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Effect of powder feeding rate on in Situ synthesis of HA/Ti composite coating

  • Northwestern Polytechnical University Xian

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In situ laser cladding is a novel way to fabricate hydroxyapatite(HA) coating on Ti substrate using mixed powders of CaCO3 and CaHPO 4. Powder feeding rate is one of the major parameters that influence laser cladding, so its effect on fabrication process and microstructure of the coating was studied. During fabrication process, the temperature of the laser melt pool will increase with the powder feeding rate since the laser absorption rate of the mixed powders is higher than that of Ti. It is also found that the mixed powders and Ti substrate will react with each other and form a transitional zone between the bioceramic coating and the Ti substrat. Meanwhile, the size and number of the pores in the coating increase with the powder feeding rate. And the coating will become loosen when the powder feeding rate is too high, which will make the bioceramic coating become brittle and degrade the mechanical properties of the coating.

源语言英语
主期刊名Ti 2011 - Proceedings of the 12th World Conference on Titanium
2150-2152
页数3
出版状态已出版 - 2012
活动12th World Conference on Titanium, Ti 2011 - Beijing, 中国
期限: 19 6月 201124 6月 2011

出版系列

姓名Ti 2011 - Proceedings of the 12th World Conference on Titanium
3

会议

会议12th World Conference on Titanium, Ti 2011
国家/地区中国
Beijing
时期19/06/1124/06/11

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