?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STUDY+PERUBAHAN+FASA+ALUMINA+YANG+DIHASILKAN+DENGAN%0D%0AMETODE+ELEKTROKIMIA&rft.creator=Lidiya+Permata+Dewi%2C+1017041048&rft.subject=+&rft.description=Telah+dilakukan+penelitian+untuk+mempelajari+pengaruh+suhu+sintering+terhadap%0D%0Aperubahan+fasa+alumina+yang+dihasilkan+dengan+metode+elektrokimia.+Terkait%0D%0Adengan+pembuatannya%2C+penelitian+ini+bertujuan+untuk+mempelajari+pengaruh%0D%0Apotensial+dan+pH%2C+dengan+melakukan+percobaan+pada+pH+4+hingga+10%2C+dan%0D%0Apotensial+16+hingga+22+volt%2C+dengan+waktu+24+jam%2C+untuk+mendapatkan+kondisi%0D%0Adengan+jumlah+alumina+yang+paling+optimum.+Sampel+alumina+selanjutnya%0D%0Adisintering+pada+suhu+400%2C+800%2C+dan+1200+oC.+Hasil+yang+diperoleh%0D%0Amengindikasikan+bahwa+jumlah+alumina+yang+paling+banyak+dihasilkan+pada+pH+4%0D%0Adan+potensial+22+Volt.+Hasil+FTIR+menunjukkan+sampel+sebelum+disintering+dan%0D%0Ayang+disintering+pada+suhu+400+dan+800+oC+mengandung+gugus+O-H+dan+Al-O%2C%0D%0Asedangkan+sampel+yang+disintering+pada+suhu+1200+oC+hanya+terdiri+dari+gugus%0D%0AAl-O.+Hasil+XRD+mengindikasikan+bahwa+sampel+sebelum+sintering+terdiri+dari%0D%0A%CE%B2-Al(OH)3+dan+AlOOH.+Komposisi+sampel+ini+berubah+secara+bertahap+menjadi%0D%0A%CE%B3-Al2O3+dan+AlOOH+setelah+disintering+pada+suhu+400+oC%2C+kemudian+menjadi%0D%0Asempurna+%CE%B3-Al2O3+setelah+disintering+pada+suhu+800+oC+dan+menjadi+%CE%B1-Al2O3%0D%0Asetelah+disintering+pada+suhu+1200+oC.+Hasil+SEM+menunjukkan+bahwa+sampel%0D%0Aterdiri+dari+partikel+dengan+ukuran+dan+bentuk+yang+berbeda%2C+namun+semakin%0D%0Ahomogen+setelah+sampel+disintering+pada+suhu+1200+oC.+karakterisasi+dengan%0D%0AEDS+menunjukkan+bahwa+sampel+terdiri+dari+unsur+Al+dan+O%2C+yang+mendukung%0D%0Apembentukan+Al2O3.+Pengukuran+konduktivitas+termal+menunjukkan+bahwa%0D%0Asampel+merupakan+isolator+panas.%0D%0AKata+kunci%3A+Al2O3%2C+Metode+Elektrokimia%2C+FTIR%2C+XRD%2C+SEM%2FEDS.%0D%0A%0D%0AABSTRACT+BAHASA+INGGRIS%0D%0A%0D%0AThis+research+was+conducted+to+study+the+effect+of+sintering+temperatures+on+the%0D%0Aphase+transition+of+alumina+prepared+using+electrochemical+method.+Preparation%0D%0Aof+alumina+was+carried+out+at+different+potentials+and+pHs+and+constant+time+of+24%0D%0Ahours.+The+alumina+obtained+at+optimum+condition+was+subjected+to+sintering%0D%0Atreatment+at+different+temperatures+of+400%2C+800%2C+and+1200+%C2%B0C.+The+results+obtained%0D%0Aindicate+that+the+largest+quantity+of+alumina+was+produced+at+pH+4+and+potential+22%0D%0Avolt.+The+results+of+FTIR+showed+that+the+unsintered+and+those+sintered+at+400+and%0D%0A800+%C2%B0C+containing+OH+groups+and+Al-O%2C+whereas+the+samplesintered+at+1200+%C2%B0C%0D%0Aonly+consists+of+Al-O+groups.+The+results+of+XRD+indicate+that+the+unsintered%0D%0Asample+consists+of+%CE%B2-Al(OH)3+and+AlOOH.+The+composition+of+the+sample+was%0D%0Afound+to+change+gradually+into+%CE%B3-Al2O3+and+AlOOH+after+being+sintered+at%0D%0Atemperature+of+400+%C2%B0C%2C+then+completely+changed+into+%CE%B3-Al2O3+at+temperature+of%0D%0A800+%C2%B0C%2C+and+into+%CE%B1-Al2O3+at+1200+oC.+the+results+of+SEM+showed+that+the+samples%0D%0Aconsisted+of+particles+with+different+sizes+and+shapes%2C+and+the+sample+subjected+to%0D%0Asintering+tretament+at+1200+%C2%B0C+display+more+homogeneous+surface.%0D%0ACharacterization+by+EDS+showed+that+the+samples+consist+of+elements+Al+and+O%2C%0D%0Asupporting+the+formation+of+Al2O3.+Thermal+conductivity+measurements+indicate%0D%0Athat+the+samples+are+heat+insulators.%0D%0AKeywords%3A+Al2O3%2C+Electrochemical+Method%2C+FTIR%2C+XRD%2C+SEM%2FEDS.&rft.publisher=Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam&rft.date=2014-11-17&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F1%2FABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F2%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F4%2FCOVER.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F5%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F6%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F7%2FDAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F8%2FHALAMAN%2520PENGESAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F9%2FHALAMAN%2520PERSETUJUAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F10%2FKATA%2520PENGANTAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F11%2FMOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F12%2FPERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5837%2F13%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier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