothermic peak obtained in DSC scans of present samples. The variation in peak crystallization temperature (Tc) with the heating rate (β) has been used to investigate the growth kinetics using Kissinger, Augis-Bennet and Matusita-Sakka models. The activation energy of crystallization (Ec) has been found to increase with Ag additive and to decrease with Zn and Cd additive. The value of various kinetic parameters such as rate constant (Kp), Avrami index (n), thermal stability (S) and Hruby number (Hr) have been calculated under non-isothermal mode. The maximum change in different kinetic parameters has been found after the incorporation of Ag additive.\",\"PeriodicalId\":64440,\"journal\":{\"name\":\"结晶过程及技术期刊(英文)\",\"volume\":\"02 1\",\"pages\":\"167-174\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-10-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"结晶过程及技术期刊(英文)\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://doi.org/10.4236/JCPT.2012.24025\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"结晶过程及技术期刊(英文)","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.4236/JCPT.2012.24025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
摘要
采用差示扫描量热(DSC)技术研究了玻璃态Se和二元Se98M2 (M=Ag, Cd, Zn)合金在不同升温速率(5、10、15、20 km -1)下的结晶动力学。结晶温度(Tc)由样品的DSC扫描得到的放热峰确定。采用Kissinger、Augis-Bennet和Matusita-Sakka模型研究了结晶峰温度(Tc)随升温速率(β)的变化规律。发现银的加入增加了结晶活化能，锌和镉的加入降低了结晶活化能。在非等温模式下，计算了各种动力学参数如速率常数Kp、Avrami指数n、热稳定性S和Hruby数Hr的值。在加入银添加剂后，各动力学参数的变化最大。
Investigation of Crystallization Kinetics in Glassy Se and Binary Se98M2 (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode
The crystallization kinetics of glassy Se and binary Se98M2 (M=Ag, Cd, Zn) alloys have been studied at different heating rates (5, 10, 15, 20 Kmin-1) using Differential Scanning Calorimetric (DSC) technique. The crystallization temperature (Tc) is determined from exothermic peak obtained in DSC scans of present samples. The variation in peak crystallization temperature (Tc) with the heating rate (β) has been used to investigate the growth kinetics using Kissinger, Augis-Bennet and Matusita-Sakka models. The activation energy of crystallization (Ec) has been found to increase with Ag additive and to decrease with Zn and Cd additive. The value of various kinetic parameters such as rate constant (Kp), Avrami index (n), thermal stability (S) and Hruby number (Hr) have been calculated under non-isothermal mode. The maximum change in different kinetic parameters has been found after the incorporation of Ag additive.
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