Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Materials for Mechanical Engineering》 2018-09
Add to Favorite Get Latest Update

Process and Property of TiO_2 Coating cBN Composite Powder Prepared by Sol-Gel Method

LIANG Lixing;WANG Hailong;LI Jian;HU Biyong;SHAO Gang;XU Hongliang;LU Hongxia;FAN Bingbing;ZHANG Rui;School of Materials Science and Engineering,Zhengzhou University;Zhengzhou University of Aeronautics;  
A layer of TiO_2 was coated on the surface of cubic boron nitride(cBN)particles by sol-gel method with anhydrous ethanol and water as dispersion medium and with tetrabutyl titanate as titanium source,and then cBN-TiO_2 composite powders were obtained.The effects of the molar ratio of anhydrous ethanol to butyl titanate and the molar ratio of cBN to butyl titanate on the coating effect were investigated.The preparation process was optimized.The oxidation resistance of cBN-TiO_2 composite powder under optimal process was studied.The results show that the surface of cBN particles was coated with a layer of dense TiO_2 uniformly when the molar ratio of anhydrous ethanol to butyl titanate was 10∶1 and the molar ratio of cubic boron nitride to butyl titanate was 1∶1,indicating the best coating effect.The initial oxidation temperature of cBN-TiO composite powder prepared under optimal process was 900 ℃,and was 220 ℃ higher than that of cBN micro powder before coating with TiO_2.
【Fund】: 河南省自然科学基金资助项目(162300410242);; 郑州大学优秀青年教师发展基金资助项目(1421320044)
【CateGory Index】: TB383.3
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved