B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, N. I. Abzalov
{"title":"Patterns of Synthesis of TiC–NiCr Cermets from Powder Mixtures: Influence of Nichrome Content and Titanium Particles Size","authors":"B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, N. I. Abzalov","doi":"10.3103/s1061386224010060","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The combustion patterns of powder mixtures (100 – <i>X</i>)(Ti + C) + <i>X</i>NiCr, <i>X</i> = 0–20%, and phase composition of synthesis products were studied. The different nature of the dependence of the burning velocity on the nichrome content for blends containing titanium powders with particles of characteristic sizes of 60 and 120 μm was explained within the framework of the convective–conductive model by the retarding influence of impurity gases released ahead of the combustion front. The conditions for warming up Ti particles before the front were not met for mixtures of fine and coarse titanium powders. XRD spectra of combustion products showed the necessity of using fine titanium powder to obtain cermets without side phases of intermetallic compounds.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Self-Propagating High-Temperature Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s1061386224010060","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 combustion patterns of powder mixtures (100 – X)(Ti + C) + XNiCr, X = 0–20%, and phase composition of synthesis products were studied. The different nature of the dependence of the burning velocity on the nichrome content for blends containing titanium powders with particles of characteristic sizes of 60 and 120 μm was explained within the framework of the convective–conductive model by the retarding influence of impurity gases released ahead of the combustion front. The conditions for warming up Ti particles before the front were not met for mixtures of fine and coarse titanium powders. XRD spectra of combustion products showed the necessity of using fine titanium powder to obtain cermets without side phases of intermetallic compounds.
期刊介绍：
International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
