The effect of powder processing on densification, microstructure and mechanical properties of hydroxyapatite
The influence of powder processing and sintering temperature on densification, microstructure and mechanical properties of hydroxyapatite (HAp) ceramics was studied. The as-dried, calcined and processed HAp powders were uniaxially compacted and sintered at various temperatures (1000–1400 °C) for 3 h...
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| Veröffentlicht in: | Ceramics international 2002, Vol.28 (4), p.355-362 |
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| creator | Thangamani, Nithyanantham Chinnakali, Kandasamy Gnanam, F.D |
| description | The influence of powder processing and sintering temperature on densification, microstructure and mechanical properties of hydroxyapatite (HAp) ceramics was studied. The as-dried, calcined and processed HAp powders were uniaxially compacted and sintered at various temperatures (1000–1400 °C) for 3 h. The as-dried and processed powders, attained 97% of theoretical density (TD) at 1100 °C; at higher sintering temperatures, the density of the as-dried powder compact was found to decrease. A uniform microstructure with fine grain size (2.3 μm) was observed for material obtained from processed powder, whereas exaggerated grain growth with closed pores were observed in as-dried and unprocessed powder compacts. The Vickers' hardness, fracture toughness and flexural strength of HAp were determined and a maximum value of 6.3 GPa and 0.88 MPam
1
2
and 60.3 MPa, respectively were obtained for processed compact. The processing of HAp has improved its densification, microstructure homogeneity and mechanical properties. |
| doi_str_mv | 10.1016/S0272-8842(01)00102-X |
| format | Article |
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1
2
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1
2
and 60.3 MPa, respectively were obtained for processed compact. The processing of HAp has improved its densification, microstructure homogeneity and mechanical properties.</description><subject>A. Sintering</subject><subject>Applied sciences</subject><subject>Biological and medical sciences</subject><subject>Building materials. Ceramics. Glasses</subject><subject>C. Mechanical properties</subject><subject>Ceramic industries</subject><subject>Chemical industry and chemicals</subject><subject>D. Apatite</subject><subject>E. Biomedical applications</subject><subject>Exact sciences and technology</subject><subject>Medical sciences</subject><subject>Miscellaneous</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Technical ceramics</subject><subject>Technology. Biomaterials. Equipments</subject><issn>0272-8842</issn><issn>1873-3956</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LxDAURYMoOH78BCEbRcFq0kzbdCUy-AWCCxXchTR5cSKdpCatOv_e1Bl06Spvce57uQehA0rOKKHl-SPJqzzjfJofE3pCCCV59rKBJpRXLGN1UW6iyS-yjXZifEtQWU_JBLVPc8BgDKgee4M7_6kh4C54BTFa94q9wxpctMYq2VvvTvHCquBjHwbVDwGwdBovQM2lS0Q7RjsIvYU47psvdfBfS9mlbA97aMvINsL--t1Fz9dXT7Pb7P7h5m52eZ8pVvI-k5Q0vJINa6Aucw6lVNU0TcqQXOsaStZQWpjGGK4NNIXiQClhkkotG17nbBcdrfamz7wPEHuxsFFB20oHfogirxJfFCyBxQocG8UARnTBLmRYCkrE6Fb8uBWjOEGo-HErXlLucH1AxlTaBOmUjX9hVhZVQUjiLlYcpLYfFoKIyoJToG1IxoX29p9L39kEkYM</recordid><startdate>2002</startdate><enddate>2002</enddate><creator>Thangamani, Nithyanantham</creator><creator>Chinnakali, Kandasamy</creator><creator>Gnanam, F.D</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>2002</creationdate><title>The effect of powder processing on densification, microstructure and mechanical properties of hydroxyapatite</title><author>Thangamani, Nithyanantham ; Chinnakali, Kandasamy ; Gnanam, F.D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-a10b87ab3be9628e6ac74962cf02dd9e63b115fbff8dfeb5c8e1103a1adab8923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>A. Sintering</topic><topic>Applied sciences</topic><topic>Biological and medical sciences</topic><topic>Building materials. Ceramics. Glasses</topic><topic>C. Mechanical properties</topic><topic>Ceramic industries</topic><topic>Chemical industry and chemicals</topic><topic>D. Apatite</topic><topic>E. Biomedical applications</topic><topic>Exact sciences and technology</topic><topic>Medical sciences</topic><topic>Miscellaneous</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Technical ceramics</topic><topic>Technology. Biomaterials. Equipments</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thangamani, Nithyanantham</creatorcontrib><creatorcontrib>Chinnakali, Kandasamy</creatorcontrib><creatorcontrib>Gnanam, F.D</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Ceramics international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Thangamani, Nithyanantham</au><au>Chinnakali, Kandasamy</au><au>Gnanam, F.D</au><au>WCA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of powder processing on densification, microstructure and mechanical properties of hydroxyapatite</atitle><jtitle>Ceramics international</jtitle><date>2002</date><risdate>2002</risdate><volume>28</volume><issue>4</issue><spage>355</spage><epage>362</epage><pages>355-362</pages><issn>0272-8842</issn><eissn>1873-3956</eissn><abstract>The influence of powder processing and sintering temperature on densification, microstructure and mechanical properties of hydroxyapatite (HAp) ceramics was studied. The as-dried, calcined and processed HAp powders were uniaxially compacted and sintered at various temperatures (1000–1400 °C) for 3 h. The as-dried and processed powders, attained 97% of theoretical density (TD) at 1100 °C; at higher sintering temperatures, the density of the as-dried powder compact was found to decrease. A uniform microstructure with fine grain size (2.3 μm) was observed for material obtained from processed powder, whereas exaggerated grain growth with closed pores were observed in as-dried and unprocessed powder compacts. The Vickers' hardness, fracture toughness and flexural strength of HAp were determined and a maximum value of 6.3 GPa and 0.88 MPam
1
2
and 60.3 MPa, respectively were obtained for processed compact. The processing of HAp has improved its densification, microstructure homogeneity and mechanical properties.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/S0272-8842(01)00102-X</doi><tpages>8</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | A. Sintering Applied sciences Biological and medical sciences Building materials. Ceramics. Glasses C. Mechanical properties Ceramic industries Chemical industry and chemicals D. Apatite E. Biomedical applications Exact sciences and technology Medical sciences Miscellaneous Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Technical ceramics Technology. Biomaterials. Equipments |
| title | The effect of powder processing on densification, microstructure and mechanical properties of hydroxyapatite |
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