Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 5321 dokumen yang sesuai dengan query
cover
"Magnesium (Mg) alloys are receiving increasing attention due to their abundance, light weight, castability, formability, mechanical properties and corrosion performance. By selecting the appropriate combination of materials, coatings and surface modifications, their corrosion resistance can be greatly enhanced. Corrosion prevention of magnesium alloys is a comprehensive guide to the effective prevention of corrosion in these important light metals.
Part one discusses alloying, inhibition and prevention strategies for magnesium alloys as well as corrosion and prevention principles. Part two reviews surface treatment and conversion. Beginning with an overview of surface cleaning and pre-conditioning, the book goes on to discuss the use of surface processing and alloying, laser treatments, chemical conversion and electrochemical anodization to improve the corrosion resistance of magnesium alloys. Coatings are then the focus of part three, including varied plating techniques, cold spray coatings, gel and electroless electrophoresis coatings. Finally, the book concludes in part four with a selection of case studies investigating the application of preventative techniques for both automotive and medical applications."
Cambridge, UK: Woodhead, 2013
e20426907
eBooks  Universitas Indonesia Library
cover
"Designed for use by practicing engineers, and maintenance and operating personnel, who are concerned with the problem of corrosion of aluminum in their daily job functions. DLC: Aluminum--Corrosion."
Materials Park, OH: ASM International, 1999
e20442127
eBooks  Universitas Indonesia Library
cover
Jones, Denny A.
Upper Saddle River, NJ: Prentice-Hall, 1996
620.112 23 JON p
Buku Teks  Universitas Indonesia Library
cover
Balalaev, G. A.
Moscow: MIR Publishers, 1972
620.112 23 BAL c (1)
Buku Teks  Universitas Indonesia Library
cover
Texas: National Associates of Corrosion Engineers, 1979
620.112 COR
Buku Teks  Universitas Indonesia Library
cover
Sri Lubriandini Putri
"Magnesium alloy dapat digunakan sebagai implan biodegradable yang bersifat sementara untuk implan tulang dan vascular stents karena memiliki sifat biocompatible dan biodegradable. Tingkat kekakuan yang dimiliki oleh magnesium alloy juga dekat dengan tulang sehingga dapat mengurangi stress-shielding effect. Namun, magnesium alloy memiliki ketahanan korosi yang buruk apabila terkena kondisi lingkungan yang korosif sehingga akan menghasilkan laju korosi yang tinggi dan degradasi yang cepat sehingga akan menyebabkan kegagalan awal pada implan. Masalah tersebut dapat ditingkatkan dengan teknik pemrosesan yang tepat seperti perlakuan permukaan. Salah satu tekniknya adalah deposisi ZrO2 dan HA untuk meningkatkan ketahanan korosi implan magnesium alloy. Proses EPD dilakukan pada tegangan sel konstan 20 V selama 40 menit pada suhu kamar untuk masing-masing larutan ZrO2 dan HA. Hasil penelitian menunjukkan bahwa ketahanan korosi implan magnesium alloy yang dilapisi ZrO2 dan HA meningkat seiring meningkatnya kekerasan dan kekasaran implan magnesium alloy. Mikrostruktur permukaan pada ZK61 yang telah dilapisi oleh ZrO2 dan HA lebih seragam dan merata dibandingkan dengan mikrostuktur AZ31 yang telah dilapisi oleh material yang sama. Icorr optimum yang didapatkan pada ZK61 sebesar 3.02 μA/cm2 dengan laju korosi sebesar 0.15mm/year. Hasil ini juga menyebabkan penurunan laju degradasi magnesium implan setelah proses perendaman pada simulated body fluids

Magnesium Alloy can be used as temporary biodegradable implants such as bone implants and vascular stent due to its biocompatible and biodegradable properties. The level of stiffness possessed by magnesium alloys is also the closest to bone so that it can reduce the stress-shielding effect. However, Mg-alloy has poor corrosion resistance when exposed to severe conditions which will result in a high corrosion rate and rapid degradation will lead to the early failure of implant. Those issues can be enhanced by appropriate processing techniques such as surface treatment. One of the techniques is the deposition of ZrO2 and HA to enhance the corrosion resistance of magnesium implants. The electrophoretic deposition process conducted at a constant cell voltage of 20 V for 40 min at room temperature for each ZrO2 and HA. The results shows that the corrosion resistance of magnesium implant coated by ZrO2 and HA increase as hardness and the roughness of magnesium alloy implant increases. Microstructure of ZK61 surface after deposition shows that ZrO2 and HA successfully deposited and evenly distributed. ZrO2 and HA coated ZK61 exhibited significantly better corrosion resistance as compared to AZ31 with Icorr 3.02¼A/cm2 and corrosion rate 0.15mm/year, confirmed by the polarization test. This results also lead to the decreasing of degradation of magnesium implant after the immersion process on simulated body fluids."
Depok: Fakultas Teknik Universitas Indonesia, 2022
T-pdf
UI - Tesis Membership  Universitas Indonesia Library
cover
Park Ridge, N.J., U.S.A.: Noyes Data Corp., 1983
620.112 23 COR
Buku Teks  Universitas Indonesia Library
cover
Scully, J.C.
Oxford: Pergamon Press, 1975
620.1623 SCU f
Buku Teks  Universitas Indonesia Library
cover
Rozenfeld, I.L.
New York: McGraw-Hill, 1981
620.162 3 ROZ c
Buku Teks  Universitas Indonesia Library
cover
Fontana, Mars G.
New York : McGraw-Hill, 1986
620.1 FON c
Buku Teks  Universitas Indonesia Library
<<   1 2 3 4 5 6 7 8 9 10   >>