Research of Ultrafine Cemented Carbides for PCB Microdrills
The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction & carburization. The grain growth inhibitors of 0.4wt% Cr 3 C 2 and 0.4wt% VC were added into the composite powders to obtain advanced ultrafine hardmetals w...
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| Veröffentlicht in: | Journal of Wuhan University of Technology. Materials science edition 2021-04, Vol.36 (2), p.255-258 |
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| container_title | Journal of Wuhan University of Technology. Materials science edition |
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| creator | Zhang, Weifeng Li, Chunxia |
| description | The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction & carburization. The grain growth inhibitors of 0.4wt% Cr
3
C
2
and 0.4wt% VC were added into the composite powders to obtain advanced ultrafine hardmetals with minimal porosity, defects and discontinuous. The rod samples were formed by extrusion. They were sintered in cacuum with SIP treatment. The sintered rods were made into PCB microdrill samples after polishing. Mechanical properties(such as density, hardness, transverse rupture strenth(TRS), magnetic saturation induction and magnetic coercivity) of the sintered ultrafine cemented carbides were measured. The microstructures of them were investigated by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that the transverse rupture strength of the samples sintered in vacuum with sinterhip(SIP) treatment is more excellent. The grain size could be controlled in a range of 200–400 nm with the help of grain growth inhibitors. And the superfine grained materials have superior strength(3900 MPa) and high hardness(HRA = 93.3). These features are ideal for PCB microdrills. |
| doi_str_mv | 10.1007/s11595-021-2403-0 |
| format | Article |
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3
C
2
and 0.4wt% VC were added into the composite powders to obtain advanced ultrafine hardmetals with minimal porosity, defects and discontinuous. The rod samples were formed by extrusion. They were sintered in cacuum with SIP treatment. The sintered rods were made into PCB microdrill samples after polishing. Mechanical properties(such as density, hardness, transverse rupture strenth(TRS), magnetic saturation induction and magnetic coercivity) of the sintered ultrafine cemented carbides were measured. The microstructures of them were investigated by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that the transverse rupture strength of the samples sintered in vacuum with sinterhip(SIP) treatment is more excellent. The grain size could be controlled in a range of 200–400 nm with the help of grain growth inhibitors. And the superfine grained materials have superior strength(3900 MPa) and high hardness(HRA = 93.3). These features are ideal for PCB microdrills.</description><identifier>ISSN: 1000-2413</identifier><identifier>EISSN: 1993-0437</identifier><identifier>DOI: 10.1007/s11595-021-2403-0</identifier><language>eng</language><publisher>Wuhan: Wuhan University of Technology</publisher><subject>Advanced Materials ; Carburization (corrosion) ; Carburizing ; Cemented carbides ; Chemistry and Materials Science ; Chromium carbide ; Coercivity ; Creep rupture strength ; Crystal defects ; Electron microscopy ; Extrusion ; Grain growth ; Grain size ; Hardness ; Inhibitors ; Magnetic induction ; Magnetic properties ; Magnetic saturation ; Materials Science ; Mechanical properties ; Microdrills ; Microscopy ; Sintering (powder metallurgy) ; Thermal decomposition ; Ultrafines ; Vanadium carbide</subject><ispartof>Journal of Wuhan University of Technology. Materials science edition, 2021-04, Vol.36 (2), p.255-258</ispartof><rights>Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2021</rights><rights>Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-aced987415b5ae7b1e40f4e665fc0ee105cd395b37f2c4b8cea18d24d0f9a9ec3</citedby><cites>FETCH-LOGICAL-c316t-aced987415b5ae7b1e40f4e665fc0ee105cd395b37f2c4b8cea18d24d0f9a9ec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11595-021-2403-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11595-021-2403-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zhang, Weifeng</creatorcontrib><creatorcontrib>Li, Chunxia</creatorcontrib><title>Research of Ultrafine Cemented Carbides for PCB Microdrills</title><title>Journal of Wuhan University of Technology. Materials science edition</title><addtitle>J. Wuhan Univ. Technol.-Mat. Sci. Edit</addtitle><description>The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction & carburization. The grain growth inhibitors of 0.4wt% Cr
3
C
2
and 0.4wt% VC were added into the composite powders to obtain advanced ultrafine hardmetals with minimal porosity, defects and discontinuous. The rod samples were formed by extrusion. They were sintered in cacuum with SIP treatment. The sintered rods were made into PCB microdrill samples after polishing. Mechanical properties(such as density, hardness, transverse rupture strenth(TRS), magnetic saturation induction and magnetic coercivity) of the sintered ultrafine cemented carbides were measured. The microstructures of them were investigated by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that the transverse rupture strength of the samples sintered in vacuum with sinterhip(SIP) treatment is more excellent. The grain size could be controlled in a range of 200–400 nm with the help of grain growth inhibitors. And the superfine grained materials have superior strength(3900 MPa) and high hardness(HRA = 93.3). These features are ideal for PCB microdrills.</description><subject>Advanced Materials</subject><subject>Carburization (corrosion)</subject><subject>Carburizing</subject><subject>Cemented carbides</subject><subject>Chemistry and Materials Science</subject><subject>Chromium carbide</subject><subject>Coercivity</subject><subject>Creep rupture strength</subject><subject>Crystal defects</subject><subject>Electron microscopy</subject><subject>Extrusion</subject><subject>Grain growth</subject><subject>Grain size</subject><subject>Hardness</subject><subject>Inhibitors</subject><subject>Magnetic induction</subject><subject>Magnetic properties</subject><subject>Magnetic saturation</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Microdrills</subject><subject>Microscopy</subject><subject>Sintering (powder metallurgy)</subject><subject>Thermal decomposition</subject><subject>Ultrafines</subject><subject>Vanadium carbide</subject><issn>1000-2413</issn><issn>1993-0437</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kM1LxDAQxYMouK7-Ad4CnqszTdIPPGnxC1YUcc8hTSbapduuSffgf2-WFTx5mgfze2-Gx9g5wiUClFcRUdUqgxyzXILI4IDNsK6TkKI8TBoA0gbFMTuJcQWQoKKYses3imSC_eSj58t-CsZ3A_GG1jRM5HhjQts5ityPgb82t_y5s2F0oev7eMqOvOkjnf3OOVve3703j9ni5eGpuVlkVmAxZcaSq6tSomqVobJFkuAlFYXyFogQlHWiVq0ofW5lW1kyWLlcOvC1qcmKObvY527C-LWlOOnVuA1DOqlzpWRZKaiqROGeSv_FGMjrTejWJnxrBL3rSO870qkjvetIQ_Lke09M7PBB4S_5f9MP9AVoqQ</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Zhang, Weifeng</creator><creator>Li, Chunxia</creator><general>Wuhan University of Technology</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20210401</creationdate><title>Research of Ultrafine Cemented Carbides for PCB Microdrills</title><author>Zhang, Weifeng ; Li, Chunxia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-aced987415b5ae7b1e40f4e665fc0ee105cd395b37f2c4b8cea18d24d0f9a9ec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Advanced Materials</topic><topic>Carburization (corrosion)</topic><topic>Carburizing</topic><topic>Cemented carbides</topic><topic>Chemistry and Materials Science</topic><topic>Chromium carbide</topic><topic>Coercivity</topic><topic>Creep rupture strength</topic><topic>Crystal defects</topic><topic>Electron microscopy</topic><topic>Extrusion</topic><topic>Grain growth</topic><topic>Grain size</topic><topic>Hardness</topic><topic>Inhibitors</topic><topic>Magnetic induction</topic><topic>Magnetic properties</topic><topic>Magnetic saturation</topic><topic>Materials Science</topic><topic>Mechanical properties</topic><topic>Microdrills</topic><topic>Microscopy</topic><topic>Sintering (powder metallurgy)</topic><topic>Thermal decomposition</topic><topic>Ultrafines</topic><topic>Vanadium carbide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Weifeng</creatorcontrib><creatorcontrib>Li, Chunxia</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of Wuhan University of Technology. Materials science edition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Weifeng</au><au>Li, Chunxia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Research of Ultrafine Cemented Carbides for PCB Microdrills</atitle><jtitle>Journal of Wuhan University of Technology. Materials science edition</jtitle><stitle>J. Wuhan Univ. Technol.-Mat. Sci. Edit</stitle><date>2021-04-01</date><risdate>2021</risdate><volume>36</volume><issue>2</issue><spage>255</spage><epage>258</epage><pages>255-258</pages><issn>1000-2413</issn><eissn>1993-0437</eissn><abstract>The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction & carburization. The grain growth inhibitors of 0.4wt% Cr
3
C
2
and 0.4wt% VC were added into the composite powders to obtain advanced ultrafine hardmetals with minimal porosity, defects and discontinuous. The rod samples were formed by extrusion. They were sintered in cacuum with SIP treatment. The sintered rods were made into PCB microdrill samples after polishing. Mechanical properties(such as density, hardness, transverse rupture strenth(TRS), magnetic saturation induction and magnetic coercivity) of the sintered ultrafine cemented carbides were measured. The microstructures of them were investigated by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that the transverse rupture strength of the samples sintered in vacuum with sinterhip(SIP) treatment is more excellent. The grain size could be controlled in a range of 200–400 nm with the help of grain growth inhibitors. And the superfine grained materials have superior strength(3900 MPa) and high hardness(HRA = 93.3). These features are ideal for PCB microdrills.</abstract><cop>Wuhan</cop><pub>Wuhan University of Technology</pub><doi>10.1007/s11595-021-2403-0</doi><tpages>4</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals; Alma/SFX Local Collection |
| subjects | Advanced Materials Carburization (corrosion) Carburizing Cemented carbides Chemistry and Materials Science Chromium carbide Coercivity Creep rupture strength Crystal defects Electron microscopy Extrusion Grain growth Grain size Hardness Inhibitors Magnetic induction Magnetic properties Magnetic saturation Materials Science Mechanical properties Microdrills Microscopy Sintering (powder metallurgy) Thermal decomposition Ultrafines Vanadium carbide |
| title | Research of Ultrafine Cemented Carbides for PCB Microdrills |
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