Tạp chí Hóa học - Hội nghị khoa học và công nghệ hóa học cho phát triển bền vững

vrEN HAN l-Arr,r KHoA Hec vn cOruc NGHE vtET NAM VIETNAM ACADEMY OF SCIENCE AND TECHNOLOGY lssN 0866-7144 HQI NGHI KHOA HQC VA CoNG NGHE HOA HOC ^' a-- ,? ;.- 'CHO PHAT TRIEN BEN VUNG 5*255 2017 TAP CHI HOA HOC 55(581,2) 49-53 THANG 10 NAM 2OI7 nh hu&ng cria chdt di6n diy ph6t phat nh6m ch&a hqt nano Alzos d6nkhi ndng bio vQ ch6ng dn mdn trong m6i truong Nacl cfia loi ptr0 plasma Al2O3-TiOz "tral Thi Hdr", ph4m ttri l,yr, Nguy6n Vin Tu6nr, L0 Thu euy2 'ViQn Ki thudt nht€t doi, ViQn Hdn ldm KH&CN ViQt Nant tPhdng thi nghiQm trqng didm C6ng ngh( Hdn vd xri t], Ui mdt - Vi€n nghi€n ctru co khi D€n.Tda soqn l3-7-2017; Ch6p nhfn rldng 20-10-2017 Abstract In the present study, Al2O3-40 wt.yo TiO2 spraying technique. The coatings were sealed w and then heat treated at 400"C. The corrosion protective electrochemical measurements in combination with sc showed that the corrosion resistance of A12O3-40 wt.yo Ti nanoparticles is better than the coating sealed with alumin coating' Some interpretation and discussion about the experimental results were given. Keywords. Al2O3-TiO2 coatings, aluminum phosphate, plasma spraying, Al2O3 nanoparticles. 1. MO DAU Th6p cacbon ld loai vat fieu duoc sri dpng nhidu trong cdng nghiQp. Tuy nhi6n, th6p cacbon a6 ti en mdn vd mdi mdn khi ldm viQc trong m6i trudng khic nghiQt [1]. MQt trong nhirng phucmg phdp rlugc img dung rdng rii hiQn nay 116 b6o v6 th6p kh6i c6c t6i nhdn g6y 5n mdn vd mdi mdn ld sri dr,rng c6c l6p phun phtr nhi6t. Loai lorp phri clugc su dgng thucrng xuy€n tro.rg m6i hucrng ldm viOc kh6c nghi€t ld cilc lorp phri g5m oxit [2]. Trong tdt cit cdc_vgt liQu g6m, nh6m oxit (Alzor) dyoc tme dpng nhiOu trong ch6 tqo c6c lop phtr do chirng c6 ct6 cimg cao, tinh bAn h6a hgc, ch6ng en mdn vd mdi mdn t6t tll. C6c lorp phri Al2O3 chS.tao bing c6ng nghQ phun phir pl-asma c6 kh6 ndng hoat <lQng du6i cdc didu kiQn lfidc nghiQt nhu tii trgng cao, tdc dd cao, nhiet d0 cao, m6i truong mdi mdn vd m6i trucrng bi€n. Eac tinh cria lop phir Al2O3 c6 th6 tlugc ndng cao khi gia cuong th6m TiO2 vdo Jtgog loe phir [3, a]. Nhirng nbm g-dn <16y, khd ndngbrio vQ chpng dn mdn cria lop phir Al2O3-TiO2 clang duoc nhi6u nhd khoa hoc trOn th6 gi6i quan tdm nghiOn cuu [5-1 1]. _ Bdi b6o ndy sE t4nh bity c6c k6t qurh nghi€n cr?u khd ndng b6o vQ ch5ng dn mdn cria l6p pir,i etrOr- 40 oATiOz ch6 tpo bing phucrng ph4p phun phri plasma k6t hgp v6i chAt di6n dAy ph6t ph6t nh6m chira hat nano Al2O3 trong mdi trucrng NaCl 3,5 %. 2.TWJC NGHIEM 2.l.IJl6a chfit H6a ch6t chinh tluoc su dung trong nghiOn ciru gdm: bQt NiCr kich thu6c kh&ng iS * 45 pm(Trung Qu6c), bot Al2q-40%Ti62 kich thu6c kho6ng 15+45 pm (Trung eu6c), b6t o- A12O3 kich thudc khodng 150 nm eII), axit ph6phoric H3pOa 85% (Dirc), bdt nh6m hytlroxit A(OH)3 (Dric), ndn th6p CT3. 2.2.Phuong phfp chufn b! miu .Dung dich ph5t ph6t nh6m ducy. c didu chti tu axitphdtphoric (H3POa, 85%) ph6n img v6i nh6m 49 TCHH, 55(58I,2),2017 hydroxit AI(OH)3 d4ng bQt, ti l€ mol P/Al:3,0. Hda !a.n bot nh6m hydroxyt trong axit.phdtphoric tr€nb6p gia nhiQt c6 khuAy tu, tdng dAn nhiQt d0 d6n dich. Phsm Thi Hdvd cQng sq dua ra tr0n:hinh 1 trong thi€t bi Ld nung Nabertherm (Dtic) tai Vi6n K! thuflt nhiOt r16i - ViQn Hdn l6m Khoa hoc .vd c6ng nghQViQt Nam. Kjr hiQu m6u lorp phri tlugc trinh Qdy trongbitng2. 0246810 Thbi gian, giir . Hinh I: BiCu dd xri li nhi6t Bdng 2: K! hiQu mAU 2.3. Phuong phfp nghi-0n criu Kl6 rldng b69 vQ ch6ng dn mdn cria lorp p.hir Al2O3- 40 %TiO2 duoc nghiOn criu trong m6i trucrng NaCl 3,5 o . C5c m6u thi nghi0m 6n mdn duoc ngAm li6n tgc trong 504 h. C5c ph6p <1o iliQn h6a rluoc thuc hi6n tr6n thi6t bi do di6n h6a AUTOLAB PGSTAT 302N tai Vi0n Khoa hqc VQt li6u - Vi6n Hdn ldm Khoa hgc,vd cdng nghQ ViQt Nam v6i h0 tlo ba cti6n cuc: diQn clrc d5i ld t5m platin, di€n cpc so s6nh ld inh clo dugc thr,r 9. PhO t6ng trd a+102 Hz v6i 10 bi6n dQ dao dQng th6 ld 5 mV. , CAu truc m{t cit ngang.cria c6c m6u trudc vd sau k$i ngAm trong dung dichNaCll3 ,5%o.duocphAn tich bdng kinh hi6n vi diQn tu qu6t (SEM),trOn thi6t bi JEOL JMS-6490. 3. KET QUA VA THAO LUAN 3.1. Qu6t ttulng cong phin crSc "iBi0u d6 E"oo - t (hinh 1) cho thAy c6c m6u lop phir AT-P0 vd AT-P5 sau.504 h ngdm c6 E"o,' bi6n d6i thee x c6 gi6 tri ducnrg tlt cd cdc thdi .li m6u AT- P0 vd AT-P5 sau 504 h ngim, dung dfch NaCl c6 Bang l: ChC d0 c6ng ngh6 phun plasma STT Chti dQ phun Th6ng s6 cdng nghd Lcrp l6tNiCr Lorp pht Al2O 3-40%0 TiO z Cuong dQ ddng diQn (A) 380 550 z Dien thc (V) 24 .,4 a Luu lugng khi Ar (litlphrit)., 50 '60 4 Luu lugng'khi H, QiVphriQ 8 8 5 Khodng c6ch phun (mm): 100 100 6 Tdc d0 cdp bQt (g/phft) 30 50 STT Loai m6u Ki hi-6u ph6t ph6t AT- T 2 Lop phn c6 ph6t ph6t nh6m, 0% hat nano Al2O3, c6 xtr 1i nhiQt AT-PO 3 Lorp phri c6 phdt ph6t nh6m, 5% h4t nano Al2O3, c6 xir li nhi6t AT-P5 50 TCHH, 55(5E1,2),2017 su c6 m{t cria hat nano trong dung dfch ptrOt pnat nh6m dd g6p phAn chn trb d6ng k6 qua trintr tirAm Anh huong ctia chtit diin dity.,. thAu cira dung dich den bC mdt ndn th6p r16ng thoi chn trt qu6 trinh khu€ch t6n c6c sdn phAm [n mdn tu l6p p4i, vdo trong dung dich, ldm t.dng kh6 n6ng b6o vQ ch6ng dn mdn cria lcrp phn. D6i v6i m6u AT-t, trong giai clo4n dAu fi 6 h ddn 48 h ng6m mdu, mai rIQ ddng 5n mdn tdng manh tu 3,2x10-6 A/cm2 d6n 2,3x10-s Alcmz vd c6 xu hu6ng gi6m dAn drin m6c 744hngdmm6u. Sau d6, m0t d0 ddng in mdn c6 xu thAu grla dung"dich vdo trong lcrp phir do cl6 t6c d6 44 .h, mdt dQ ddng dn mdn c6 xu th6 do dung dich dd thAm th6u , gdy la dn mdn e6i vOi nOn th6p. 2 5rl0{ 2.0xr0r 4.20 {.25 uj 430 o Q {.35 LL 11.40 o fi -o.rs 450 . 1.5x10{ o !. 1:0x10' oIa 5.0x10{ | 20a 300 400 500 Thoi gian, gio Hinh l: Bi6n thi6n cria cli€n thiS dn mdn E"o. , theo thoi gian t 3.2. Ph6 t6ng tr0 tliQn h6a r 0 too 200 300 ,t00 500 600 7OO Hinh 2: Bit5n thi6n cira mdt dQ ddng dn mdn J"o, ,, . theo thdi gian t g cria c5c m6u lop phri pn tr€n Hinh 4. So s6nh 6c miu lop phn tru6c vd h trong dung dich NaCl 3,5% ta AT-T, sau,khi ng6m trong dung 6i gita lorp phri vd n6n th6p c6 s,r 5l TCHH, 55(58I,2),20t7 t6ch biQt. Otii voi mdu lorp Phqm Thi Hdvd cQng sq phri vi ndn th6p c6 sg b6c tdch nhi6u hon so v6i'AT-P0, ranh gioi gita AT-P5 { /'( 100000 80000 60000 EE o :- ,l000ll'N AT-PO E o .N I 0 m00 '0000 00000 /tormt dxt00 10m00 IIinh 3: Gien dd Nyquist cria c6c lop phri Abq-4}%TiO2theo thdi gian Hinh 4: Anh c6u tnic mdt cEtngang ciuaclcmdu lorp phtr tru6c vd sau khi ngdm hong dung dich NaCl 3,5% <o 0I) o HF b0 o\q(n vco n(J 'do Z H- 'l() slEjbo a= s00 2to 200 52 TCHH, 55(581,2),2017 tr€n. O:' LUAN qu6t. Loi cim on. C6ng trinh ndy daqc hd tuq kinh phi nghi€n cthu tb Qui di tdi tA ciip ViQn Ki thuQt nhiQt ddi - ViQn Hdn ldm Khoa hoc vd C6ng nghQ ViQt Nam. TAI LIEU THAM KHAO 1. S. Sathish, M. Geetha. Comparative study on corrosion behavior of plasma sprayed Al2Oj, ZrO2, Al2Oy'ZrO2 and ZrO2/Al2O j coatings, Trans. Nonferrous Met. Soc. China, 26,1336-1344 (2016). 2. N. Hegazy, M. Shoeib, Sh. Abdel-Samea, H.Abdel- Kader. Effect of Plasma Sprayed Alumina Coating on Corrosion Resistance, 13ft International Conference on AEROSPACE SCIENCES & AVIATION TECHNOLOGY (2009). 4. 5. 7 8 9. t0. ll. Anh hudng da chdt di6n ddy... S. Islak, S. Buytoz, E. Ersoz, N. Orhan, J. Stokes, M. Saleem Hashmi, I. Somunkiran, N. Tosun. Effect on microstructure of TiO2 rate in Al2OrTiO2 composite coating produced using plasma spray method, Optoelectronics and Advanced Materials - Rapid communications, 6, 844 -849 (2012). M. J. Ghazali, S. M. Forghani, N. Hassanuddin, A. Muchtar, A. R. Daud.. Comparative wear study of plasma sprayed TiO2 and Al2O3.TiO2 on mild steels. Tribology Intemational, 93, 68 1 -686 (2016). Titan W, Wang Y, Zhang T, Yang Y. Sliding wear and electrochemical corrosion behavior of plasma sprayed nanocomposite Al2Oyl3o%TiO2 coatings, Materials Chemistry and Physics, ll8i(l), 3j-45 (200e). Toma F L, Stahr C C, Berger L M, Saaro S, Herrmann M, Deska D, Michael G. Corrosion resistance of APS- and HVOF-sprayed coatings in the AlzOrTiO2 system, Journal of Thermal Spray Technology, l9(l-2), 137 -147 (20 I 0). J. Zhang, J. He, Y. rDong, X. Li, D. yan. Microstructure and properties of Al2Oj-I3o% TiO2 coatings sprayed using nanostructured powders, Rare Metals, 26,391-39'l (2007). S. JIA, Y.Zou, J. Xu, J. W*g, L. Yu. Effect of TiO2 content on properties of Al2Oj thermal barrier coatings by plasma spraying, Transactions of Nonferrous Metals Society of China, 25, 175-183 (201s). K. B. Ghavidel. The effect ofpla on the cavitation erision ifAlz Surface and Coatings Technology, 205, I 850-1855 (2010). F. Vargas, H. Ageorges, P. Fauchais, M.E. L6pez, J.A. Calderon. Permeation of saline solution in Al2O j-I3wt.o% TiO2 coatings elaborated by atmospheric plasma spraying, Surface and Coatings Technology, 220, 85-89 (2013). N. H. N. Yusoff M. J. Ghazali, M.C. Isa, A.R. Daud, A. Muchtar. Effects of powder size and metallic bonding layer on corrosion behaviour of plasma- sprayed Al2O3-13% TiO2 coated mild steel in fresh tropical seaweter, Ceramics Intemational , 39, 2527- 2s33 (2013). Li€n h€: Phgm Thi Hd ViQn K! thuft nhiQt ddi ViQn Hdn ldm Khoa hoc vdC6ng-nghQ ViQt Nam 56 18, Hoang eu6c ViQt, Ciu Gi6y, Hd NOi E-mail : hapham2O5 @gmail. com; DiQn thoai : 0963 6 29 033. 53 HAp phlr ion Mn(II) trong mdi trucrng nu6c su dpng vft li6u graphite hoat h6a KoH. Adsorption of Mn(II) from aqueous solution by graphite modified KOH. Hd Xudn Son, Dd Trd Huong, Trdn Thi Nhu, Dfing Vdn Thdnh t0 Anh huong cta ch6t diCn dAy phOt phat nhdm chua hat nano AlzOr d6n kh6 n6ng b6o r-d chdng 6n mdn trong mdi trudng NaCl cira lop phir plasma Al2O3-TiO2. 11 Effects of aluminum phosphate sealant containing Al2O3 nanoparticles on the corrosir: protective resistance ability of the Al2O3-TiO2 plasma sprayed coating in NaCl media. Phsm Thi Hd, Pham fhi Li, Nguydn Vdn Tuiin, L€ Tttu O,-. H6p phr,r cd(ID trong mdi trudng nu6c su dpng vgt liQu h6p phr,r b6 chd bi6n tinh KoH. Adsorption of Cd(II) from aqueous solution using KOH-modified waste tea residue. B6 rra Huong, Nguydn Qu6c Dilng, NguySn Thi Kim Ngdn, Nguydn Thi /nh Try-er. Hd Xudn Linh Nghidn cuu h6p php As(III) tu dung dlch bing vdt lieu nano CeO2. Study on adsorption of As(III) from aqueous solution by nanomaterial ceoz. Ddo H6ng Duc, Ddo Ngoc Nhi€m, Nguydn euang Biic, Dd euang Trung Trung hqp gh6p quang h6a 1-vinyl-2-pyrolidinone bi6n tinh be mdt mdng lgc polyetesulfon. Photochemical grafting polymerization of 1-vinyl-2-pyrolidinone to modify polyethersulfone membrane surface. Nguy1n Thi Minh Chdu, Ng6 H6ng Anh Thu, Trin Th! Dung 14 Tdng hop, tldc tnmg vAt li6u MnOz/SBA-I5 v6i ngudn silic tu tro tr6u bing phuong ph6p ktit tua ho6 hoc. Synthesis, characterization of MnO2/SBA-15 material with silica source from rice husk ash by chemical precipitation method. Hodng Vdn D*c 15 Vat h0u xric t6c PtCu/VC cho phin img anot vd catot trong pin nhi€n lidu. PtCu/VC catalysts for anode and cathode reactions in fuel cell. Vil Thi H6ng Phuqng, Trdn Vdn-Mdn, L€ Mi Loan phqtng 16 Nghi6n cr?u xtr lf bC mat vdt 1i6u nh6m hqp kim 6061 bing phuong ph6p oxi h6a itiQn ly ]. plasma. Surface treatment of 6061 aluminum alloy by plasma electrolytic oxidation method. od cnt tntt, Phqm Thi san, Nguydn Ngqc phong, Ng6 Thi Anh ruy€t, pham Hing Hanh 17 Tdng hqp nanocompozit tt tinh khSng kfiu6n s6t tulbac tr€n ndn chitosan su dgng dung dfch 8-i tdy gi cua nhd m6y th6p. Synthesis of magnetic antibacterial nanocomposite Fe3Oa/Ag-chitosan using spent pickling liquors. Vil Xudn Minh, L€ Bdo Thoa, LO Trqng Lu, Pham Hong Nam, Le Thi Mai Haong, Hodng Vdn Hilng, Nguydn Tudn Dung 18 Nghi6n cr?u khd ndng xu lj'phAm mdru rhodamine B tr6n xirc t6c TiO2/hydromagnesite. 89 Removal treatment of Rhodamine B Dye aqueous solution over TiO2-ftrydromagnesite catalysts. Nguydn fii rLyin, Han Thi Phuong Nga, Nguydn Ti€n Thdo 19 20 2l 22 22 ,\l 2 I2 13