|本期目录/Table of Contents|

[1]王岚,刘朋,王龙耀,等.多孔Ti的正压氛围烧结条件及其影响[J].南京工业大学学报(自然科学版),2013,35(02):30-35.[doi:10.3969/j.issn.1671-7627.2013.02.006]
 WANG Lan,LIU Peng,WANG Longyao,et al.Effects of preparation conditions on porous titanium sintering at positive pressure[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(02):30-35.[doi:10.3969/j.issn.1671-7627.2013.02.006]
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多孔Ti的正压氛围烧结条件及其影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年02期
页码:
30-35
栏目:
出版日期:
2013-03-20

文章信息/Info

Title:
Effects of preparation conditions on porous titanium sintering at positive pressure
文章编号:
1671-7627(2013)02-0030-06
作者:
王岚12刘朋2王龙耀2何明阳2邢卫红1徐南平1
1. 南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009; 2. 常州大学 石油化工学院 江苏省精细石油化工重点实验室,江苏 常州 213164
Author(s):
WANG Lan12LIU Peng2WANG Longyao2HE Mingyang2XING Weihong1XU Nanping1
1. State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China; 2. Jiangsu Key Laboratory of Fine Chemicals Technology,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China
关键词:
多孔Ti 粉末烧结 烧结氛围 正压
Keywords:
porous titanium powder metallurgy sintering atmosphere positive pressure
分类号:
TQ050.4
DOI:
10.3969/j.issn.1671-7627.2013.02.006
文献标志码:
A
摘要:
以高纯Ti粉为原料,在正压(<0.1 MPa,表压)高纯Ar保护下,对多孔Ti的制备条件进行研究。结果表明:Ti粉体中加入的黏结剂聚乙烯醇(PVA)和致孔剂NH4HCO3可通过300~350 ℃前期热处理除去; 体积收缩率随烧结温度的升高和保温时间的延长而增大,当烧结温度>1 000 ℃时,可得到微观形貌圆滑、具有较粗烧结颈的Ti材料; 在实验条件下保温时间从1 h延长至3 h,体积收缩率增加量可达10%; 多孔Ti的密度随成型压力的增大而增大,在成型压力>230 MPa时密度随压力变化渐趋平缓; 体积收缩率随成型压力的增大而降低,二者呈近线性关系,其中成型压力100 MPa时的试样体积收缩率可达27%; 实验制备的多孔Ti在测试中发生塑性屈服,屈服强度可达222.36 MPa,显示了较高的屈服强度和较好的抗压性能。
Abstract:
Using pure titanium powder as raw material,under the protection of the high-purity argon(less than 0.1 MPa,gauge),the preparation conditions of porous titanium were studied.The results showed that pdyrinyl alcohol(PVA)and NH4HCO3 could be removed by heat treatment at 300-350 ℃.The volume shrinkage increased with the increase of sintering temperature and holding time.The porous titanium with smooth morphology and coarse sintered neck could be prepared when the sintering temperature was more than 1 000 ℃.When prolonging the holding time from 1 h to 3 h,the increase of volume shrinkage rate was up to 10%.The density of porous titanium increased with the molding pressure increasing,and the density change with the pressure was becoming flat when the molding pressure was more than 230 MPa.The volume shrinkage rate of porous titanium decreased with the increase of the molding pressure,and the shape size decreased by 27% when the molding pressure was 100 MPa.The porous titanium showed higher yield strength and better compression performances in the test and the plastic yield strength was up to 222.36 MPa.

参考文献/References:

[1] 刘培生.多孔材料导论[M].北京:清华大学出版社,2004.
[2] Gao Z F,Li Q Y,He F,et al.Mechanical modulation and bioactive surface modification of porous Ti-10Mo alloy for bone implants[J].Materials & Design,2012,42(12):13-20.
[3] Wang Y Q,Tao J,Zhang J L,et al.Effects of addition of NH4HCO3 on pore characteristics and compressive properties of porous Ti-10% Mg composites[J].Transactions of Nonferrous Metals Society of China,2011,21(5):1074-1079.
[4] Sharma M,Gupta G K,Modi O P,et al.Titanium foam through powder metallurgy route using acicular urea particles as space holder[J].Materials Letters,2011,65(21/22):3199-3201.
[5] Li B Q,Yan F,Lu X.Effect of microstructure on the tensile property of porous Ti produced by powder metallurgy technique[J].Materials Science and Engineering:A,2012,534(2):43-52.
[6] 邹黎明,杨超,李元元.粉末冶金法制备Ti基生物医学材料的研究进展[J].材料导报,2011,25(15):82-85.
[7] 牛文娟,白晨光,邱贵宝,等.泡沫Ti及其合金制备方法研究进展[J].粉末冶金技术,2009,27(4):302-304.
[8] Ryan G E,Pandit A S,Apatsidis D P.Porous titanium scaffolds fabricated using a rapid prototyping and powder metallurgy technique[J].Biomaterials,2008,29(27):3625-3635.
[9] Li B Y,Rong L J,Li Y Y,et al.A recent development in producing porous Ni-Ti shape memory alloys[J].Intermetallics,2000,8(8):881-884.
[10] Ibrahim A,Zhang F M,Otterstein E,et al.Processing of porous Ti and Ti5Mn foams by spark plasma sintering[J].Materials & Design,2011,32(1):146-153.
[11] Fukuda A,Takemoto M,Saito T,et al.Osteoinduction of porous Ti implants with a channel structure fabricated by selective laser melting[J].Acta Biomaterialia,2011,7(5):2327-2336.
[12] 谢成木,莫畏,李四清.Ti近净成型工艺[M].北京:冶金工业出版社,2009.
[13] 奚正平,汤慧萍.烧结金属多孔材料[M].北京:冶金工业出版社,2009.

备注/Memo

备注/Memo:
收稿日期:2012-07-06
基金项目:江苏高校优势学科建设工程项目
作者简介:王岚(1976—),女,江苏无锡人,博士生,讲师,主要研究方向为膜分离,E-mail: wanglan@cczu.edu.cn..
更新日期/Last Update: 2013-03-31